Electronic component

Abstract

To provide an electronic component which suppresses occurrence of migration even in a configuration where an external electrode includes a conductive resin layer.SOLUTION: An internal electrode 7 is electrically connected to an external electrode 5. An auxiliary internal electrode 11 is arranged in the same layer as the internal electrode 7, and is electrically connected to the external electrode 5 to which the internal electrode 7 is not electrically connected. The external electrode 5 includes a second electrode layer E2 positioned on a main surface 3a. The auxiliary internal electrode 11 includes: an electrode part 11a which is exposed to a corresponding end face 3e in a pair of end faces 3e, and is electrically and physically connected to the external electrode 5 to which the internal electrode 7 is not electrically connected; and an electrode part 11b positioned between the second electrode layer E2 included in the external electrode 5 to which the internal electrode 7 is not electrically connected and the internal electrode 7.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to electronic components. [Background technology]

[0002] A known electronic component includes a rectangular parallelepiped element body, a plurality of external electrodes, and a plurality of internal electrodes (see, for example, Patent Document 1). The element body includes a first main surface constituting a mounting surface, a second main surface opposing the first main surface in the first direction, a pair of end faces opposing each other in the second direction, and a pair of side faces opposing each other in a third direction. The multiple external electrodes are respectively arranged on both ends of the element body in the second direction. The multiple internal electrodes are arranged side by side in the third direction within the element body, and are electrically connected to corresponding external electrodes among the multiple external electrodes. The external electrodes include a conductive resin layer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-006501 A Summary of the Invention [Problem to be solved by the invention]

[0004] The conductive resin layer generally contains a plurality of metal particles and a resin. In this case, migration may occur in the external electrodes. Migration is considered to occur, for example, due to the following phenomena. The electric field acts on the metal particles contained in the conductive resin layer, ionizing the metal particles. The generated metal ions are attracted to the electric field generated between the external electrodes and migrate from the conductive resin layer. The electric field acting on the metal particles includes, for example, the electric field generated between the external electrode and the internal electrode. The metal ions that migrate from the conductive resin layer react with electrons supplied from, for example, the internal electrode or the external electrode, and are precipitated as Ag on the surface of the element body.

[0005] An object of one aspect of the present invention is to provide an electronic component that suppresses the occurrence of migration even when the external electrodes include a conductive resin layer. [Means for solving the problem]

[0006] An electronic component according to one aspect of the present invention includes a rectangular parallelepiped element body, a plurality of external electrodes, a plurality of internal electrodes, and a plurality of auxiliary internal electrodes. The element body includes a first main surface constituting a mounting surface, a second main surface facing the first main surface in a first direction, a pair of end faces facing each other in a second direction, and a pair of side faces facing each other in a third direction. The plurality of external electrodes are respectively arranged on both ends of the element body in the second direction. The plurality of internal electrodes are arranged side by side in the third direction within the element body, and are electrically connected to corresponding external electrodes among the plurality of external electrodes. The plurality of auxiliary internal electrodes are respectively arranged in the same layer as corresponding internal electrodes among the plurality of internal electrodes, and are electrically connected to external electrodes to which the corresponding internal electrodes are not electrically connected. Each of the plurality of external electrodes includes a conductive resin layer located on the first main surface. Each of the plurality of auxiliary internal electrodes includes a first electrode portion and a second electrode portion. The first electrode portion is exposed to a corresponding end face of the pair of end faces, and is electrically and physically connected to an external electrode to which the corresponding internal electrode is not electrically connected. The second electrode portion is located between the corresponding internal electrode and a conductive resin layer included in an external electrode to which the corresponding internal electrode is not electrically connected.

[0007] In the one aspect, the auxiliary internal electrode is electrically connected to an external electrode to which the corresponding internal electrode is not electrically connected. The second electrode portion of the auxiliary internal electrode is located between a conductive resin layer on the first main surface included in the external electrode to which the auxiliary internal electrode is electrically connected and an internal electrode arranged in the same layer as the auxiliary internal electrode. The second electrode portion of the auxiliary internal electrode is located between the conductive resin layer on the first main surface and the internal electrode that are not electrically connected to each other. Therefore, an electric field is unlikely to be generated between the conductive resin layer on the first main surface and the internal electrode that are not electrically connected to each other. As a result, the one aspect suppresses the occurrence of migration.

[0008] The above one aspect may include the following configuration: In this configuration, the first electrode portion is exposed at the corresponding end surface with a width larger than a width of the second electrode portion. This configuration increases the physical connection length between the first electrode portion and the external electrode, as compared with, for example, a configuration in which the first electrode portion is exposed on the corresponding end surface with a width equal to the width of the second electrode portion, and therefore improves the connectivity between the external electrode and the auxiliary internal electrode.

[0009] The above one aspect may include the following configuration. In this configuration, each of the multiple internal electrodes includes a third electrode portion and a fourth electrode portion. The third electrode portion includes a first end exposed to a corresponding one of a pair of end faces, has a first width, and is separated from the first main surface by a first interval. The fourth electrode portion includes a second end facing the first end in the second direction and located within the element body, has a second width smaller than the first width, and is separated from the first main surface by a second interval larger than the first interval. The second electrode portion is located between a conductive resin layer included in an external electrode to which the corresponding internal electrode is not electrically connected, and the fourth electrode portion. A configuration in which the auxiliary internal electrode is disposed in the same layer as the internal electrode tends to reduce the area of ​​the internal electrode, which may result in a decrease in capacitance. A configuration in which the internal electrode includes a third electrode portion and a fourth electrode portion, and the second electrode portion is located between the conductive resin layer and the fourth electrode portion, which are not electrically connected to each other, suppresses a reduction in the area of ​​the internal electrode.

[0010] The one aspect may include the following configuration. In this configuration, each of the multiple external electrodes includes a conductive resin layer located on the second main surface. A third electrode portion is separated from the second main surface by a third spacing. A fourth electrode portion is separated from the second main surface by a fourth spacing larger than the third spacing. Each of the multiple auxiliary internal electrodes includes an electrode portion located between the conductive resin layer included in an external electrode to which the corresponding internal electrode is not electrically connected and located on the second main surface, and the fourth electrode portion. The electrode portion of the auxiliary internal electrode is located between the conductive resin layer on the second main surface and the internal electrode, which are not electrically connected to each other. Therefore, an electric field is unlikely to be generated between the conductive resin layer on the second main surface and the internal electrode, which are not electrically connected to each other. As a result, the configuration in which the auxiliary internal electrode includes the electrode portion suppresses the occurrence of migration even in the configuration in which the external electrode includes the conductive resin layer on the second main surface. A configuration in which the internal electrode includes a third electrode portion and a fourth electrode portion, and the electrode portion of the auxiliary internal electrode is located between the conductive resin layer on the second main surface and the fourth electrode portion, which are not electrically connected to each other, suppresses a reduction in the area of ​​the internal electrode.

[0011] The above one aspect may include the following configuration. In this configuration, the conductive resin layer includes an edge located on the first main surface. The second electrode portion includes an end that is included in the first electrode portion and faces an end exposed to the corresponding end surface in the second direction. The auxiliary internal electrode and the conductive resin layer that are electrically connected to each other have a relationship in which, with a surface including the corresponding end surface being used as a reference surface, the length from the reference surface to the end included in the second electrode portion is greater than the length from the reference surface to the edge included in the conductive resin layer. In this configuration, an electric field is unlikely to be generated between the conductive resin layer on the first main surface and the internal electrodes, which are not electrically connected to each other, and therefore this configuration reliably suppresses the occurrence of migration.

[0012] The above-mentioned one aspect may include the following configuration: In this configuration, when the auxiliary internal electrode and the conductive resin layer, which are electrically connected to each other, are viewed in a direction perpendicular to the first main surface, the second electrode portion includes a portion exposed from the conductive resin layer. In this configuration, an electric field is unlikely to be generated between the conductive resin layer on the first main surface and the internal electrodes, which are not electrically connected to each other, and therefore this configuration reliably suppresses the occurrence of migration.

[0013] The one aspect may include the following configuration: In this configuration, an internal electrode and an auxiliary internal electrode arranged in the same layer have a relationship in which, with a surface including the corresponding end face at which the auxiliary internal electrode is exposed being taken as a reference surface, the length of the auxiliary internal electrode from the reference surface is greater than the length from the reference surface to the internal electrode. In this configuration, an electric field is unlikely to be generated between the conductive resin layer on the first main surface and the internal electrodes, which are not electrically connected to each other, and therefore this configuration reliably suppresses the occurrence of migration. In this configuration, the internal electrode and the auxiliary internal electrode arranged in the same layer have a relationship in which the length from the reference plane to the internal electrode is smaller than the length from the reference plane of the auxiliary internal electrode. This configuration can increase the length of the internal electrode in the second direction, and therefore the capacitance can be increased.

[0014] The above-mentioned one aspect may include the following configuration, in which the conductive resin layer includes an edge located on the first main surface, and the internal electrode and the conductive resin layer that are not electrically connected to each other have a relationship in which, with a face of a pair of end faces including an end face at which the internal electrode is exposed being taken as a reference face, the length of the internal electrode from the reference face is greater than the length from the reference face to the edge included in the conductive resin layer. This configuration may increase the length of the inner electrodes in the second direction, and therefore may increase the capacitance.

[0015] The one aspect may include the following configuration. In this configuration, each of the plurality of external electrodes includes a conductive resin layer located on a side surface. The plurality of internal electrodes includes an outermost internal electrode adjacent to and electrically connected to the conductive resin layer located on the side surface in the third direction. The outermost internal electrode and the conductive resin layer that is not electrically connected to the outermost internal electrode and is located on the side surface do not overlap each other when viewed from a direction perpendicular to the side surface. In this configuration, the outermost internal electrode is electrically connected to the conductive resin layer on the side surface. The outermost internal electrode is located between the conductive resin layer on the side surface and an internal electrode adjacent to the outermost internal electrode but not electrically connected thereto. The outermost internal electrode is located between the conductive resin layer and the internal electrode on the side surface that are not electrically connected to each other. Therefore, an electric field is unlikely to be generated between the conductive resin layer and the internal electrode on the side surface that are not electrically connected to each other. In this configuration, when viewed from a direction perpendicular to the side surface, the outermost internal electrode does not overlap with the conductive resin layer on the side surface that is not electrically connected to the outermost internal electrode, and therefore an electric field is unlikely to be generated between the outermost internal electrode and the conductive resin layer on the side surface that are not electrically connected to each other. As a result, this configuration suppresses the occurrence of migration even in a configuration in which the external electrodes include conductive resin layers on the side surfaces.

[0016] The above-mentioned one aspect may include the following configuration, in which each of the plurality of external electrodes includes a conductive resin layer located on a side surface, and the internal electrodes and the conductive resin layer located on the side surface, which are not electrically connected to each other, do not overlap each other when viewed from a direction perpendicular to the side surface. In this configuration, when viewed from a direction perpendicular to the side surface, the internal electrodes do not overlap with the conductive resin layers on the side surfaces that are not electrically connected to the internal electrodes. Therefore, an electric field is unlikely to be generated between the internal electrodes and the conductive resin layers on the side surfaces that are not electrically connected to each other. As a result, this configuration suppresses the occurrence of migration even in a configuration in which the external electrodes include the conductive resin layers on the side surfaces.

[0017] The above-mentioned one aspect may include the following configuration. In this configuration, each of the plurality of external electrodes includes a conductive resin layer located on an end face. When the end face and the conductive resin layer located on the end face are viewed in a direction perpendicular to the end face, the end face includes a first region covered by the conductive resin layer located on the end face and a second region exposed from the conductive resin layer located on the end face and closer to the second main face than the first region. This configuration reduces the ESR (equivalent series resistance) compared to a configuration in which the conductive resin layer covers the entire end face.

[0018] The above-mentioned one aspect may include the following configuration: In this configuration, the conductive resin layer includes a plurality of Ag particles. Effect of the Invention

[0019] One aspect of the present invention provides an electronic component that suppresses the occurrence of migration even when the external electrodes include a conductive resin layer. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view of the multilayer capacitor in accordance with the first embodiment. [Diagram 2] FIG. 2 is a diagram showing a cross-sectional configuration of the multilayer capacitor in accordance with the first embodiment. [Diagram 3] FIG. 3 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the first embodiment. [Figure 4] FIG. 4 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the first embodiment. [Diagram 5]FIG. 5 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the first embodiment. [Figure 6] FIG. 6 is a diagram showing the relationship between the internal electrodes, the auxiliary internal electrodes, and the second electrode layer. [Figure 7] FIG. 7 is a diagram showing a cross-sectional structure of a multilayer capacitor according to a modified example of the first embodiment. [Figure 8] FIG. 8 is a diagram showing a cross-sectional structure of a multilayer capacitor according to a modified example of the first embodiment. [Figure 9] FIG. 9 is a perspective view of the multilayer capacitor in accordance with the second embodiment. [Figure 10] FIG. 10 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the second embodiment. [Figure 11] FIG. 11 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the second embodiment. [Figure 12] FIG. 12 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the second embodiment. [Figure 13] FIG. 13 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the second embodiment. [Figure 14] FIG. 14 is a diagram showing the relationship between the internal electrodes, the auxiliary internal electrodes, and the second electrode layer. [Figure 15] FIG. 15 is a perspective view of the multilayer capacitor in accordance with the third embodiment. [Figure 16] FIG. 16 is a cross-sectional view showing the structure of the multilayer capacitor in accordance with the third embodiment. [Figure 17] FIG. 17 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the third embodiment. [Figure 18] FIG. 18 is a perspective view of the multilayer capacitor in accordance with the fourth embodiment. [Figure 19] FIG. 10 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the fourth embodiment. [Figure 20] FIG. 11 is a cross-sectional view showing the structure of the multilayer capacitor in accordance with the fourth embodiment. [Figure 21] FIG. 12 is a diagram showing a cross-sectional structure of the multilayer capacitor in accordance with the fourth embodiment. [Figure 22] FIG. 22 is a diagram showing a cross-sectional configuration of a multilayer capacitor according to a first modified example of the fourth embodiment. [Figure 23] FIG. 23 is a diagram showing a cross-sectional configuration of a multilayer capacitor according to a first modified example of the fourth embodiment. [Figure 24] FIG. 24 is a diagram showing a cross-sectional configuration of a multilayer capacitor according to a second modified example of the fourth embodiment. [Diagram 25] FIG. 25 is a diagram showing a cross-sectional configuration of a multilayer capacitor according to a second modified example of the fourth embodiment. [Figure 26] FIG. 26 is a diagram showing a cross-sectional configuration of a multilayer capacitor according to a third modified example of the fourth embodiment. [Figure 27] FIG. 27 is a diagram showing a cross-sectional configuration of a multilayer capacitor according to a third modified example of the fourth embodiment. [Figure 28] FIG. 28 is a diagram showing a cross-sectional configuration of an electronic component device according to the fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same elements or elements having the same functions will be denoted by the same reference numerals, and duplicated description will be omitted.

[0022] First embodiment The configuration of the multilayer capacitor C1 in accordance with the first embodiment will be described with reference to Figures 1 to 5. Figure 1 is a perspective view of the multilayer capacitor in accordance with the first embodiment. Figures 2, 3, 4, and 5 are views showing cross-sectional configurations of the multilayer capacitor in accordance with the first embodiment. In the first embodiment, the electronic component is, for example, a multilayer capacitor C1.

[0023] 1, the multilayer capacitor C1 includes a rectangular parallelepiped-shaped element body 3 and a plurality of external electrodes 5. The multilayer capacitor C1 includes, for example, a pair of external electrodes 5. The pair of external electrodes 5 are arranged on the outer surface of the element body 3. The pair of external electrodes 5 are spaced apart from each other. The rectangular parallelepiped shape includes a rectangular parallelepiped shape with chamfered corners and ridges, or a rectangular parallelepiped shape with rounded corners and ridges.

[0024] The element body 3 includes a pair of principal surfaces 3a, 3b facing each other, a pair of side surfaces 3c facing each other, and a pair of end surfaces 3e facing each other. The pair of principal surfaces 3a, 3b, the pair of side surfaces 3c, and the pair of end surfaces 3e have a rectangular shape. The direction in which the pair of principal surfaces 3a, 3b face each other includes a first direction D1. The direction in which the pair of side surfaces 3c face each other includes a third direction D3. The direction in which the pair of end surfaces 3e face each other includes a second direction D2. The multilayer capacitor C1 is solder-mounted on an electronic device. The electronic device includes, for example, a circuit board or an electronic component. In the multilayer capacitor C1, a main surface 3a faces the electronic device. The main surface 3a is disposed so as to form a mounting surface. The main surface 3a is the mounting surface. For example, when the main surface 3a includes a first main surface, the main surface 3b includes a second main surface.

[0025] The first direction D1 includes a direction perpendicular to the principal faces 3a, 3b and perpendicular to the third direction D3. The second direction D2 includes a direction parallel to the principal faces 3a, 3b and the side faces 3c and perpendicular to the first direction D1 and the third direction D3. The third direction D3 includes a direction perpendicular to the side faces 3c, and the second direction D2 includes a direction perpendicular to the end faces 3e. The pair of side surfaces 3c extend in the first direction D1 to connect the pair of main surfaces 3a, 3b. The pair of side surfaces 3c also extend in the second direction D2. The pair of end surfaces 3e extend in the first direction D1 to connect the pair of main surfaces 3a, 3b. The pair of end surfaces 3e also extend in the third direction D3.

[0026] For example, the length of the element body 3 in the second direction D2 is greater than the length of the element body 3 in the first direction D1 and is also greater than the length of the element body 3 in the third direction D3. The second direction D2 includes the longitudinal direction of the element body 3. The length of the element body 3 in the first direction D1 and the length of the element body 3 in the third direction D3 may be equal to each other. The length of the element body 3 in the first direction D1 and the length of the element body 3 in the third direction D3 may be different from each other. The length of element body 3 in the first direction D1 is the height of element body 3. The length of element body 3 in the third direction D3 is the width of element body 3. The length of element body 3 in the second direction D2 is the length of element body 3. For example, the height of element body 3 is 0.1 to 3.2 mm, the width of element body 3 is 0.1 to 6.3 mm, and the length of element body 3 is 0.2 to 7.5 mm. For example, the height of element body 3 is 2.5 mm, the width of element body 3 is 2.5 mm, and the length of element body 3 is 3.2 mm.

[0027] The element body 3 includes four ridges 3g, four ridges 3i, and four ridges 3j. The ridges 3g are located between the end face 3e and each of the main faces 3a and 3b. The ridges 3i are located between the end face 3e and each of the side faces 3c. The ridges 3j are located between each of the main faces 3a and 3b and each of the side faces 3c. For example, each of the ridges 3g, 3i, and 3j is rounded to be curved. The element body 3 is subjected to so-called R chamfering. Each of the end faces 3e and each of the main faces 3a and 3b are indirectly adjacent to each other via the ridges 3g. Each of the end faces 3e and each of the side faces 3c are indirectly adjacent to each other via the ridges 3i. Each of the main faces 3a and 3b and each of the side faces 3c are indirectly adjacent to each other via the ridges 3j.

[0028] The element body 3 is configured by stacking a plurality of dielectric layers in the third direction D3. The element body 3 includes a plurality of dielectric layers stacked together. In the element body 3, the stacking direction of the plurality of dielectric layers coincides with the third direction D3. Each dielectric layer is configured, for example, from a sintered body of a ceramic green sheet including a dielectric material. The dielectric material includes, for example, a BaTiO3-based, Ba(Ti,Zr)O3-based, or (Ba,Ca)TiO3-based dielectric ceramic. In the actual element body 3, the dielectric layers are integrated to such an extent that the boundaries between the dielectric layers are not visible.

[0029] As shown in FIG. 1, the external electrodes 5 are disposed on both ends of the element body 3 in the second direction D2. Each external electrode 5 is disposed on a corresponding end face 3e of the element body 3. In this embodiment, each external electrode 5 is disposed on a pair of main faces 3a, 3b, a pair of side faces 3c, and one end face 3e. As shown in FIGS. 2 to 4, the external electrode 5 includes a plurality of electrode portions 5a, 5b, 5c, and 5e. The electrode portion 5a is disposed on the main face 3a. The electrode portion 5a may be disposed on the ridge portion 3g. The electrode portion 5b is disposed on the main face 3b. The electrode portion 5b may be disposed on the ridge portion 3g. The electrode portion 5c is disposed on the side face 3c. The electrode portion 5c may be disposed on the ridge portion 3i. The electrode portion 5e is disposed on the end face 3e. The external electrode 5 also includes an electrode portion disposed on the ridge portion 3j.

[0030] Each external electrode 5 is formed on five surfaces, namely, a pair of main surfaces 3a, 3b, a pair of side surfaces 3c, and one end surface 3e, as well as on ridge portions 3g, 3i, 3j. The electrode portions 5a, 5b, 5c, 5e adjacent to each other are connected and electrically connected. As shown in Figs. 2 to 4, each external electrode 5 includes a first electrode layer E1, a second electrode layer E2, and a third electrode layer E3. The third electrode layer E3 constitutes the outermost layer of the external electrode 5. Each electrode portion 5a, 5c, 5e includes a first electrode layer E1, a second electrode layer E2, and a third electrode layer E3. The electrode portion 5b includes a first electrode layer E1 and a third electrode layer E3.

[0031] The first electrode layer E1 of the electrode portion 5a is disposed on the principal surface 3a. The first electrode layer E1 of the electrode portion 5a covers a partial region of the principal surface 3a. The first electrode layer E1 of the electrode portion 5a is in contact with the partial region of the principal surface 3a. In the electrode portion 5a, the first electrode layer E1 is in direct contact with the element body 3. The partial region of the principal surface 3a is covered by the first electrode layer E1, and the remaining part excluding the partial region is exposed from the first electrode layer E1. The partial region of the principal surface 3a is located closer to the end face 3e. The first electrode layer E1 of the electrode portion 5a is located on the principal surface 3a. The first electrode layer E1 does not have to be disposed on the principal surface 3a. The second electrode layer E2 of the electrode portion 5a is disposed on the first electrode layer E1 and the main surface 3a. The second electrode layer E2 of the electrode portion 5a is formed on the first electrode layer E1 so as to cover the first electrode layer E1 of the electrode portion 5a, and is also formed on the main surface 3a so as to cover a part of the main surface 3a. The second electrode layer E2 of the electrode portion 5a is in contact with the part of the main surface 3a and the entire first electrode layer E1. In the electrode portion 5a, the second electrode layer E2 is in direct contact with the first electrode layer E1 and the main surface 3a. In the electrode portion 5a, the second electrode layer E2 indirectly covers the main surface 3a so that the first electrode layer E1 is located between the second electrode layer E2 and the main surface 3a. The second electrode layer E2 of the electrode portion 5a is located on the main surface 3a. The second electrode layer E2 of the electrode portion 5a is formed on the edge E2e located on the main surface 3a. a Includes. The third electrode layer E3 of the electrode portion 5a is disposed on the second electrode layer E2. In the electrode portion 5a, the third electrode layer E3 covers the second electrode layer E2. In the electrode portion 5a, the third electrode layer E3 is in contact with the second electrode layer E2. In the electrode portion 5a, the third electrode layer E3 is in direct contact with the second electrode layer E2. In the electrode portion 5a, the third electrode layer E3 is not in direct contact with the first electrode layer E1. The third electrode layer E3 of the electrode portion 5a is located on the main surface 3a.

[0032] The first electrode layer E1 of the electrode portion 5b is disposed on the principal surface 3b. The first electrode layer E1 of the electrode portion 5b covers a partial region of the principal surface 3b. The first electrode layer E1 of the electrode portion 5b is in contact with the partial region of the principal surface 3b. In the electrode portion 5b, the first electrode layer E1 is in direct contact with the element body 3. The partial region of the principal surface 3b is covered by the first electrode layer E1, and the remaining part excluding the partial region is exposed from the first electrode layer E1. The partial region of the principal surface 3b is located closer to the end face 3e. The first electrode layer E1 of the electrode portion 5b is located on the principal surface 3b. The first electrode layer E1 does not have to be disposed on the principal surface 3b. The third electrode layer E3 of the electrode portion 5b is disposed on the first electrode layer E1. In the electrode portion 5b, the third electrode layer E3 covers the first electrode layer E1. In the electrode portion 5b, the third electrode layer E3 is in contact with the first electrode layer E1. In the electrode portion 5b, the third electrode layer E3 is in direct contact with the first electrode layer E1. The third electrode layer E3 of the electrode portion 5b is located on the main surface 3b. The electrode portion 5b does not include the second electrode layer E2. The main surface 3b is not covered with the second electrode layer E2.

[0033] The first electrode layer E1 of the electrode portion 5c is disposed on the side surface 3c. The first electrode layer E1 of the electrode portion 5c covers a partial area of ​​the side surface 3c. The first electrode layer E1 of the electrode portion 5c is in contact with the partial area of ​​the side surface 3c. In the electrode portion 5c, the first electrode layer E1 is in direct contact with the element body 3. The partial area of ​​the side surface 3c is covered by the first electrode layer E1, and the remaining part excluding the partial area is exposed from the first electrode layer E1. The partial area of ​​the side surface 3c is located closer to the end face 3e. The first electrode layer E1 of the electrode portion 5c is located on the side surface 3c. The first electrode layer E1 does not have to be disposed on the side surface 3c. The second electrode layer E2 of the electrode portion 5c is disposed on the first electrode layer E1 and the side surface 3c. In the electrode portion 5c, the second electrode layer E2 covers a part of the first electrode layer E1 and a part of the side surface 3c. In the electrode portion 5c, the second electrode layer E2 is in direct contact with the part of the first electrode layer E1 and the part of the side surface 3c. The second electrode layer E2 of the electrode portion 5c covers the part of the first electrode layer E1 of the electrode portion 5c. The region included in the side surface 3c and covered by the second electrode layer E2 is located, for example, near the main surface 3a and the end surface 3e. In the electrode portion 5c, the second electrode layer E2 indirectly covers the side surface 3c such that the first electrode layer E1 is located between the second electrode layer E2 and the side surface 3c. The first electrode layer E1 of the electrode portion 5c is covered by the second electrode layer E2 in the part, and is exposed from the second electrode layer E2 in the remaining part except for the part. The second electrode layer E2 of the electrode portion 5c is located on the side surface 3c. The third electrode layer E3 of the electrode portion 5c is disposed on the first electrode layer E1 and the second electrode layer E2. In the electrode portion 5c, the third electrode layer E3 covers the entire second electrode layer E2 and covers the entire portion of the first electrode layer E1 exposed from the second electrode layer E2. In the electrode portion 5c, the third electrode layer E3 is in contact with the entire second electrode layer E2 and is in contact with the entire portion of the first electrode layer E1 exposed from the second electrode layer E2. In the electrode portion 5c, the third electrode layer E3 is in direct contact with the first electrode layer E1 and the second electrode layer E2. The third electrode layer E3 of the electrode portion 5c is located on the side surface 3c.

[0034] The electrode portion 5c includes a plurality of regions 5c1 and 5c2 as shown in FIG. 1. For example, the electrode portion 5c includes only two regions 5c1 and 5c2. The region 5c2 is located closer to the main surface 3a than the region 5c1. The region 5c1 includes the first electrode layer E1 and the third electrode layer E3. The region 5c1 does not include the second electrode layer E2. The region 5c2 includes the first electrode layer E1, the second electrode layer E2, and the third electrode layer E3. The region 5c1 includes a region where the first electrode layer E1 is exposed from the second electrode layer E2. The region 5c2 includes a region where the first electrode layer E1 is covered with the second electrode layer E2.

[0035] The first electrode layer E1 of the electrode portion 5e is disposed on the end surface 3e. The first electrode layer E1 of the electrode portion 5e covers the entire end surface 3e. The first electrode layer E1 of the electrode portion 5e is in contact with the entire end surface 3e. In the electrode portion 5e, the first electrode layer E1 is in direct contact with the end surface 3e. The second electrode layer E2 of the electrode portion 5e is disposed on the first electrode layer E1. In the electrode portion 5e, the second electrode layer E2 covers a part of the first electrode layer E1. In the electrode portion 5e, the second electrode layer E2 is in direct contact with the part of the first electrode layer E1. The second electrode layer E2 of the electrode portion 5e is formed so as to cover the part of the first electrode layer E1 of the electrode portion 5e. In the electrode portion 5e, the second electrode layer E2 indirectly covers a part of the end face 3e so that the first electrode layer E1 is located between the second electrode layer E2 and the end face 3e. The part of the end face 3e is located, for example, closer to the main surface 3a. The part of the first electrode layer E1 of the electrode portion 5e is covered by the second electrode layer E2, and the remaining part excluding the part is exposed from the second electrode layer E2. The second electrode layer E2 of the electrode portion 5e is located on the end face 3e. The third electrode layer E3 of the electrode portion 5e is disposed on the first electrode layer E1 and the second electrode layer E2. In the electrode portion 5e, the third electrode layer E3 covers the entire second electrode layer E2 and covers the entire portion of the first electrode layer E1 exposed from the second electrode layer E2. In the electrode portion 5e, the third electrode layer E3 is in contact with the entire second electrode layer E2 and is in contact with the entire portion of the first electrode layer E1 exposed from the second electrode layer E2. In the electrode portion 5e, the third electrode layer E3 is in direct contact with the first electrode layer E1 and the second electrode layer E2. The third electrode layer E3 of the electrode portion 5e is located on the end surface 3e. The electrode portion 5e may not include the second electrode layer E2. In a configuration in which the electrode portion 5e does not include the second electrode layer E2, the third electrode layer E3 included in the electrode portion 5e covers the entire first electrode layer E1 and is in direct contact with the first electrode layer E1.

[0036] The electrode portion 5e includes a plurality of regions 5e1 and 5e2. For example, the electrode portion 5e includes only two regions 5e1 and 5e2. The region 5e2 is located closer to the main surface 3a than the region 5e1. The region 5e1 includes the first electrode layer E1 and the third electrode layer E3. The region 5e1 does not include the second electrode layer E2. The region 5e2 includes the first electrode layer E1, the second electrode layer E2, and the third electrode layer E3. In the electrode portion 5e, the third electrode layer E3 covers the entire end surface 3e when viewed from the second direction D2. For example, the third electrode layer E3 indirectly covers the entire end surface 3e. The region 5e1 includes a region where the first electrode layer E1 is exposed from the second electrode layer E2. The region 5e2 includes a region where the first electrode layer E1 is covered by the second electrode layer E2. When the end surface 3e and the second electrode layer E2 located on the end surface 3e are viewed from the second direction D2, the end surface 3e includes a region 3e1 covered by the second electrode layer E2 located on the end surface 3e and a region 3e2 exposed from the second electrode layer E2 located on the end surface 3e. The region 3e2 is closer to the main surface 3b than the region 3e1. For example, when the region 3e1 includes the first region, the region 3e2 includes the second region.

[0037] The first electrode layer E1 is formed by baking a conductive paste applied to the surface of the element body 3. The first electrode layer E1 is formed so as to cover the above-mentioned partial regions of each of the main faces 3a, 3b, the above-mentioned partial regions of each of the side faces 3c, one end face 3e, and the ridges 3g, 3i, 3j. The first electrode layer E1 is formed by sintering a metal component (metal particles) contained in the conductive paste. The first electrode layer E1 includes a sintered metal layer. The first electrode layer E1 includes a sintered metal layer formed on the element body 3. For example, the first electrode layer E1 includes a sintered metal layer made of Cu. The first electrode layer E1 may include a sintered metal layer made of Ni. The first electrode layer E1 includes a base metal. The conductive paste includes, for example, particles made of Cu or Ni, a glass component, an organic binder, and an organic solvent. The first electrode layer E1 included in each of the electrode portions 5a, 5b, 5c, 5e is integrally formed.

[0038] The second electrode layer E2 is formed by hardening a conductive resin paste applied onto the first electrode layer E1. The second electrode layer E2 is formed over the first electrode layer E1 and the element body 3. The first electrode layer E1 includes a base metal layer for forming the second electrode layer E2. The second electrode layer E2 includes a conductive resin layer covering the first electrode layer E1. The conductive resin paste includes, for example, a resin, a conductive material, and an organic solvent. The resin includes, for example, a thermosetting resin. The conductive material includes, for example, metal particles. The metal particles include, for example, Ag particles. In this embodiment, the second electrode layer E2 includes a plurality of Ag particles. The thermosetting resin includes, for example, a phenol resin, an acrylic resin, a silicone resin, an epoxy resin, or a polyimide resin. The second electrode layer E2 is in contact with a part of the ridge portion 3j. The second electrode layer E2 included in each of the electrode portions 5a, 5c, and 5e is integrally formed.

[0039] The third electrode layer E3 is formed on the second electrode layer E2 and on the first electrode layer E1 (a portion exposed from the second electrode layer E2) by plating. The third electrode layer E3 may have a multi-layer structure. In this case, the third electrode layer E3 includes, for example, a Ni plating layer and a solder plating layer. The Ni plating layer is formed on the second electrode layer E2 and the first electrode layer E1. The solder plating layer is formed on the Ni plating layer. The solder plating layer covers the Ni plating layer. The Ni plating layer has better solder erosion resistance than the metal included in the second electrode layer E2. The third electrode layer E3 may include a Sn plating layer, a Cu plating layer, or a Au plating layer instead of the Ni plating layer. The solder plating layer includes, for example, a Sn plating layer, a Sn-Ag alloy plating layer, a Sn-Bi alloy plating layer, or a Sn-Cu alloy plating layer. The third electrode layer E3 included in each of the electrode portions 5a, 5b, 5c, and 5e is integrally formed.

[0040] In the multilayer capacitor C1, the second electrode layer E2 continuously covers only a part of the main surface 3a, only a part of the end surface 3e, and only a part of each of the pair of side surfaces 3c. The second electrode layer E2 includes a portion continuously covering only a part of the main surface 3a, only a part of the end surface 3e, and only a part of each of the pair of side surfaces 3c. The part included in the end surface 3e and covered by the second electrode layer E2 is located closer to the main surface 3a. The part included in the side surface 3c and covered by the second electrode layer E2 is located closer to the main surface 3a. The second electrode layer E2 covers the entire one edge portion 3g, only a part of the edge portion 3i, and only a part of the edge portion 3j. A part of the part of the first electrode layer E1 covering the edge portion 3i is exposed from the second electrode layer E2. For example, the first electrode layer E1 included in each region 5c1, 5e1 is exposed from the second electrode layer E2. In a configuration in which the electrode portion 5e does not include the second electrode layer E2, the second electrode layer E2 continuously covers only a part of the principal surface 3a and only a part of each of the pair of side surfaces 3c. The second electrode layer E2 includes a portion continuously covering only a part of the principal surface 3a and only a part of each of the pair of side surfaces 3c.

[0041] As shown in Figs. 2 to 5, the multilayer capacitor C1 includes a plurality of internal electrodes 7 and a plurality of internal electrodes 9. Each of the internal electrodes 7, 9 is included in an internal conductor disposed in the element body 3. Each of the internal electrodes 7, 9 includes a conductive material that is typically used as an internal conductor of a multilayer electronic component. The conductive material includes, for example, a base metal. The conductive material includes, for example, Ni or Cu. Each of the internal electrodes 7, 9 is configured as a sintered body of a conductive paste including the conductive material. In this embodiment, each of the internal electrodes 7, 9 includes Ni.

[0042] The internal electrodes 7 and 9 are arranged at different positions (layers) in the third direction D3. The internal electrodes 7 and 9 face each other with a gap in the third direction D3 in the element body 3. The multiple internal electrodes 7 and the multiple internal electrodes 9 are arranged alternately in the third direction D3. The internal electrodes 7 and 9 have different polarities from each other. Ends of each of the internal electrodes 7 and 9 are exposed at the corresponding end face 3e of a pair of end faces 3e. The internal electrode 7 includes an end 7e1 exposed at the corresponding end face 3e. The internal electrode 9 includes an end 9e1 exposed at the corresponding end face 3e. Each of the internal electrodes 7 and 9 is exposed only at the corresponding end face 3e. Each of the ends 7e1 and 9e1 is covered by an electrode portion 5e included in the corresponding external electrode 5 of the pair of external electrodes 5. Each of the ends 7e1 and 9e1 is directly connected to an electrode portion 5e included in the corresponding external electrode 5. Each of the internal electrodes 7 and 9 is electrically connected to a corresponding external electrode.

[0043] The internal electrode 7 includes an end 7e2 facing the second direction D2 at the end 7e1. The end 7e2 is located within the element body 3. The end 7e2 is closer to the end surface 3e to which the internal electrode 9 is exposed than the end 7e1. The internal electrode 7 includes a pair of ends 7e1, 7e2 facing each other in the second direction D2. For example, when the end 7e1 includes a first end, the end 7e2 includes a second end. The internal electrode 9 includes an end 9e2 facing the second direction D2 from the end 9e1. The end 9e2 is located within the element body 3. The end 9e2 is closer to the end surface 3e to which the internal electrode 7 is exposed than the end 9e1. The internal electrode 9 includes a pair of ends 9e1, 9e2 facing each other in the second direction D2. For example, when the end 9e1 includes a first end, the end 9e2 includes a second end.

[0044] The multiple internal electrodes 7, 9 are arranged in the element body 3, side by side in the third direction D3. Each internal electrode 7, 9 is located in a plane substantially parallel to each side surface 3c. Each internal electrode 7, 9 is arranged to extend in a direction intersecting with the main surface 3a. For example, each internal electrode 7, 9 is arranged to extend in a direction substantially perpendicular to the main surface 3a. The internal electrodes 7 and 9 face each other in the third direction D3. The internal electrode 7 includes a region facing the internal electrode 9 in the third direction D3. The internal electrode 9 includes a region facing the internal electrode 7 in the third direction D3. The direction in which the internal electrodes 7 and 9 face each other (the third direction D3) is perpendicular to the direction parallel to each side surface 3c (the first direction D1 and the second direction D2).

[0045] 2, the internal electrode 7 includes a plurality of electrode portions 7a, 7b. For example, the internal electrode 7 includes a pair of electrode portions 7a, 7b. For example, when the electrode portion 7a includes a third electrode portion, the electrode portion 7b includes a fourth electrode portion. The electrode portion 7a includes an end 7e1. The electrode portion 7a has a width W 7a It has a width W 7a is, for example, the length in the first direction D1 of a region included in the electrode portion 7a and facing the internal electrode 9 in the third direction D3. 7a1 The distance L is away from the main surface 3a. 7a1 is, for example, the distance in the first direction D1 between the electrode portion 7a and the main surface 3a. The electrode portion 7b includes an end 7e2. The electrode portion 7b is closer to the end surface 3e where the internal electrode 9 is exposed than the electrode portion 7a. The electrode portion 7b has a width W 7b It has a width W 7b is, for example, the length of the electrode portion 7b in the first direction D1. 7b is the width W 7a The electrode portion 7b has a spacing L 7a2 The distance L is away from the main surface 3a. 7a2 is, for example, the distance in the first direction D1 between the electrode portion 7b and the main surface 3a. 7a2 is the interval L 7a1The electrode portion 7b is farther from the main surface 3a in the first direction D1 than the electrode portion 7a. For example, 7a If includes the first width, then width W 7b includes the second width. For example, the interval L 7a1 If contains the first interval, the interval L 7a2 includes the second interval.

[0046] 3, the internal electrode 9 includes a plurality of electrode portions 9a, 9b. For example, the internal electrode 9 includes a pair of electrode portions 9a, 9b. For example, when the electrode portion 9a includes a third electrode portion, the electrode portion 9b includes a fourth electrode portion. The electrode portion 9a includes an end 9e1. The electrode portion 9a has a width W 9a It has a width W 9a is, for example, the length in the first direction D1 of a region included in the electrode portion 9a and facing the internal electrode 7 in the third direction D3. 9a1 The distance L is away from the main surface 3a. 9a1 is, for example, the distance in the first direction D1 between the electrode portion 9a and the main surface 3a. 9a is the width W 7a may be equal to the width W 7a The interval L may be different from 9a1 is the interval L 7a1 may be equal to the interval L 7a1 may be different from. The electrode portion 9b includes an end 9e2. The electrode portion 9b is closer to the end surface 3e where the internal electrode 7 is exposed than the electrode portion 9a. The electrode portion 9b has a width W 9b It has a width W 7b is, for example, the length of the electrode portion 7b in the first direction D1. 9b is the width W 9a The electrode portion 9b has a spacing L 9a2 The distance L is away from the main surface 3a. 9a2 is, for example, the distance in the first direction D1 between the electrode portion 9b and the main surface 3a. 9a2 is the interval L 9a1The electrode portion 9b is farther from the main surface 3a in the first direction D1 than the electrode portion 9a. 9b is the width W 9b may be equal to the width W 9b The interval L may be different from 9a2 is the interval L 7a2 may be equal to the interval L 7a2 For example, the width W 9a If includes the first width, then width W 9b includes the second width. For example, the interval L 9a1 If contains the first interval, the interval L 9a2 includes the second interval.

[0047] The electrode portions 7a are spaced apart by a distance L 7b1 The distance L is away from the main surface 3b. 7b1 is, for example, the distance in the first direction D1 between the electrode portion 7a and the main surface 3b. 7b2 The distance L is away from the main surface 3b. 7b2 is, for example, the distance in the first direction D1 between the electrode portion 7b and the main surface 3b. For example, the interval L 7b2 is the interval L 7b1 is roughly equivalent to The electrode portions 9a are spaced apart by a distance L 9b1 The distance L is away from the main surface 3b. 9b1 is, for example, the distance in the first direction D1 between the electrode portion 9a and the main surface 3b. 9b2 The distance L is away from the main surface 3b. 9b2 is, for example, the distance in the first direction D1 between the electrode portion 9b and the main surface 3b. For example, the interval L 9b2 is the interval L 9b1 The distance L is approximately equal to 9b1 is the interval L 7b1 may be equal to the interval L 7b1 The interval L may be different from 9b2 is the interval L 7b2 may be equal to the interval L 7b2 may be different from.

[0048] The plurality of internal electrodes 7 may include, for example, one internal electrode 7 located on the outermost side in the third direction D3. OM Includes inner electrode 7 OM The inner electrode 7 is adjacent to one of the pair of side surfaces 3c in the third direction D3. OM Among the multiple internal electrodes 7, the internal electrode 7 is closest to one side surface 3c. OM is the outermost inner electrode. The plurality of internal electrodes 9 may include, for example, one internal electrode 9 located on the outermost side in the third direction D3. OM Includes internal electrodes 9 OM The inner electrode 9 is adjacent to the other of the pair of side surfaces 3c in the third direction D3. OM Among the multiple internal electrodes 9, the internal electrode 9 is closest to the other side surface 3c. OM is the outermost inner electrode.

[0049] As shown in Figs. 2 to 5, the multilayer capacitor C1 includes a plurality of auxiliary internal electrodes 11 and a plurality of auxiliary internal electrodes 13. Each of the auxiliary internal electrodes 11, 13 is an internal conductor disposed in the element body 3. The auxiliary internal electrodes 11, 13, like the internal electrodes 7, 9, are made of a conductive material that is usually used as an internal conductor of a multilayer electronic component. The conductive material includes, for example, a base metal. The conductive material includes, for example, Ni or Cu. The auxiliary internal electrodes 11, 13 are configured as a sintered body of a conductive paste that includes the conductive material. In this embodiment, the auxiliary internal electrodes 11, 13 are made of Ni.

[0050] Each of the auxiliary internal electrodes 11 is disposed in the same layer as the corresponding internal electrode 7 among the multiple internal electrodes 7. Each of the auxiliary internal electrodes 11 is disposed between the corresponding internal electrode 7 and the end face 3e where the internal electrode 7 is not exposed. For example, one internal electrode 7 and one auxiliary internal electrode 11 are located in the same layer. One internal electrode 7 and one auxiliary internal electrode 11 face each other in the second direction D2 in the same layer. The internal electrode 7 and the auxiliary internal electrode 11 disposed in the same layer are separated from each other in the second direction D2. The auxiliary internal electrode 11 is separated from each of the main surfaces 3a, 3b and is not exposed to each of the main surfaces 3a, 3b. 2, the auxiliary internal electrode 11 includes a plurality of electrode portions 11a and 11b. For example, the auxiliary internal electrode 11 includes a pair of electrode portions 11a and 11b. For example, when the electrode portion 11a includes a first electrode portion, the electrode portion 11b includes a second electrode portion.

[0051] The electrode portion 11a is exposed at a corresponding one of the pair of end faces 3e. The electrode portion 11a is exposed at the end face 3e where the internal electrode 7 is not exposed. The electrode portion 11a includes an end 11e1 exposed at the end face 3e where the internal electrode 7 is not exposed. The electrode portion 11a is directly connected at an end 11e1 to the electrode portion 5e of the corresponding one of the pair of external electrodes 5. The electrode portion 11a is electrically and physically connected to the electrode portion 5e of the corresponding external electrode 5. The electrode portion 5e to which the electrode portion 11a is electrically and physically connected is different from the electrode portion 5e to which the internal electrode 7 is electrically and physically connected. The internal electrode 7 is not electrically connected to the electrode portion 5e to which the electrode portion 11a is electrically and physically connected. The electrode portion 11a is electrically and physically connected to the external electrode 5 to which the internal electrode 7 is not electrically connected. The electrode portion 11b is located between the internal electrode 7 and a second electrode layer E2 included in the electrode portion 5a of the external electrode 5 that is not electrically and physically connected to the internal electrode 7 located in the same layer. The electrode portion 11b is located between the electrode portion 7b included in the internal electrode 7 located in the same layer and the second electrode layer E2 of the electrode portion 5a in the first direction D1. The electrode portion 7b and the electrode portion 11b located in the same layer are separated from each other in the first direction D1. The electrode portion 7a and the electrode portion 11b located in the same layer are separated from each other in the second direction D2.

[0052] The electrode portion 11a has a width W 11a The electrode portion 11a has a width W 11a It is exposed at width W 11a is, for example, the length of the electrode portion 11a in the first direction D1. The electrode portion 11b has a width W 11b It has a width W 11b is, for example, the length of the electrode portion 11b in the first direction D1. 11a is the width W 11b Greater than. The electrode portion 11b is spaced apart by a distance L 11a1 The distance L is away from the main surface 3a. 11a1 is, for example, the distance in the first direction D1 between the electrode portion 11b and the main surface 3a. 11a1 is the interval L 7a1 may be equal to the interval L 7a1 may be different from.

[0053] The electrode portion 11b includes an end 11e2 facing the end 11e1 in the second direction D2. The end 11e2 is located within the element body 3. The end 11e2 is closer to the end surface 3e to which the internal electrode 7 is exposed than the end 11e1. The auxiliary internal electrode 11 includes a pair of ends 11e1, 11e2 facing each other in the second direction D2. The auxiliary internal electrode 11 and the second electrode layer E2 of the electrode portion 5a, which are electrically connected to each other, have a length L11 from the reference plane PL1 to the end 11e2, which is longer than the length L11 from the reference plane PL1 to the end edge E2e aThe reference plane PL1 includes the end face 3e from which the auxiliary internal electrode 11 (end 11e1) is exposed. The length L11 is the maximum length of the auxiliary internal electrode 11 in the second direction D2. As shown in Fig. 6, when the auxiliary internal electrode 11 and the second electrode layer E2 of the electrode portion 5a electrically connected to the auxiliary internal electrode 11 are viewed from the first direction D1, the electrode portion 11b includes a portion exposed from the second electrode layer E2 of the electrode portion 5a electrically connected to the auxiliary internal electrode 11. Fig. 6 is a diagram showing the relationship between the internal electrodes, the auxiliary internal electrodes, and the second electrode layer.

[0054] The internal electrode 7 and the auxiliary internal electrode 11 arranged in the same layer have a relationship in which the length of the auxiliary internal electrode 11 from the reference plane PL1 is greater than the length from the reference plane PL1 to the internal electrode 7. The length of the auxiliary internal electrode 11 from the reference plane PL1 is defined, for example, by the maximum length of the auxiliary internal electrode 11 in the second direction D2. That is, the length of the auxiliary internal electrode 11 from the reference plane PL1 is defined, for example, by the length L11. The length from the reference plane PL1 to the internal electrode 7 is defined, for example, by the minimum length L13 from the reference plane PL1 to the internal electrode 7 in the second direction D2.

[0055] The internal electrode 7 and the second electrode layer E2 of the electrode portion 5a, which are not electrically connected to each other, are such that the length of the internal electrode 7 from the reference plane PL2 is the distance from the reference plane PL2 to the edge E2e of the second electrode layer E2 of the electrode portion 5a that is not electrically connected to the internal electrode 7. a The length of the internal electrode 7 from the reference plane PL2 is defined by, for example, the maximum length L14 of the internal electrode 7 in the second direction D2. a The length from the reference plane PL2 to the edge E2e a The reference plane PL2 is defined by a length L15 in the second direction D2 from the end surface 3e to the end surface 7e1 of the internal electrode 7.

[0056] Each of the auxiliary internal electrodes 13 is disposed in the same layer as the corresponding internal electrode 9 among the multiple internal electrodes 9. Each of the auxiliary internal electrodes 13 is disposed between the corresponding internal electrode 9 and the end face 3e where the internal electrode 9 is not exposed. For example, one internal electrode 9 and one auxiliary internal electrode 13 are located in the same layer. One internal electrode 9 and one auxiliary internal electrode 13 face each other in the second direction D2 in the same layer. The internal electrode 9 and the auxiliary internal electrode 13 disposed in the same layer are separated from each other in the second direction D2. The auxiliary internal electrode 13 is separated from each of the main surfaces 3a, 3b and is not exposed to each of the main surfaces 3a, 3b. 3, the auxiliary internal electrode 13 includes a plurality of electrode portions 13a, 13b. For example, the auxiliary internal electrode 13 includes a pair of electrode portions 13a, 13b. For example, when the electrode portion 13a includes a first electrode portion, the electrode portion 13b includes a second electrode portion.

[0057] The electrode portion 13a is exposed at a corresponding one of the pair of end faces 3e. The electrode portion 13a is exposed at the end face 3e where the internal electrode 9 is not exposed. The electrode portion 13a includes an end 13e1 exposed at the end face 3e where the internal electrode 9 is not exposed. The electrode portion 13a is directly connected at an end 13e1 to the electrode portion 5e of the corresponding one of the pair of external electrodes 5. The electrode portion 13a is electrically and physically connected to the electrode portion 5e of the corresponding external electrode 5. The electrode portion 5e to which the electrode portion 13a is electrically and physically connected is different from the electrode portion 5e to which the internal electrode 9 is electrically and physically connected. The internal electrode 9 is not electrically connected to the electrode portion 5e to which the electrode portion 13a is electrically and physically connected. The electrode portion 13a is electrically and physically connected to the external electrode 5 to which the internal electrode 9 is not electrically connected. The electrode portion 13b is located between the internal electrode 9 and a second electrode layer E2 included in the electrode portion 5a of the external electrode 5 that is not electrically and physically connected to the internal electrode 9 located in the same layer. The electrode portion 13b is located in the first direction D1 between the electrode portion 9b included in the internal electrode 9 located in the same layer and the second electrode layer E2 of the electrode portion 5a. The electrode portion 9b and the electrode portion 13b located in the same layer are separated from each other in the first direction D1. The electrode portion 9a and the electrode portion 13b located in the same layer are separated from each other in the second direction D2.

[0058] The electrode portion 13a has a width W 13a The electrode portion 13a has a width W 13a It is exposed at width W 13a is, for example, the length of the electrode portion 13a in the first direction D1. The electrode portion 13b has a width W 13b It has a width W 13b is, for example, the length of the electrode portion 13b in the first direction D1. 13a is the width W 13b Greater than. The electrode portion 13b is spaced apart by a distance L 13a1 The distance L is away from the main surface 3a. 13a1 is, for example, the distance in the first direction D1 between the electrode portion 13b and the main surface 3a. 13a1 is the interval L 9a1 may be equal to the interval L 9a1 may be different from.

[0059] The electrode portion 13b includes an end 13e2 facing the end 13e1 in the second direction D2. The end 13e2 is located within the element body 3. The end 13e2 is closer to the end surface 3e to which the internal electrode 9 is exposed than the end 13e1. The auxiliary internal electrode 13 includes a pair of ends 13e1, 13e2 facing each other in the second direction D2. The auxiliary internal electrode 13 and the second electrode layer E2 of the electrode portion 5a, which are electrically connected to each other, have a length L21 from the reference plane PL2 to the end 13e2 that is longer than the length L21 from the reference plane PL2 to the end edge E2e a6, when the auxiliary internal electrode 13 and the second electrode layer E2 of the electrode portion 5a electrically connected to the auxiliary internal electrode 13 are viewed in the first direction D1, the electrode portion 13b includes a portion exposed from the second electrode layer E2 of the electrode portion 5a electrically connected to the auxiliary internal electrode 13.

[0060] The internal electrode 9 and the auxiliary internal electrode 13 arranged in the same layer have a relationship in which the length of the auxiliary internal electrode 13 from the reference plane PL2 is greater than the length from the reference plane PL2 to the internal electrode 9. The length of the auxiliary internal electrode 13 from the reference plane PL2 is defined, for example, by the maximum length of the auxiliary internal electrode 13 in the second direction D2. That is, the length of the auxiliary internal electrode 13 from the reference plane PL2 is defined, for example, by the length L21. The length from the reference plane PL2 to the internal electrode 9 is defined, for example, by the minimum length L23 from the reference plane PL2 to the internal electrode 9 in the second direction D2.

[0061] The internal electrode 9 and the second electrode layer E2 of the electrode portion 5a, which are not electrically connected to each other, are such that the length of the internal electrode 9 from the reference plane PL1 is the distance from the reference plane PL1 to the edge E2e of the second electrode layer E2 of the electrode portion 5a that is not electrically connected to the internal electrode 9. a The length of the internal electrode 9 from the reference plane PL1 is defined by, for example, a maximum length L24 of the internal electrode 9 in the second direction D2. a The length from the reference plane PL1 to the edge E2e a The reference plane PL1 is defined by a length L25 in the second direction D2 from the end surface 3e to the end surface 9e1 of the internal electrode 9.

[0062] Internal electrode 7 OM 7 inner electrodes OM The internal electrode 7 is adjacent to the second electrode layer E2 of the electrode portion 5c that is electrically connected to the OMThe internal electrode 7 faces the electrode portion 9b in the third direction D3. OM 7 inner electrodes OM When viewed from the third direction D3, the internal electrode 7 does not overlap with the second electrode layer E2 of the electrode portion 5c that is not electrically connected to the OM The second electrode layer E2 of the electrode portion 5c electrically connected to the internal electrode 9 does not overlap the internal electrode 7. OM When the second electrode layer E2 of the electrode portion 5c electrically connected to the auxiliary internal electrode 11 is viewed from the third direction D3, OM and the second electrode layer E2 of the electrode portion 5c electrically connected to the auxiliary internal electrode 11 are spaced apart from each other in the second direction D2. Internal electrode 9 OM 9 inner electrodes OM The internal electrode 9 is adjacent to the second electrode layer E2 of the electrode portion 5c that is electrically connected to the OM The internal electrode 9 faces the electrode portion 7b in the third direction D3. OM 9 inner electrodes OM When viewed from the third direction D3, the internal electrode 9 does not overlap with the second electrode layer E2 of the electrode portion 5c that is not electrically connected to the OM The internal electrode 9 does not overlap the second electrode layer E2 of the electrode portion 5c that is electrically connected to the internal electrode 7. OM When the second electrode layer E2 of the electrode portion 5c electrically connected to the auxiliary internal electrode 13 is viewed from the third direction D3, OM and the second electrode layer E2 of the electrode portion 5c electrically connected to the auxiliary internal electrode 13 are spaced apart from each other in the second direction D2.

[0063] As shown in Figs. 2 to 5, the multilayer capacitor C1 includes a plurality of conductors 15 and 17. For example, the multilayer capacitor C1 includes two conductors 15 and 17. For the sake of explanation, Figs. 2 and 3 show only the internal electrodes 7 and 9 (each of the internal electrodes 7 OM ,9 OM ) and each of the conductors 15, 17 are intentionally illustrated offset from one another in the first direction D1. The conductor 15 is connected to the internal electrode 7 OMand is located in the same layer as the internal electrode 7 OM 1. The conductor 15 includes one end exposed at the corresponding end face 3e. One end of the conductor 15 is exposed at the end face 3e where the internal electrode 9 (end 9e1) is exposed. One end of the conductor 15 is entirely covered by the corresponding electrode portion 5e. The conductor 15 is directly connected to the corresponding electrode portion 5e. The conductor 15 is electrically connected to the corresponding external electrode 5. In the multilayer capacitor C1, the conductor 15 is electrically connected to the external electrode 5 (electrode portion 5e) to which the internal electrode 9 is electrically connected. The conductor 15 is electrically connected to the external electrode 5 to which the internal electrode 7 is not electrically connected. The conductor 17 is connected to the internal electrode 9 OM and is located in the same layer as the internal electrode 9 OM 1. The conductor 17 includes one end exposed at the corresponding end face 3e. One end of the conductor 17 is exposed at the end face 3e where one end of the internal electrode 7 is exposed. One end of the conductor 17 is entirely covered by the corresponding electrode portion 5e. The conductor 17 is directly connected to the corresponding electrode portion 5e. The conductor 17 is electrically connected to the corresponding external electrode 5. In the multilayer capacitor C1, the conductor 17 is electrically connected to the external electrode 5 (electrode portion 5e) to which the internal electrode 7 is electrically connected. The conductor 17 is electrically connected to the external electrode 5 to which the internal electrode 9 is not electrically connected. The conductor 15 faces the internal electrode 9 but does not face the internal electrode 7 in the third direction D3. The conductor 17 faces the internal electrode 7 but does not face the internal electrode 9 in the third direction D3. The conductors 15 and 17 include dummy conductors that are unlikely to contribute to the formation of capacitance.

[0064] When the multilayer capacitor C1 is solder-mounted on an electronic device, there is a risk that an external force acting on the multilayer capacitor C1 from the electronic device will act on the element body 3 through the external electrodes 5. The external force is transmitted from solder fillets formed during solder mounting to the external electrodes 5. The electronic device includes, for example, a circuit board or an electronic component. In the multilayer capacitor C1, the external electrodes 5 include the second electrode layers E2. Therefore, it is difficult for external forces to act on the element body 3 from the external electrodes 5. As a result, the multilayer capacitor C1 suppresses the occurrence of cracks in the element body 3.

[0065] In the multilayer capacitor C1, the auxiliary internal electrode 11 is electrically connected to the external electrode 5 to which the internal electrode 7 is not electrically connected. The electrode portion 11b is located between the second electrode layer E2 included in the electrode portion 5a of the external electrode 5 to which the auxiliary internal electrode 11 is electrically connected, and the internal electrode 7 arranged in the same layer as the auxiliary internal electrode 11. The electrode portion 11b is located between the second electrode layer E2 of the electrode portion 5a and the internal electrode 7 which are not electrically connected to each other. Therefore, an electric field is unlikely to be generated between the second electrode layer E2 of the electrode portion 5a and the internal electrode 7 which are not electrically connected to each other. The auxiliary internal electrode 13 is electrically connected to the external electrode 5 to which the internal electrode 9 is not electrically connected. The electrode portion 13b is located between the second electrode layer E2 included in the electrode portion 5a of the external electrode 5 to which the auxiliary internal electrode 13 is electrically connected, and the internal electrode 9 arranged in the same layer as the auxiliary internal electrode 13. The electrode portion 13b is located between the second electrode layer E2 of the electrode portion 5a and the internal electrode 9 which are not electrically connected to each other. Therefore, an electric field is unlikely to be generated between the second electrode layer E2 of the electrode portion 5a and the internal electrode 9 which are not electrically connected to each other. As a result, the multilayer capacitor C1 suppresses the occurrence of migration.

[0066] In the multilayer capacitor C1, the electrode portion 11a has a width W 11b Larger width W 11a The multilayer capacitor C1 has a width W 11a is the width W 11b In comparison with the configuration having the same structure as that of the multilayer capacitor C1, the physical connection length between the electrode portion 11a and the external electrode 5 is increased. Therefore, the multilayer capacitor C1 improves the connectivity between the external electrode 5 and the auxiliary internal electrode 11. The electrode portion 13a has a width W of the electrode portion 13b. 13b Larger width W13a The multilayer capacitor C1 has a width W 13a is the width W 13b In comparison with the configuration having the same structure as that of the multilayer capacitor C1, the physical connection length between the electrode portion 13a and the external electrode 5 is increased. Therefore, the multilayer capacitor C1 improves the connectivity between the external electrode 5 and the auxiliary internal electrode 13.

[0067] A configuration in which the auxiliary internal electrode 11 is disposed in the same layer as the internal electrode 7 tends to reduce the area of ​​the internal electrode 7. A configuration in which the auxiliary internal electrode 13 is disposed in the same layer as the internal electrode 9 also tends to reduce the area of ​​the internal electrode 9. The reduction in the areas of the internal electrodes 7 and 9 may result in a decrease in capacitance. In contrast, in the multilayer capacitor C1, the internal electrode 7 includes an electrode portion 7a including an end 7e1 and an electrode portion 7b including an end 7e2. The electrode portion 7a has a width W 7a and the interval L 7a1 The electrode portion 7b is spaced from the main surface 3a by a width W 7b and the interval L 7a2 The electrode portion 11b is located between the second electrode layer E2 of the electrode portion 5a to which the internal electrode 7 is not electrically connected and the electrode portion 7b. The internal electrode 9 includes an electrode portion 9a including an end 9e1 and an electrode portion 9b including an end 9e2. The electrode portion 9a has a width W 9a and the interval L 9a1 The electrode portion 9b is spaced from the main surface 3a by a width W 9b and the interval L 9a2 The electrode portion 13b is located between the second electrode layer E2 of the electrode portion 5a to which the internal electrode 9 is not electrically connected and the electrode portion 9b. Therefore, in the multilayer capacitor C1, the reduction in the areas of the internal electrodes 7 and 9 is suppressed.

[0068] In the multilayer capacitor C1, the auxiliary internal electrode 11 and the second electrode layer E2 of the electrode portion 5a, which are electrically connected to each other, have a length L11 from the reference plane PL1 to the end 11e2. aTherefore, it is difficult to reliably generate an electric field between the second electrode layer E2 of the electrode portion 5a and the internal electrode 7, which are not electrically connected to each other. The auxiliary internal electrode 13 and the second electrode layer E2 of the electrode portion 5a, which are electrically connected to each other, have a length L21 from the reference plane PL2 to the end 13e2 that is longer than the length L21 from the reference plane PL2 to the end edge E2e a Therefore, it is difficult for an electric field to be generated reliably between the second electrode layer E2 of the electrode portion 5a and the internal electrode 9, which are not electrically connected to each other. As a result, the multilayer capacitor C1 reliably suppresses the occurrence of migration.

[0069] In the multilayer capacitor C1, when the auxiliary internal electrode 11 and the second electrode layer E2 of the electrode portion 5a electrically connected to the auxiliary internal electrode 11 are viewed in the first direction D1, the electrode portion 11b includes a portion exposed from the second electrode layer E2 of the electrode portion 5a electrically connected to the auxiliary internal electrode 11. Therefore, an electric field is unlikely to be generated reliably between the second electrode layer E2 of the electrode portion 5a and the internal electrode 7, which are not electrically connected to each other. When the auxiliary internal electrode 13 and the second electrode layer E2 of the electrode portion 5a electrically connected to the auxiliary internal electrode 13 are viewed in the first direction D1, the electrode portion 13b includes a portion exposed from the second electrode layer E2 of the electrode portion 5a electrically connected to the auxiliary internal electrode 13. Therefore, it is difficult to reliably generate an electric field between the second electrode layer E2 of the electrode portion 5a and the internal electrode 9, which are not electrically connected to each other. As a result, the multilayer capacitor C1 reliably suppresses the occurrence of migration.

[0070] In the multilayer capacitor C1, the internal electrode 7 and the auxiliary internal electrode 11 arranged in the same layer have a relationship in which the length of the auxiliary internal electrode 11 from the reference plane PL1 is longer than the length from the reference plane PL1 to the internal electrode 7. Therefore, an electric field is unlikely to be generated reliably between the second electrode layer E2 of the electrode portion 5a and the internal electrode 7, which are not electrically connected to each other. The internal electrode 9 and the auxiliary internal electrode 13 arranged in the same layer have a relationship in which the length of the auxiliary internal electrode 13 from the reference plane PL2 is longer than the length from the reference plane PL2 to the internal electrode 9. Therefore, an electric field is unlikely to be generated reliably between the second electrode layer E2 of the electrode portion 5a and the internal electrode 9, which are not electrically connected to each other. As a result, the multilayer capacitor C1 reliably suppresses the occurrence of migration.

[0071] In the multilayer capacitor C1, the internal electrode 7 and the auxiliary internal electrode 11 arranged in the same layer have a relationship in which the length from the reference plane PL1 to the internal electrode 7 is smaller than the length of the auxiliary internal electrode 11 from the reference plane PL1. The internal electrode 9 and the auxiliary internal electrode 13 arranged in the same layer have a relationship in which the length from the reference plane PL2 to the internal electrode 9 is smaller than the length of the auxiliary internal electrode 13 from the reference plane PL2. The multilayer capacitor C1 can increase the length of the internal electrodes 7, 9 in the second direction D2. Therefore, the multilayer capacitor C1 can increase the capacitance.

[0072] In the multilayer capacitor C1, the internal electrode 7 and the second electrode layer E2 of the electrode portion 5a, which are not electrically connected to each other, are such that the length of the internal electrode 7 from the reference plane PL2 is equal to or smaller than the edge E2e of the second electrode layer E2 of the electrode portion 5a, which is not electrically connected to the internal electrode 7. a The internal electrode 9 and the second electrode layer E2 of the electrode portion 5a, which are not electrically connected to each other, have a relationship in which the length of the internal electrode 9 from the reference plane PL1 is greater than the length from the reference plane PL1 to the edge E2e of the second electrode layer E2 of the electrode portion 5a that is not electrically connected to the internal electrode 9. a In the multilayer capacitor C1, the length of the internal electrodes 7, 9 in the second direction D2 can be increased. Therefore, the multilayer capacitor C1 can increase the capacitance.

[0073] In the multilayer capacitor C1, when viewed from the third direction D3, the internal electrode 7 OM 7 inner electrodes OMTherefore, the internal electrodes 7 are not electrically connected to each other. OM An electric field is also unlikely to be generated between the second electrode layer E2 of the electrode portion 5c and the second electrode layer E3 of the electrode portion 5c. When viewed from the third direction D3, the internal electrode 9 OM 9 inner electrodes OM Therefore, the internal electrodes 9 are not electrically connected to each other. OM An electric field is also unlikely to be generated between the second electrode layer E2 of the electrode portion 5c and the second electrode layer E3 of the electrode portion 5c. As a result, the multilayer capacitor C1 suppresses the occurrence of migration even when the electrode portion 5c of the external electrode 5 includes the second electrode layer E2.

[0074] In the multilayer capacitor C1, when the end face 3e and the second electrode layer E2 located on the end face 3e are viewed from the second direction D2, the end face 3e includes a region 3e1 covered by the second electrode layer E2 located on the end face 3e and a region 3e2 exposed from the second electrode layer E2 located on the end face 3e. The region 3e2 is closer to the main surface 3b than the region 3e1. The multilayer capacitor C1 has a lower ESR than a configuration in which the second electrode layer E2 covers the entire end face 3e.

[0075] The second electrode layer E2 includes a plurality of Ag particles, which are more likely to cause migration than, for example, Cu particles. The multilayer capacitor C1 reliably suppresses the occurrence of migration even when the second electrode layer E2 contains a plurality of Ag particles.

[0076] Next, the configuration of a multilayer capacitor according to a modified example of the first embodiment will be described with reference to Figs. 7 and 8. Figs. 7 and 8 are diagrams showing the cross-sectional configuration of a multilayer capacitor according to a modified example of the first embodiment. The multilayer capacitor according to this modified example is generally similar or the same as the multilayer capacitor C1 described above, but this modified example differs from the above embodiment in terms of the configurations of the internal electrodes 7, 9 and the auxiliary internal electrodes 11, 13. Below, the differences between the first embodiment and this modified example will be mainly described.

[0077] In FIG. 7, the lengths L11, L12, L13, L14, and L15 and the intervals L 11a1 , and width W 7a ,W 7b ,W 11b The illustration of the lengths L11, L12, L13, L14, and L15 and the intervals L 11a1 , and width W 7a ,W 7b ,W 11b The definition of is the same as that in the first embodiment described above. In FIG. 8, the lengths L21, L22, L23, L24, and L25 and the intervals L 13a1 , and width W 9a ,W 9b ,W 13b The lengths L21, L22, L23, L24, and L25, and the intervals L 13a1 , and width W 9a ,W 9b ,W 13b The definition of is the same as that in the first embodiment described above.

[0078] As shown in FIG. 7, the interval L 7b2 is the interval L 7b1 The electrode portion 7b is farther away from the main surface 3b in the first direction D1 than the electrode portion 7a. 7b2 For example, in the interval L 7a2 The distance L is approximately equal to 7b2 is the interval L 7a2 may be different from. As shown in FIG. 8, the interval L 9b2 is the interval L 9b1The electrode portion 9b is farther away from the main surface 3b in the first direction D1 than the electrode portion 9a. 9b2 For example, in the interval L 9a2 The distance L is approximately equal to 9b2 is the interval L 9a2 may be different from.

[0079] As shown in FIG. 7, the auxiliary internal electrode 11 includes an electrode portion 11c. The electrode portion 11c and the electrode portion 11b are separated from each other in the first direction D1. The electrode portion 11c is located between the internal electrode 7 located in the same layer and the main surface 3b. The electrode portion 11c is located between the electrode portion 7b included in the internal electrode 7 located in the same layer and the main surface 3b in the first direction D1. The electrode portion 7b is located between the electrode portion 11c and the electrode portion 11b in the first direction D1. The electrode portion 7b and the electrode portion 11c located in the same layer are separated from each other in the first direction D1. The electrode portion 7a and the electrode portion 11c located in the same layer are separated from each other in the second direction D2.

[0080] The electrode portion 11c has a width W 11c It has a width W 11c is, for example, the length of the electrode portion 11c in the first direction D1. 11a is the width W 11c Larger than. Width W 11c For example, the width W 11b Approximately equal to the width W 11c is the width W 11b may be different from. The electrode portion 11c is spaced apart by a distance L 11b1 The distance L is away from the main surface 3b. 11b1 is, for example, the distance in the first direction D1 between the electrode portion 11c and the main surface 3b. 11b1 is the interval L 7b1 may be equal to the interval L 7b1 may be different from. The electrode portion 11c includes an end 11e3 facing the end 11e1 in the second direction D2. The end 11e3 is located within the element body 3. The end 11e3 is closer to the end surface 3e from which the internal electrode 7 is exposed than the end 11e1. A length L16 from the reference plane PL1 to the end 11e3 is, for example, approximately equal to the length L11. The length L16 may be different from the length L11. The length L16 is, for example, greater than the length L12.

[0081] As shown in FIG. 8, the auxiliary internal electrode 13 includes an electrode portion 13c. The electrode portion 13c and the electrode portion 13b are separated from each other in the first direction D1. The electrode portion 13c is located between the internal electrode 9 located in the same layer and the main surface 3b. The electrode portion 13c is located between the electrode portion 9b included in the internal electrode 9 located in the same layer and the main surface 3b in the first direction D1. The electrode portion 9b is located between the electrode portion 13c and the electrode portion 13b in the first direction D1. The electrode portion 9b and the electrode portion 13c located in the same layer are separated from each other in the first direction D1. The electrode portion 9a and the electrode portion 13c located in the same layer are separated from each other in the second direction D2.

[0082] The electrode portion 13c has a width W 13c It has a width W 13c is, for example, the length of the electrode portion 13c in the first direction D1. 13a is the width W 13c Larger than. Width W 13c For example, the width W 13b Approximately equal to the width W 13c is the width W 13b may be different from. The electrode portion 13c is spaced apart by a distance L 13b1 The distance L is away from the main surface 3b. 13b1 is, for example, the distance in the first direction D1 between the electrode portion 13c and the main surface 3b. 13b1 is the interval L 9b1 may be equal to the interval L 9b1 may be different from. The electrode portion 13c includes an end 13e3 that faces the end 13e1 in the second direction D2. The end 13e3 is located inside the element body 3. The end 13e3 is closer to the end face 3e where the internal electrode 9 is exposed than the end 13e1. A length L26 from the reference plane PL2 to the end 13e3 is, for example, approximately equal to the length L21. The length L26 may be different from the length L21. The length L26 is, for example, greater than the length L22.

[0083] In this modification, when the external electrode 5 is formed on the element body 3, the element body 3 does not have directionality in the first direction D1. That is, the external electrode 5 (second electrode layer E2) may be formed on the element body 3 so that the principal surface 3a constitutes the mounting surface, or may be formed on the element body 3 so that the principal surface 3b constitutes the mounting surface. When the principal surface 3b constitutes the mounting surface, the second electrode layer E2 is formed so as to continuously cover only a portion of the principal surface 3b, only a portion of the end surface 3e, and only a portion of each of the pair of side surfaces 3c. Even when the main surface 3b constitutes the mounting surface, the multilayer capacitor C1 suppresses the occurrence of migration.

[0084] Second Embodiment Next, the configuration of the multilayer capacitor C2 in accordance with the second embodiment will be described with reference to Figs. 9 to 13. Fig. 9 is a perspective view of the multilayer capacitor in accordance with the second embodiment. Figs. 10, 11, 12, and 13 are views showing cross-sectional configurations of the multilayer capacitor in accordance with the second embodiment. The multilayer capacitor C2 is generally similar or the same as the modified example of the first embodiment described above, but differs from the modified example of the first embodiment in terms of the configuration of the external electrodes 5. Below, the differences between the multilayer capacitor C2 and the multilayer capacitor C1 in accordance with the first embodiment and the modified example of the first embodiment will be mainly described. In the second embodiment, the electronic component is, for example, a multilayer capacitor C2.

[0085] In FIG. 10, the lengths L11, L12, L13, L14, and L15 and the intervals L 7a1 ,L 7a2 ,L 7b1 ,L 7b2 ,L 11a1 ,L 11b1 , and width W 7a ,W 7b ,W 11a ,W 11b ,W11c The illustration of the lengths L11, L12, L13, L14, and L15 and the intervals L 7a1 ,L 7a2 ,L 7b1 ,L 7b2 ,L 11a1 ,L 11b1 , and width W 7a ,W 7b ,W 11a ,W 11b ,W 11c The definition of is the same as that in the first embodiment and its modified example described above. In FIG. 11, the lengths L21, L22, L23, L24, and L25 and the intervals L 9a1 ,L 9a2 ,L 9b1 ,L 9b2 ,L 13a1 ,L 13b1 , and width W 9a ,W 9b ,W 13a ,W 13b ,W 13c The lengths L21, L22, L23, L24, and L25, and the intervals L 9a1 ,L 9a2 ,L 9b1 ,L 9b2 ,L 13a1 ,L 13b1 , and width W 9a ,W 9b ,W 13a ,W 13b ,W 13c The definition of is the same as that in the first embodiment and its modified example described above.

[0086] Similar to the multilayer capacitor C1, the multilayer capacitor C2 includes a rectangular parallelepiped element body 3, a plurality of external electrodes 5, a plurality of internal electrodes 7, a plurality of internal electrodes 9, a plurality of auxiliary internal electrodes 11, a plurality of auxiliary internal electrodes 13, and a plurality of conductors 15, 17. In the multilayer capacitor C2, the principal surface 3a or the principal surface 3b forms the mounting surface. The external electrode 5 includes a plurality of electrode portions 5a, 5b, 5c, and 5e. Each of the electrode portions 5a, 5c, and 5e includes a first electrode layer E1, a second electrode layer E2, and a third electrode layer E3. In the multilayer capacitor C2, each of the electrode portions 5b also includes a first electrode layer E1, a second electrode layer E2, and a third electrode layer E3.

[0087] The second electrode layer E2 of the electrode portion 5b is disposed on the first electrode layer E1 and the main surface 3b. In the electrode portion 5b, the second electrode layer E2 is formed on the first electrode layer E1 so as to cover the first electrode layer E1 of the electrode portion 5b, and is also formed on the main surface 3b so as to cover a part of the main surface 3b. The second electrode layer E2 of the electrode portion 5b is in contact with the part of the main surface 3b and the entire first electrode layer E1. In the electrode portion 5b, the second electrode layer E2 is in direct contact with the first electrode layer E1 and the main surface 3b. In the electrode portion 5b, the second electrode layer E2 indirectly covers the main surface 3b so that the first electrode layer E1 is located between the second electrode layer E2 and the main surface 3b. The second electrode layer E2 of the electrode portion 5b is located on the main surface 3b. The second electrode layer E2 of the electrode portion 5b is formed on the edge E2e located on the main surface 3b. b Includes. The third electrode layer E3 of the electrode portion 5b is disposed on the second electrode layer E2. In the electrode portion 5b, the third electrode layer E3 covers the second electrode layer E2. In the electrode portion 5b, the third electrode layer E3 is in contact with the second electrode layer E2. In the electrode portion 5b, the third electrode layer E3 is in direct contact with the second electrode layer E2. In the electrode portion 5b, the third electrode layer E3 is not in direct contact with the first electrode layer E1. The third electrode layer E3 of the electrode portion 5b is located on the main surface 3b.

[0088] In the electrode portion 5c, the second electrode layer E2 is formed so as to cover the part of the first electrode layer E1 and the part of the side surface 3c, and to cover another part of the first electrode layer E1 and another part of the side surface 3c. In the electrode portion 5c, the second electrode layer E2 is in direct contact with the other part of the first electrode layer E1 and the other part of the side surface 3c. The second electrode layer E2 of the electrode portion 5c covers the other part of the first electrode layer E1 of the electrode portion 5c. The region included in the side surface 3c and covered by the second electrode layer E2 is located, for example, near the main surface 3a and the end surface 3e, and near the main surface 3b and the end surface 3e. In the electrode portion 5c, the second electrode layer E2 indirectly covers the other part of the side surface 3c so that the first electrode layer E1 is located between the second electrode layer E2 and the side surface 3c. The first electrode layer E1 of the electrode portion 5c is covered with the second electrode layer E2 at the part and the other part, and is exposed from the second electrode layer E2 at the remaining part excluding the part and the other part.

[0089] 9, the electrode portion 5c includes a plurality of regions 5c1, 5c2, and 5c3. For example, the electrode portion 5c includes only three regions 5c1, 5c2, and 5c3. The region 5c3 is located closer to the main surface 3b than the region 5c1. The region 5c3 includes the first electrode layer E1, the second electrode layer E2, and the third electrode layer E3. The region 5c3 includes a region where the first electrode layer E1 is covered with the second electrode layer E2. In the first direction D1, the region 5c1 is located between the region 5c2 and the region 5c3.

[0090] In the electrode portion 5e, the second electrode layer E2 is formed so as to cover the part of the first electrode layer E1 and cover another part of the first electrode layer E1. In the electrode portion 5e, the second electrode layer E2 is in direct contact with the other part of the first electrode layer E1. The second electrode layer E2 of the electrode portion 5e covers the other part of the first electrode layer E1 of the electrode portion 5e. In the electrode portion 5e, the second electrode layer E2 indirectly covers the other part of the end face 3e so that the first electrode layer E1 is located between the second electrode layer E2 and the end face 3e. The other part of the end face 3e is located, for example, closer to the main face 3b of the end face 3e. The first electrode layer E1 of the electrode portion 5e is covered by the second electrode layer E2 in the part and the other part, and is exposed from the second electrode layer E2 in the remaining part excluding the part and the other part.

[0091] The electrode portion 5e includes a plurality of regions 5e1, 5e2, and 5e3. For example, the electrode portion 5e includes only three regions 5e1, 5e2, and 5e3. The region 5e3 is located closer to the main surface 3b than the region 5e1. The region 5e3 includes a first electrode layer E1, a second electrode layer E2, and a third electrode layer E3. The region 5e3 is a region where the first electrode layer E1 is covered with the second electrode layer E2. In the first direction D1, the region 5e1 is located between the region 5e2 and the region 5e3.

[0092] In the multilayer capacitor C2, the second electrode layer E2 continuously covers only a part of the main surface 3a, only a part of the end surface 3e, and only a part of each of the pair of side surfaces 3c, and also continuously covers only a part of the main surface 3b, only another part of the end surface 3e, and only another part of each of the pair of side surfaces 3c. The second electrode layer E2 includes a first portion provided so as to continuously cover only a part of the main surface 3a, only a part of the end surface 3e, and only a part of each of the pair of side surfaces 3c, and a second portion provided so as to continuously cover only a part of the main surface 3b, only another part of the end surface 3e, and only another part of each of the pair of side surfaces 3c. The part of the end surface 3e is located closer to the main surface 3a. The part of each of the side surfaces 3c is located closer to the main surface 3a. The other part of the end surface 3e is located closer to the main surface 3b. The other part of each of the side surfaces 3c is located closer to the main surface 3b. The second electrode layer E2 covers the entirety of one ridge portion 3g, only a part of ridge portion 3i, and only a part of ridge portion 3j, and also covers the entirety of the other ridge portion 3g, only another part of ridge portion 3i, and only another part of ridge portion 3j.

[0093] As shown in FIG. 10, the auxiliary internal electrode 11 and the second electrode layer E2 of the electrode portion 5b, which are electrically connected to each other, have a length L16 that is a distance from the reference plane PL1 to the edge E2e b 14, when the auxiliary internal electrode 11 and the second electrode layer E2 of the electrode portion 5b electrically connected to the auxiliary internal electrode 11 are viewed from the first direction D1, the electrode portion 11c includes a portion exposed from the second electrode layer E2 of the electrode portion 5b electrically connected to the auxiliary internal electrode 11. FIG. 14 is a diagram showing the relationship between the internal electrodes, the auxiliary internal electrode, and the second electrode layer.

[0094] In the multilayer capacitor C2 as well, the internal electrode 7 and the auxiliary internal electrode 11 arranged in the same layer have a relationship in which the length of the auxiliary internal electrode 11 from the reference plane PL1 is greater than the length from the reference plane PL1 to the internal electrode 7. The length of the auxiliary internal electrode 11 from the reference plane PL1 may be defined by, for example, length L16. The internal electrode 7 and the second electrode layer E2 of the electrode portion 5b, which are not electrically connected to each other, are such that the length of the internal electrode 7 from the reference plane PL2 is the distance from the reference plane PL2 to the edge E2e of the second electrode layer E2 of the electrode portion 5b, which is not electrically connected to the internal electrode 7. b The length from the reference plane PL2 to the edge E2e b The length from the reference plane PL2 to the edge E2e b The length in the second direction D2 is defined as the length in the second direction D3.

[0095] As shown in FIG. 11, the auxiliary internal electrode 13 and the second electrode layer E2 of the electrode portion 5b, which are electrically connected to each other, have a length L26 that is a distance from the reference plane PL2 to the edge E2e b 14 , when the auxiliary internal electrode 13 and the second electrode layer E2 of the electrode portion 5b electrically connected to the auxiliary internal electrode 13 are viewed in the first direction D1, the electrode portion 13c includes a portion exposed from the second electrode layer E2 of the electrode portion 5b electrically connected to the auxiliary internal electrode 13.

[0096] In the multilayer capacitor C2 as well, the internal electrode 9 and the auxiliary internal electrode 13 arranged in the same layer have a relationship in which the length of the auxiliary internal electrode 13 from the reference plane PL2 is greater than the length from the reference plane PL2 to the internal electrode 9. The length of the auxiliary internal electrode 13 from the reference plane PL2 may be defined by, for example, length L26. The internal electrode 9 and the second electrode layer E2 of the electrode portion 5b, which are not electrically connected to each other, are such that the length of the internal electrode 9 from the reference plane PL1 is the distance from the reference plane PL1 to the edge E2e of the second electrode layer E2 of the electrode portion 5b, which is not electrically connected to the internal electrode 9. b The length from the reference plane PL1 to the edge E2e is greater than the length from the reference plane PL1 to the edge E2e. b The length from the reference plane PL1 to the edge E2e b The length in the second direction D2 is defined as the length in the second direction D3.

[0097] In the multilayer capacitor C2, the electrode portion 11c is located between the second electrode layer E2 included in the electrode portion 5b of the external electrode 5 to which the auxiliary internal electrode 11 is electrically connected, and the internal electrode 7 arranged in the same layer as the auxiliary internal electrode 11. The electrode portion 11c is located between the second electrode layer E2 of the electrode portion 5b and the internal electrode 7, which are not electrically connected to each other. Therefore, an electric field is unlikely to be generated between the second electrode layer E2 of the electrode portion 5b and the internal electrode 7, which are not electrically connected to each other. The electrode portion 13c is located between the second electrode layer E2 included in the electrode portion 5b of the external electrode 5 to which the auxiliary internal electrode 13 is electrically connected, and the internal electrode 9 arranged in the same layer as the auxiliary internal electrode 13. The electrode portion 13c is located between the second electrode layer E2 of the electrode portion 5b and the internal electrode 9 which are not electrically connected to each other. Therefore, an electric field is unlikely to be generated between the second electrode layer E2 of the electrode portion 5b and the internal electrode 9 which are not electrically connected to each other. As a result, the multilayer capacitor C2 suppresses the occurrence of migration.

[0098] In the multilayer capacitor C2, the electrode portion 11c is located between the electrode portion 7b and the second electrode layer E2 of the electrode portion 5b to which the internal electrode 7 is not electrically connected. The electrode portion 13c is located between the second electrode layer E2 of the electrode portion 5b to which the internal electrode 9 is not electrically connected and the electrode portion 7b. Therefore, in the multilayer capacitor C2, the reduction in the areas of the internal electrodes 7 and 9 is suppressed.

[0099] In the multilayer capacitor C2, the auxiliary internal electrode 11 and the second electrode layer E2 of the electrode portion 5b, which are electrically connected to each other, have a length L16 from the reference plane PL1 to the end 11e3 that is longer than the length L16 from the reference plane PL1 to the end edge E2e b Therefore, it is difficult to reliably generate an electric field between the second electrode layer E2 of the electrode portion 5b and the internal electrode 7, which are not electrically connected to each other. The auxiliary internal electrode 13 and the second electrode layer E2 of the electrode portion 5b, which are electrically connected to each other, have a length L26 from the reference plane PL2 to the end 13e3 that is longer than the length L26 from the reference plane PL2 to the end edge E2eb Therefore, it is difficult to reliably generate an electric field between the second electrode layer E2 of the electrode portion 5b and the internal electrode 9, which are not electrically connected to each other. As a result, the multilayer capacitor C2 reliably suppresses the occurrence of migration.

[0100] In the multilayer capacitor C2, when the auxiliary internal electrode 11 and the second electrode layer E2 of the electrode portion 5b electrically connected to the auxiliary internal electrode 11 are viewed in the first direction D1, the electrode portion 11c includes a portion exposed from the second electrode layer E2 of the electrode portion 5b electrically connected to the auxiliary internal electrode 11. Therefore, an electric field is unlikely to be generated reliably between the second electrode layer E2 of the electrode portion 5b and the internal electrode 7, which are not electrically connected to each other. When the auxiliary internal electrode 13 and the second electrode layer E2 of the electrode portion 5b electrically connected to the auxiliary internal electrode 13 are viewed in the first direction D1, the electrode portion 13c includes a portion exposed from the second electrode layer E2 of the electrode portion 5b electrically connected to the auxiliary internal electrode 13. Therefore, it is difficult to reliably generate an electric field between the second electrode layer E2 of the electrode portion 5b and the internal electrode 9, which are not electrically connected to each other. As a result, the multilayer capacitor C2 reliably suppresses the occurrence of migration.

[0101] In the multilayer capacitor C2 as well, the internal electrode 7 and the auxiliary internal electrode 11 arranged in the same layer have a relationship in which the length of the auxiliary internal electrode 11 from the reference plane PL1 is greater than the length from the reference plane PL1 to the internal electrode 7. The internal electrode 9 and the auxiliary internal electrode 13 arranged in the same layer have a relationship in which the length of the auxiliary internal electrode 13 from the reference plane PL2 is greater than the length from the reference plane PL2 to the internal electrode 9. Therefore, the multilayer capacitor C2 reliably suppresses the occurrence of migration.

[0102] In the multilayer capacitor C2, the internal electrode 7 and the auxiliary internal electrode 11 arranged in the same layer have a relationship in which the length from the reference plane PL1 to the internal electrode 7 is smaller than the length from the reference plane PL1 of the auxiliary internal electrode 11. The internal electrode 9 and the auxiliary internal electrode 13 arranged in the same layer have a relationship in which the length from the reference plane PL2 to the internal electrode 9 is smaller than the length from the reference plane PL2 of the auxiliary internal electrode 13. Therefore, the multilayer capacitor C2 can increase the capacitance.

[0103] In the multilayer capacitor C2, the internal electrode 7 and the second electrode layer E2 of the electrode portion 5b, which are not electrically connected to each other, are such that the length of the internal electrode 7 from the reference plane PL2 is the distance from the reference plane PL2 to the edge E2e b The internal electrode 9 and the second electrode layer E2 of the electrode portion 5b, which are not electrically connected to each other, have a relationship in which the length of the internal electrode 9 from the reference plane PL1 is greater than the length from the reference plane PL1 to the edge E2e of the second electrode layer E2 of the electrode portion 5b, which is not electrically connected to the internal electrode 9. b In the multilayer capacitor C2, the length of the internal electrodes 7, 9 in the second direction D2 can be increased. Therefore, the multilayer capacitor C2 can increase the capacitance.

[0104] Third embodiment Next, the configuration of the multilayer capacitor C3 in accordance with the third embodiment will be described with reference to Figs. 15 to 17. Fig. 15 is a perspective view of the multilayer capacitor in accordance with the third embodiment. Figs. 16 and 17 are views showing a cross-sectional configuration of the multilayer capacitor in accordance with the third embodiment. The multilayer capacitor C3 is generally similar to or the same as the above-mentioned multilayer capacitors C1 and C2, but the multilayer capacitor C3 differs from the above-mentioned multilayer capacitors C1 and C2 in terms of the configuration of the external electrodes 5. Below, the differences between the multilayer capacitor C3 and the multilayer capacitors C1 and C2 will be mainly described. In the third embodiment, the electronic component is, for example, a multilayer capacitor C3.

[0105] In FIG. 16, the lengths L11, L12, L13, L14, L15, L16, and L17 and the intervals L 7a1 ,L 7a2 ,L 7b1 ,L 7b2 ,L 11a1 ,L 11b1 , and width W 7a ,W 7b ,W 11a ,W 11b ,W 11c The illustration of the lengths L11, L12, L13, L14, L15, L16, and L17 and the intervals L 7a1 ,L 7a2 ,L 7b1 ,L 7b2 ,L 11a1 ,L 11b1 , and width W 7a ,W 7b ,W 11a ,W 11b ,W 11c The definition of is the same as that in the first embodiment and its modified example, and the second embodiment described above. In FIG. 17, the lengths L21, L22, L23, L24, L25, L26, and L27 and the intervals L 9a1 ,L 9a2 ,L 9b1 ,L 9b2 ,L 13a1 ,L 13b1 , and width W 9a ,W 9b ,W 13a ,W 13b ,W 13c The lengths L21, L22, L23, L24, L25, L26, and L27, and the intervals L 9a1 ,L 9a2 ,L 9b1 ,L 9b2 ,L 13a1 ,L 13b1 , and width W 9a ,W 9b ,W 13a ,W 13b ,W 13c The definition of is the same as that in the first embodiment and its modified example, and the second embodiment described above.

[0106] The multilayer capacitor C3, like the multilayer capacitors C1 and C2, includes a rectangular parallelepiped element body 3, a plurality of external electrodes 5, a plurality of internal electrodes 7, a plurality of internal electrodes 9, a plurality of auxiliary internal electrodes 11, a plurality of auxiliary internal electrodes 13, and a plurality of conductors 15 and 17. In the multilayer capacitor C3, the principal surface 3a or the principal surface 3b forms the mounting surface. The external electrode 5 includes a plurality of electrode portions 5a, 5b, 5c, and 5e. Each of the electrode portions 5a, 5b, 5c, and 5e includes a first electrode layer E1, a second electrode layer E2, and a third electrode layer E3.

[0107] The second electrode layer E2 of the electrode portion 5c is disposed on the first electrode layer E1 and the side surface 3c. In the electrode portion 5c, the second electrode layer E2 is formed on the first electrode layer E1 so as to cover the first electrode layer E1 of the electrode portion 5c, and is also formed on the side surface 3c so as to cover a portion of the side surface 3c. In the electrode portion 5c, the second electrode layer E2 is in contact with the portion of the side surface 3c and the entire first electrode layer E1. The first electrode layer E1 of the electrode portion 5c is entirely covered by the second electrode layer E2. The first electrode layer E1 of the electrode portion 5c does not include a region exposed from the second electrode layer E2. The second electrode layer E2 of the electrode portion 5e is disposed on the first electrode layer E1. In the electrode portion 5e, the second electrode layer E2 is formed on the first electrode layer E1 so as to cover the first electrode layer E1 of the electrode portion 5e. In the electrode portion 5e, the second electrode layer E2 is in contact with the entire first electrode layer E1. The first electrode layer E1 of the electrode portion 5e is entirely covered by the second electrode layer E2. The first electrode layer E1 of the electrode portion 5e does not include a region exposed from the second electrode layer E2.

[0108] In the multilayer capacitor C3, the electrode portion 11b is also located between the second electrode layer E2 of the electrode portions 5a that are not electrically connected to each other and the internal electrode 7. The electrode portion 11c is located between the second electrode layer E2 of the electrode portions 5b that are not electrically connected to each other and the internal electrode 7. The electrode portion 13b is located between the second electrode layer E2 of the electrode portions 5a that are not electrically connected to each other and the internal electrode 9. The electrode portion 11c is located between the second electrode layer E2 of the electrode portions 5b that are not electrically connected to each other and the internal electrode 9. Therefore, the multilayer capacitor C3, like the multilayer capacitors C1 and C2, suppresses the occurrence of migration.

[0109] Fourth embodiment Next, the configuration of the multilayer capacitor C4 in accordance with the fourth embodiment will be described with reference to Figs. 18 to 21. Fig. 18 is a perspective view of the multilayer capacitor in accordance with the fourth embodiment. Figs. 19, 20, and 21 are views showing a cross-sectional configuration of the multilayer capacitor in accordance with the fourth embodiment. The multilayer capacitor C4 is generally similar to or the same as the multilayer capacitor C1, but the multilayer capacitor C4 differs from the multilayer capacitor C1 in terms of the configurations of the external electrodes 5 and the internal electrodes 7, 9. The following mainly describes the differences between the multilayer capacitor C4 and the multilayer capacitor C1. In the fourth embodiment, the electronic component is, for example, a multilayer capacitor C4.

[0110] In FIG. 19, the lengths L11, L12, L13, L14, and L15 and the intervals L 7a1 ,L 7a2 ,L 7b1 ,L 7b2 ,L 11a1 The lengths L11, L12, L13, L14, and L15 and the intervals L 7a1 ,L 7a2 ,L 7b1 ,L 7b2 ,L 11a1 The definition of is the same as that in the first embodiment described above. In FIG. 20, the lengths L21, L22, L23, L24, and L25 and the intervals L 9a1 ,L9a2 ,L 9b1 ,L 9b2 ,L 13a1 The lengths L21, L22, L23, L24, and L25 and the intervals L 9a1 ,L 9a2 ,L 9b1 ,L 9b2 ,L 13a1 The definition of is the same as that in the first embodiment described above.

[0111] The multilayer capacitor C4 includes a rectangular parallelepiped element body 3, a plurality of external electrodes 5, a plurality of internal electrodes 7, a plurality of internal electrodes 9, a plurality of auxiliary internal electrodes 11, and a plurality of auxiliary internal electrodes 13. The multilayer capacitor C4 does not include a plurality of conductors 15, 17.

[0112] The width of the region 5c2 in the second direction D2 decreases with increasing distance from the main surface 3a (electrode portion 5a). The width of the region 5c2 in the first direction D1 decreases with increasing distance from the end surface 3e (electrode portion 5e). For example, when viewed from the third direction D3, the edge of the region 5c2 is substantially arc-shaped. When viewed from the third direction D3, the region 5c2 has a substantially sector shape. As shown in Figures 19 and 20, the width of the second electrode layer E2 in the second direction D2 decreases with increasing distance from the main surface 3a. The width of the second electrode layer E2 in the first direction D1 decreases with increasing distance from the end surface 3e. When viewed from the third direction D3, the edge of the second electrode layer E2 is substantially arc-shaped. When viewed from the third direction D3, the second electrode layer E2 included in the region 5c2 has a substantially sector shape. The region 5c2 is located on the side surface 3c. When viewed from the third direction D3, the second electrode layer E2 included in the region 5c2 may have a substantially rectangular shape.

[0113] When viewed from the third direction D3, the internal electrode 7 does not overlap the second electrode layer E2 that is included in the region 5c2 and is not electrically connected to the internal electrode 7. When viewed from the third direction D3, the electrode portion 7a does not overlap the second electrode layer E2 that is included in the region 5c2 and is not electrically connected to the internal electrode 7. 7bbecomes smaller toward the end face 3e where the auxiliary internal electrode 11 is exposed. When viewed from the third direction D3, the internal electrode 9 does not overlap the second electrode layer E2 that is included in the region 5c2 and is not electrically connected to the internal electrode 9. When viewed from the third direction D3, the electrode portion 9a does not overlap the second electrode layer E2 that is included in the region 5c2 and is not electrically connected to the internal electrode 9. 9b becomes smaller toward the end face 3e where the auxiliary internal electrode 13 is exposed.

[0114] In the multilayer capacitor C4, the electrode portion 11b is also located between the second electrode layer E2 of the electrode portion 5a and the internal electrode 7, which are not electrically connected to each other. The electrode portion 13b is located between the second electrode layer E2 of the electrode portion 5a and the internal electrode 9, which are not electrically connected to each other. Therefore, the multilayer capacitor C4 suppresses the occurrence of migration, similar to the multilayer capacitor C1.

[0115] In the multilayer capacitor C4, the internal electrode 7 and the second electrode layer E2 included in the region 5c2, which are not electrically connected to each other, do not overlap each other when viewed from the third direction D3. Therefore, an electric field is unlikely to be generated between the internal electrode 7 and the second electrode layer E2 included in the region 5c2, which are not electrically connected to each other. The internal electrode 9 and the second electrode layer E2 included in the region 5c2, which are not electrically connected to each other, do not overlap each other when viewed from the third direction D3. Therefore, an electric field is unlikely to be generated between the internal electrode 9 and the second electrode layer E2 included in the region 5c2, which are not electrically connected to each other. As a result, the multilayer capacitor C4 suppresses the occurrence of migration even when the external electrode 5 includes the second electrode layer E2 in the region 5c2.

[0116] Next, the configurations of multilayer capacitors according to a plurality of modified examples of the fourth embodiment will be described with reference to Figs. 22 to 27. Figs. 22 and 23 are diagrams showing the cross-sectional configuration of a multilayer capacitor according to a first modified example of the fourth embodiment. Figs. 24 and 25 are diagrams showing the cross-sectional configuration of a multilayer capacitor according to a second modified example of the fourth embodiment. Figs. 26 and 27 are diagrams showing the cross-sectional configuration of a multilayer capacitor according to a third modified example of the fourth embodiment. The multilayer capacitors according to the respective modified examples of the fourth embodiment are generally similar or the same as the multilayer capacitor C4, but the multilayer capacitors according to the respective modified examples of the fourth embodiment differ from the multilayer capacitor C4 in terms of the configurations of the auxiliary internal electrodes 11, 13. The following mainly describes the differences between the multilayer capacitors according to the respective modified examples of the fourth embodiment and the multilayer capacitor C4.

[0117] In the first modification of the fourth embodiment, as shown in FIG. 22, the auxiliary internal electrode 11 has a substantially rectangular shape. 11a But the width W 11b The electrode portion 11a has a width W 11b Width W is approximately equal to 11a 23, the auxiliary internal electrode 13 has a substantially rectangular shape. 13a But the width W 13b The electrode portion 13a has a width W 13b Width W is approximately equal to 13a In the first embodiment, the width W 11a But the width W 11b may be approximately equal to the width W 13a But the width W 13b It may be approximately equivalent to.

[0118] In the second modification of the fourth embodiment, as shown in FIG. 11b As shown in FIG. 25, the width W 13b However, the width W becomes smaller as it approaches the electrode portion 13a. 11a But the width W 11b may be approximately equal to the width W13a But the width W 13b It may be approximately equivalent to.

[0119] In a third modification of the fourth embodiment, as shown in FIG. 11b However, the width W 11a However, the width W becomes smaller as it approaches the end surface 3e where the electrode portion 11a is exposed. 13b However, the width W 13a However, it becomes smaller toward the end face 3e where the electrode portion 13a is exposed.

[0120] Fifth embodiment An electronic component device according to a fifth embodiment will be described with reference to Fig. 28. Fig. 28 is a diagram showing a cross-sectional configuration of the electronic component device according to the fifth embodiment.

[0121] The electronic component device includes a multilayer capacitor C1 and an electronic device ED. The electronic device ED is, for example, a circuit board or another electronic component. The multilayer capacitor C1 is solder-mounted to the electronic device ED. The electronic device ED includes a main surface EDa and two pad electrodes PE. Each pad electrode PE is disposed on the main surface EDa. The two pad electrodes PE are spaced apart from each other. The multilayer capacitor C1 is disposed in the electronic device ED such that the main surface 3a and the main surface EDa face each other. When the multilayer capacitor C1 is solder-mounted, molten solder wets and rises up the external electrodes 5 (third electrode layers E3). When the wetted solder solidifies, solder fillets SF are formed on the external electrodes 5. The corresponding external electrodes 5 and pad electrodes PE are connected via the solder fillets SF. The electronic component device may include a multilayer capacitor C2, a multilayer capacitor C3, or a multilayer capacitor C4 instead of the multilayer capacitor C1.

[0122] In this specification, when an element is described as being disposed on another element, the element may be directly disposed on the other element or indirectly disposed on the other element. When an element is indirectly disposed on another element, an intervening element is present between the element and the other element. When an element is directly disposed on the other element, an intervening element is not present between the element and the other element. In this specification, when an element is described as being located on another element, the element may be directly located on the other element or indirectly located on the other element. When an element is indirectly located on another element, an intervening element is present between the element and the other element. When an element is directly located on the other element, an intervening element is not present between the element and the other element. In this specification, when an element is described as covering another element, the element may directly cover the other element or may indirectly cover the other element. When an element indirectly covers another element, an intervening element is present between the element and the other element. When an element directly covers another element, an intervening element is not present between the element and the other element.

[0123] The above describes the embodiments and modifications of the present invention, but the present invention is not necessarily limited to the above-described embodiments and modifications, and various modifications are possible without departing from the spirit of the present invention.

[0124] In the modified example of the first embodiment and the second and third embodiments, the auxiliary internal electrode 11 may include a plurality of electrode portions 11a spaced apart from each other in the first direction D1. That is, the auxiliary internal electrode 11 may include an electrode portion 11a continuing to the electrode portion 11b and an electrode portion 11a continuing to the electrode portion 11c.

[0125] In the above-described embodiments and modifications, a multilayer capacitor has been described as an example of an electronic component, but applicable electronic components are not limited to multilayer capacitors. Applicable electronic components include, for example, multilayer electronic components such as multilayer inductors, multilayer varistors, multilayer piezoelectric actuators, multilayer thermistors, multilayer solid-state battery components, and multilayer composite components, or electronic components other than multilayer electronic components.

[0126] As will be understood from the above-mentioned embodiments and modified examples, this specification includes disclosure of the following aspects. (Appendix 1) an element body having a rectangular parallelepiped shape, the element body including a first main surface constituting a mounting surface, a second main surface opposed to the first main surface in a first direction, a pair of end surfaces opposed to each other in a second direction, and a pair of side surfaces opposed to each other in a third direction; a plurality of external electrodes disposed on both ends of the element body in the second direction; a plurality of internal electrodes arranged side by side in the third direction within the element body and electrically connected to corresponding ones of the plurality of external electrodes; a plurality of auxiliary internal electrodes, each of which is disposed in the same layer as a corresponding internal electrode among the plurality of internal electrodes, and which are electrically connected to the external electrode to which the corresponding internal electrode is not electrically connected; Each of the plurality of external electrodes includes a conductive resin layer located on the first main surface, Each of the plurality of auxiliary internal electrodes is a first electrode portion that is exposed on a corresponding one of the pair of end faces and is electrically and physically connected to the external electrode to which the corresponding internal electrode is not electrically connected; An electronic component comprising: a conductive resin layer included in an external electrode to which the corresponding internal electrode is not electrically connected; and a second electrode portion located between the conductive resin layer and the corresponding internal electrode. (Appendix 2) The electronic component of claim 1, wherein the first electrode portion is exposed on the corresponding end surface with a width greater than a width of the second electrode portion. (Appendix 3) Each of the plurality of internal electrodes is a third electrode portion including a first end exposed at a corresponding one of the pair of end surfaces, the third electrode portion having a first width and spaced apart from the first main surface by a first distance; a fourth electrode portion including a second end facing the first end in the second direction and located within the element body, the fourth electrode portion having a second width smaller than the first width and spaced from the first main surface by a second distance larger than the first distance; 3. The electronic component described in claim 1 or 2, wherein the second electrode portion is located between the conductive resin layer included in the external electrode to which the corresponding internal electrode is not electrically connected, and the fourth electrode portion. (Appendix 4) Each of the plurality of external electrodes further includes a conductive resin layer located on the second main surface, the third electrode portion is spaced from the second major surface by a third distance; the fourth electrode portion is spaced from the second major surface by a fourth spacing that is greater than the third spacing; The electronic component described in Appendix 3, wherein each of the plurality of auxiliary internal electrodes further includes an electrode portion that is included in the external electrode to which the corresponding internal electrode is not electrically connected and is located between the conductive resin layer located on the second main surface and the fourth electrode portion. (Appendix 5) the conductive resin layer includes an edge located on the first main surface, the second electrode portion includes an end that is opposite in the second direction to an end that is included in the first electrode portion and exposed on the corresponding end surface, The electronic component according to any one of Appendices 1 to 4, wherein the auxiliary internal electrode and the conductive resin layer, which are electrically connected to each other, have a relationship in which, with a plane including the corresponding end face as a reference plane, the length from the reference plane to the end included in the second electrode portion is greater than the length from the reference plane to the edge included in the conductive resin layer. (Appendix 6) The electronic component according to any one of appendix 1 to 5, wherein when the auxiliary internal electrode and the conductive resin layer, which are electrically connected to each other, are viewed in a direction perpendicular to the first main surface, the second electrode portion includes a portion exposed from the conductive resin layer. (Appendix 7) The electronic component according to any one of appendices 1 to 6, wherein the internal electrode and the auxiliary internal electrode arranged on the same layer have a relationship in which, with a plane including the corresponding end face at which the auxiliary internal electrode is exposed being taken as a reference plane, the length of the auxiliary internal electrode from the reference plane is greater than the length from the reference plane to the internal electrode. (Appendix 8) the conductive resin layer includes an edge located on the first main surface, The electronic component described in any one of Appendices 1 to 7, wherein the internal electrode and the conductive resin layer, which are not electrically connected to each other, have a relationship in which a length of the internal electrode from a reference plane, which is one of the pair of end faces and includes an end face at which the internal electrode is exposed, is greater than a length from the reference plane to the edge included in the conductive resin layer. (Appendix 9) Each of the plurality of external electrodes further includes a conductive resin layer located on the side surface, the plurality of internal electrodes include an outermost internal electrode adjacent to and electrically connected to the conductive resin layer located on the side surface in the third direction, The electronic component according to any one of appendices 1 to 8, wherein the outermost internal electrode and the conductive resin layer that is not electrically connected to the outermost internal electrode and is located on the side surface do not overlap each other when viewed from a direction perpendicular to the side surface. (Appendix 10) Each of the plurality of external electrodes further includes a conductive resin layer located on the side surface, 9. The electronic component according to any one of claims 1 to 8, wherein the internal electrode and the conductive resin layer located on the side surface, which are not electrically connected to each other, do not overlap each other when viewed in a direction perpendicular to the side surface. (Appendix 11) Each of the plurality of external electrodes further includes a conductive resin layer located on the end surface, 11. The electronic component of claim 1, wherein when the end face and the conductive resin layer located on the end face are viewed in a direction perpendicular to the end face, the end face includes a first region that is covered by the conductive resin layer located on the end face, and a second region that is exposed from the conductive resin layer located on the end face and is closer to the second main surface than the first region. (Appendix 12) 12. The electronic component according to any one of claims 1 to 11, wherein the conductive resin layer contains a plurality of Ag particles. [Explanation of symbols]

[0127] 3...element body, 3a...principal surface, 3b...principal surface, 3c...side surface, 3e...end surface, 3e1, 3e2...area included in the end surface, 5...external electrode, 7, 7 OM ,9,9 OM ...internal electrode, 7a, 7b, 9a, 9b...electrode portion included in the internal electrode, 7e1, 7e2, 9e1, 9e2...end included in the electrode portion of the internal electrode, 11, 13...auxiliary internal electrode, 11a, 11b, 11c, 13a, 13b, 13c...electrode portion, 11e1, 11e2, 11e3, 13e1, 13e2, 13e3...end included in the electrode portion of the auxiliary internal electrode, C1, C2, C3, C4...multilayer capacitor, D1...first direction, D2...second direction, D3...third direction, E2...second electrode layer, E2e a ,E2e b ...edge included in the second electrode layer, PL1...reference surface, PL2...reference surface.

Claims

1. an element body having a rectangular parallelepiped shape, the element body including a first main surface constituting a mounting surface, a second main surface opposed to the first main surface in a first direction, a pair of end surfaces opposed to each other in a second direction, and a pair of side surfaces opposed to each other in a third direction; a plurality of external electrodes disposed on both ends of the element body in the second direction; a plurality of internal electrodes arranged side by side in the third direction within the element body and electrically connected to corresponding ones of the plurality of external electrodes; a plurality of auxiliary internal electrodes, each of which is disposed in the same layer as a corresponding internal electrode among the plurality of internal electrodes, and which are electrically connected to the external electrode to which the corresponding internal electrode is not electrically connected; Each of the plurality of external electrodes includes a conductive resin layer located on the first main surface, Each of the plurality of auxiliary internal electrodes is a first electrode portion that is exposed on a corresponding one of the pair of end faces and is electrically and physically connected to the external electrode to which the corresponding internal electrode is not electrically connected; An electronic component comprising: a conductive resin layer included in an external electrode to which the corresponding internal electrode is not electrically connected; and a second electrode portion located between the conductive resin layer and the corresponding internal electrode.

2. The electronic component according to claim 1 , wherein the first electrode portion is exposed at the corresponding end surface over a width greater than a width of the second electrode portion.

3. Each of the plurality of internal electrodes is a third electrode portion including a first end exposed at a corresponding one of the pair of end surfaces, the third electrode portion having a first width and spaced apart from the first main surface by a first distance; a fourth electrode portion including a second end facing the first end in the second direction and located within the element body, the fourth electrode portion having a second width smaller than the first width and spaced from the first main surface by a second distance larger than the first distance; 2. The electronic component according to claim 1, wherein the second electrode portion is located between the conductive resin layer included in the external electrode to which the corresponding internal electrode is not electrically connected and the fourth electrode portion.

4. Each of the plurality of external electrodes further includes a conductive resin layer located on the second main surface, the third electrode portion is spaced from the second major surface by a third distance; the fourth electrode portion is spaced from the second major surface by a fourth spacing that is greater than the third spacing; 4. The electronic component according to claim 3, wherein each of the plurality of auxiliary internal electrodes further includes an electrode portion that is included in the external electrode to which the corresponding internal electrode is not electrically connected and that is located between the conductive resin layer located on the second main surface and the fourth electrode portion.

5. the conductive resin layer includes an edge located on the first main surface, the second electrode portion includes an end that is opposite in the second direction to an end that is included in the first electrode portion and exposed on the corresponding end surface, 2. The electronic component according to claim 1, wherein the auxiliary internal electrode and the conductive resin layer, which are electrically connected to each other, have a relationship in which, with a plane including the corresponding end face as a reference plane, the length from the reference plane to the end included in the second electrode portion is greater than the length from the reference plane to the edge included in the conductive resin layer.

6. 2. The electronic component according to claim 1, wherein when the auxiliary internal electrode and the conductive resin layer, which are electrically connected to each other, are viewed in a direction perpendicular to the first main surface, the second electrode portion includes a portion exposed from the conductive resin layer.

7. 2. The electronic component according to claim 1, wherein the internal electrode and the auxiliary internal electrode arranged on the same layer have a relationship in which, with a plane including the corresponding end face at which the auxiliary internal electrode is exposed being taken as a reference plane, the length of the auxiliary internal electrode from the reference plane is greater than the length from the reference plane to the internal electrode.

8. the conductive resin layer includes an edge located on the first main surface, 2. The electronic component according to claim 1, wherein the internal electrode and the conductive resin layer, which are not electrically connected to each other, have a relationship in which a length of the internal electrode from a reference plane, which is one of the pair of end faces and includes an end face at which the internal electrode is exposed, is greater than a length from the reference plane to the edge included in the conductive resin layer.

9. Each of the plurality of external electrodes further includes a conductive resin layer located on the side surface, the plurality of internal electrodes include an outermost internal electrode adjacent to and electrically connected to the conductive resin layer located on the side surface in the third direction, 2. The electronic component according to claim 1, wherein the outermost internal electrode and the conductive resin layer that is not electrically connected to the outermost internal electrode and is located on the side surface do not overlap each other when viewed in a direction perpendicular to the side surface.

10. Each of the plurality of external electrodes further includes a conductive resin layer located on the side surface, 2. The electronic component according to claim 1, wherein the internal electrode and the conductive resin layer located on the side surface, which are not electrically connected to each other, do not overlap each other when viewed in a direction perpendicular to the side surface.

11. Each of the plurality of external electrodes further includes a conductive resin layer located on the end surface, 2. The electronic component according to claim 1, wherein, when the end face and the conductive resin layer located on the end face are viewed in a direction perpendicular to the end face, the end face includes a first region that is covered by the conductive resin layer located on the end face, and a second region that is exposed from the conductive resin layer located on the end face and is closer to the second main surface than the first region.

12. The electronic component according to claim 1 , wherein the conductive resin layer contains a plurality of Ag particles.

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