Multilayer ceramic capacitors

Abstract

To provide a multi-terminal multilayer ceramic capacitor having three or more terminals, for which it is easy to apply a technique of disposing a side gap part at a later time.SOLUTION: The multilayer ceramic capacitor comprises a laminate in which a first dielectric layer and a second dielectric layer are alternately laminated, the laminate having two principal surfaces, two side surfaces and two end surfaces. The laminate includes an inner layer part in which a first internal electrode and a second internal electrode are alternately laminated via the dielectric layer, outer layers which are arranged so as to sandwich the inner layer in the laminate direction and are composed of a dielectric material, and side gap parts which are arranged so as to sandwich the inner layer and outer layers in the width direction, and is provided with a first external electrode connected to the first internal electrode and a second external electrode connected to the second internal electrode. The first external electrode includes a principal surface arranged electrode part which is disposed on at one of the two principal surfaces, and a side surface arranged electrode part which connects to at least one side surface side end of the first inner electrode and is covered with the side gap part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a multilayer ceramic capacitor. [Background technology]

[0002] Patent Document 1 discloses a multi-terminal multilayer ceramic capacitor, in which a side gap portion is arranged on the side surface of the multilayer ceramic capacitor as a protective member to prevent the side end portions of the internal electrodes from being exposed. 2. Description of the Related Art With the recent trend toward smaller electronic devices, there is a demand for smaller multi-terminal multilayer ceramic capacitors mounted on electronic devices. Patent Document 2 discloses a method of forming a side gap later as one of the methods for miniaturizing a multilayer ceramic capacitor. In this method, a laminate is fabricated with internal electrodes exposed on the side surfaces, and a side gap is then formed on the exposed side surfaces. This method makes it possible to thin the side gap, facilitating miniaturization of the multilayer ceramic capacitor. However, in multilayer ceramic capacitors that require external electrodes to be disposed on the side surfaces, such as multilayer ceramic capacitors with three or more terminals, it is difficult to use the technique of later arranging the side gap portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-86118 [Patent Document 2] Japanese Patent Application Publication No. 2020-136298 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a multi-terminal multilayer ceramic capacitor with three or more terminals to which a technique of later arranging side gap portions can be easily applied. [Means for solving the problem]

[0005] The multilayer ceramic capacitor according to the present invention comprises: a first dielectric layer on which a first internal electrode is formed; a second dielectric layer on which a second internal electrode is formed; a laminate in which the first dielectric layers and the second dielectric layers are alternately laminated, The laminate has two main surfaces, two side surfaces, and two end surfaces, the laminate has an inner layer portion in which the first inner electrodes and the second inner electrodes are alternately stacked with the dielectric layers interposed therebetween, outer layer portions arranged to sandwich the inner layer portion in the stacking direction and made of a dielectric material, and side gap portions arranged to sandwich the inner layer portion and the outer layer portion in the width direction, a first outer electrode connected to the first inner electrode; a second outer electrode connected to the second inner electrode, The first external electrode is a main surface-arranged electrode portion arranged on at least one of the two main surfaces; a side surface disposed electrode portion connected to at least one side surface end of the first internal electrode and covered by a side gap portion, It is a multilayer ceramic capacitor. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide a multi-terminal multilayer ceramic capacitor with three or more terminals to which a technique of later arranging side gap portions can be easily applied. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing a multilayer ceramic capacitor according to a first embodiment. [Figure 2] 2 is a cross-sectional view (LT cross-section) of the multilayer ceramic capacitor shown in FIG. 1. [Figure 3]2 is a cross-sectional view (WT cross section) taken along line II-II of the multilayer ceramic capacitor shown in FIG. [Figure 4] 3A and 3B are cross-sectional views (LW cross-section) taken along line III-III of the multilayer ceramic capacitor shown in FIG. 1, where (a) shows a first internal electrode and (b) shows a second internal electrode. [Figure 5] 1 is a perspective view showing a state before a side gap portion is arranged in a multilayer ceramic capacitor according to a first embodiment. FIG. [Figure 6] 1 is a perspective view showing a state before external electrodes and side gap portions are arranged in a multilayer ceramic capacitor according to a first embodiment. [Figure 7] 5A and 5B are diagrams showing internal electrodes of a second embodiment, in which (a) shows a first internal electrode in plan view, and (b) shows a second internal electrode in plan view. [Figure 8] FIG. 10 is a perspective view showing a state before external electrodes and side gap portions are arranged in a multilayer ceramic capacitor according to a second embodiment. [Figure 9] FIG. 10 is a perspective view showing a state before a side gap portion is arranged in a multilayer ceramic capacitor according to a second embodiment. [Figure 10] FIG. 2 is a perspective view showing a multilayer ceramic capacitor according to a second embodiment. [Figure 11] 10A and 10B are views showing internal electrodes of a third embodiment, in which (a) shows a first internal electrode in plan view, and (b) shows a second internal electrode in plan view. [Figure 12] FIG. 10 is a perspective view showing a state before external electrodes and side gap portions are arranged in a multilayer ceramic capacitor according to a third embodiment. [Figure 13] FIG. 10 is a perspective view showing a state before a side gap portion is arranged in a multilayer ceramic capacitor according to a third embodiment. [Figure 14] FIG. 10 is a perspective view showing a multilayer ceramic capacitor according to a third embodiment. [Figure 15] 10A and 10B are views showing internal electrodes of a fourth embodiment, in which (a) shows a first internal electrode in plan view, and (b) shows a second internal electrode in plan view. [Figure 16]FIG. 10 is a perspective view showing a state before external electrodes and side gap portions are arranged in a multilayer ceramic capacitor according to a fourth embodiment. [Figure 17] FIG. 10 is a perspective view showing a state before a side gap portion is arranged in a multilayer ceramic capacitor according to a fourth embodiment. [Figure 18] FIG. 10 is a perspective view showing a multilayer ceramic capacitor according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] An example of an embodiment of the present invention will be described below with reference to the accompanying drawings, in which the same or equivalent parts are designated by the same reference numerals.

[0009] <Overview of Multilayer Ceramic Capacitor (First Aspect)> A multilayer ceramic capacitor 1 according to a first aspect of an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a multilayer ceramic capacitor 1 according to a first embodiment of the present invention. 2 is a cross-sectional view of the multilayer ceramic capacitor 1 shown in FIG. 1 taken along line II, FIG. 3 is a cross-sectional view of the multilayer ceramic capacitor 1 shown in FIG. 1 taken along line II-II, and FIG. 4 is a cross-sectional view of the multilayer ceramic capacitor 1 shown in FIG. 1 taken along line III-III. FIG. 5 is a perspective view showing the multilayer ceramic capacitor 1 of the first embodiment in a state before the side gap portion 50 is arranged. FIG. 6 is a perspective view showing the multilayer ceramic capacitor 1 of the first embodiment in a state before the external electrodes 40 and the side gap portions 50 are arranged. 1 to 4 includes a laminate 10 and external electrodes 40. The external electrodes 40 include a first external electrode 41 and a second external electrode 42. The laminate 10 also includes a side gap portion 50.

[0010] <Direction definition> In each figure, an XYZ Cartesian coordinate system is shown as necessary. The X direction is the length direction L of the multilayer ceramic capacitor 1 and the laminate 10, the Y direction is the width direction W of the multilayer ceramic capacitor 1 and the laminate 10, and the Z direction is the lamination direction T of the multilayer ceramic capacitor 1 and the laminate 10. Therefore, the cross section shown in FIG. 2 is also referred to as an LT cross section, the cross section shown in FIG. 3 is also referred to as a WT cross section, and the cross section shown in FIG. 4 is also referred to as an LW cross section. The length direction L, width direction W, and stacking direction T do not necessarily have to be perpendicular to each other, and may intersect each other.

[0011] <Laminate> The laminate 10 has an approximately rectangular parallelepiped shape and has a first main surface TS1 and a second main surface TS2 facing in the stacking direction T, a first side surface WS1 and a second side surface WS2 facing in the width direction W, and a first end surface LS1 and a second end surface LS2 facing in the length direction L. The corners and ridges of the laminate 10 may be rounded. A corner is a portion where three surfaces of the laminate 10 intersect, and a ridge is a portion where two surfaces of the laminate 10 intersect. As shown in FIGS. 2 and 3, the laminate 10 has a plurality of dielectric layers 20 and a plurality of internal electrodes 30 stacked in a stacking direction T. The laminate 10 also has, in the stacking direction T, an inner layer portion 100, and a first outer layer portion 101 and a second outer layer portion 102 arranged so as to sandwich the inner layer portion 100 therebetween.

[0012] <Inner layer> The inner layer portion 100 includes a portion of the plurality of dielectric layers 20 and a plurality of internal electrodes 30. In the inner layer portion 100, the plurality of internal electrodes 30 are arranged facing each other with the dielectric layer 20 interposed therebetween. The inner layer portion 100 is a portion that generates capacitance and essentially functions as a capacitor. For this reason, the inner layer portion 100 is also referred to as an effective region.

[0013] <Outer layer> The first outer layer portion 101 is disposed on the first main surface TS1 side of the laminate 10, and the second outer layer portion 102 is disposed on the second main surface TS2 side of the laminate 10. More specifically, the first outer layer portion 101 is arranged between the internal electrode 30 among the multiple internal electrodes 30 that is closest to the first main surface TS1 and the first main surface TS1, and the second outer layer portion 102 is arranged between the internal electrode 30 among the multiple internal electrodes 30 that is closest to the second main surface TS2 and the second main surface TS2. The first outer layer portion 101 and the second outer layer portion 102 do not include the internal electrode 30, but each include a portion of the plurality of dielectric layers 20 other than the portion for the internal layer portion 100. The first outer layer portion 101 and the second outer layer portion 102 function as protective layers for the inner layer portion 100 .

[0014] <Length direction L> 2, the laminate 10 has, in the longitudinal direction L, an electrode facing portion L30 where the internal electrodes 30 face each other, a first end face gap LG1, and a second end face gap LG2. The first end face gap LG1 is located between the electrode facing portion L30 and the first end face LS1, and the second end face gap LG2 is located between the electrode facing portion L30 and the second end face LS2. The first end face side gap LG1 and the second end face side gap LG2 are portions where the internal electrodes 30 do not face each other in the stacking direction T. The first end face side gap LG1 and the second end face side gap LG2 are also referred to as L gaps.

[0015] <Cross-sectional structure in the width direction W> Next, the cross-sectional structure of the laminate 10 in the width direction W will be described with reference to FIG. As shown in FIG. 3, the laminate 10 has, in the width direction W, an electrode facing portion W30 where the internal electrodes 30 face each other, and a first side surface gap portion WG1 located between the electrode facing portion W30 and the first side surface WS1. The first side surface gap WG1 is a portion where the internal electrodes 30 do not face each other in the stacking direction T. The first side surface gap WG1 is also called a W gap.

[0016] <Laminate dimensions> The dimensions of the laminate 10 described above are not particularly limited, but it is preferable that, for example, the length in the longitudinal direction L is 1.55 mm or more and 1.65 mm or less, the width in the width direction W is 0.75 mm or more and 0.85 mm or less, and the thickness in the stacking direction T is 0.75 mm or more and 0.85 mm or less.

[0017] <External view of multilayer ceramic capacitor> The appearance of the multilayer ceramic capacitor 1 of the first embodiment is as follows. The laminate 10 included in the multilayer ceramic capacitor 1 has a substantially rectangular parallelepiped shape. The dielectric layers 20 and parts of the external electrodes 40 are exposed from the first main surface TS1 and the second main surface TS2 of the laminate 10. The external electrodes 40 are disposed on the first end surface LS1 and the second end surface LS2 of the laminate 10. Side gap portions 50 are disposed on the first side surface WS1 and the second side surface WS2 of the laminate 10. The external electrodes 40 partially exposed from the first main surface TS1 and the second main surface TS2 and the external electrodes 40 disposed on the first end surface LS1 and the second end surface LS2 are connected to different internal electrodes 30.

[0018] <External electrode> The external electrode 40 includes a first external electrode 41 and a second external electrode 42. The first external electrode 41 is the external electrode 40 connected to the first internal electrode 31. On the other hand, the second external electrode 42 is the external electrode 40 connected to the second internal electrode 32. The external electrode 40, which is partially exposed from the first main surface TS1 and the second main surface TS2, is a first external electrode 41. On the other hand, the external electrode 40 disposed on the first end surface LS1 and the second end surface LS2 is a second external electrode 42. The first external electrode 41 is connected to, for example, a wiring having a GND potential, and the second external electrode 42 is connected to, for example, a wiring having a signal potential.

[0019] <Side gap section> The side gap portion 50 is a dielectric layer disposed on the first side surface WS1 and the second side surface WS2 of the multilayer body 10 to prevent the internal electrodes 30 from being exposed from the first side surface WS1 and the second side surface WS2. The side gap portion 50 is disposed on the first side surface WS1 so as to cover the first external electrode 41 disposed on the first side surface WS1. Therefore, the first external electrode 41 is not exposed from the first side surface WS1. 3, the side gap portion 50 includes an inner side gap layer 501 and an outer side gap layer 502. The inner side gap layer 501 and the outer side gap layer 502 are mainly made of a dielectric material. The amount of Si contained in the dielectric material differs between the inner side gap layer 501 and the outer side gap layer 502.

[0020] The components and structure of the multilayer ceramic capacitor 1 will be described below. <First internal electrode and second internal electrode> The internal electrodes 30 include a plurality of first internal electrodes 31 and a plurality of second internal electrodes 32. The first internal electrodes 31 and the plurality of second internal electrodes 32 are alternately arranged in the stacking direction T with the dielectric layers 20 interposed therebetween. The internal electrode 30 is formed on one surface of the dielectric layer 20. The dielectric layer 20 on which the first internal electrode 31 is formed is referred to as the first dielectric layer. Similarly, the dielectric layer 20 on which the second internal electrode 32 is formed is referred to as the second dielectric layer. Figures 4(a) and 4(b) are both cross-sectional views of the multilayer ceramic capacitor shown in Figure 1 taken along line III-III. Figure 4(a) is a cross-sectional view of a position where the first internal electrode 31 is arranged in the stacking direction T. On the other hand, Figure 4(b) is a cross-sectional view of a position where the second internal electrode 32 is arranged in the stacking direction T. Fig. 4(a) shows the first internal electrode 31 in a plan view. Meanwhile, Fig. 4(b) shows the second internal electrode 32 in a plan view. Here, a plan view refers to viewing the laminate 10 in the stacking direction T. As shown in FIG. 4, the first internal electrode 31 and the second internal electrode 32 have different shapes in plan view.

[0021] <Main electrode and extraction electrode> The internal electrode 30 includes a main electrode portion 60 and an extraction electrode portion 70 . Here, the main electrode portion 60 of the first internal electrode 31 is referred to as the first main electrode portion 61, and the lead electrode portion 70 of the first internal electrode 31 is referred to as the first lead electrode portion 71. Similarly, the main electrode portion 60 of the second internal electrode 32 is referred to as the second main electrode portion 62, and the lead electrode portion 70 of the second internal electrode 32 is referred to as the second lead electrode portion 72.

[0022] <Output electrode part> The extraction electrode portion 70 is a portion of the internal electrode 30 that does not face, in the stacking direction T, other internal electrodes 30 that are connected to different external electrodes 40 . If the internal electrode 30 extends from that portion in the direction of the side surface or end surface that the portion contacts, the portion where the internal electrode 30 exists is also included in the extracted electrode portion 70 . Specifically, the first extracted electrode portion 71 is a portion of the first internal electrode 31 that does not face the second internal electrode 32 in the stacking direction T. Similarly, the second extracted electrode portion 72 is a portion of the second internal electrode 32 that does not face the first internal electrode 31 in the stacking direction T.

[0023] <Main electrode section> The main electrode portion 60 is the portion of the internal electrode 30 other than the lead electrode portion 70 . Specifically, the first main electrode portion 61 is the portion of the first internal electrode 31 other than the first extracted electrode portion 71. Similarly, the second main electrode portion 62 is the portion of the second internal electrode 32 other than the second extracted electrode portion 72.

[0024] <Facing and non-facing parts of extraction electrode> The extraction electrode portion 70 includes a facing portion and a non-facing portion. Here, the facing portion of the first extracted electrode portion 71 is referred to as a first extracted electrode facing portion 71F, and the non-facing portion of the first extracted electrode portion 71 is referred to as a first extracted electrode non-facing portion 71NF. Similarly, the facing portion of the second extracted electrode portion 72 is referred to as a second extracted electrode facing portion 72F, and the non-facing portion of the second extracted electrode portion 72 is referred to as a second extracted electrode non-facing portion 72NF.

[0025] <Facing part of extraction electrode> The opposing portion of the lead electrode portion 70 is a portion of the lead electrode portion 70 that faces, in the stacking direction T, another lead electrode portion 70 that is connected to a different external electrode 40 . Specifically, the first extracted electrode facing portion 71F is a portion of the first extracted electrode portion 71 that faces the second extracted electrode portion 72 in the stacking direction T. Similarly, the second extracted electrode facing portion 72F is a portion of the second extracted electrode portion 72 that faces the first extracted electrode portion 71 in the stacking direction T. The opposing portion is a portion that can generate capacitance.

[0026] <Non-facing portion of extraction electrode> The non-opposing portion of the extracted electrode portion 70 is a portion of the extracted electrode portion 70 other than the opposing portion of the extracted electrode portion 70. Specifically, the first extracted electrode non-facing portion 71NF is a portion of the first extracted electrode portion 71 other than the first extracted electrode facing portion 71F. Similarly, the second extracted electrode non-facing portion 72NF is a portion of the second extracted electrode portion 72 other than the second extracted electrode facing portion 72F.

[0027] <Facing and non-facing parts of internal electrodes> The main electrode portion 60 faces another internal electrode 30 connected to a different external electrode 40 in the stacking direction T. Therefore, unlike the extraction electrode portion 70, the entire main electrode portion 60 is the facing portion. As a result, the facing portion of the internal electrode 30 is the combined portion of the main electrode portion 60 and the facing portion of the lead electrode portion 70. The non-facing portion of the internal electrode 30 is the same portion as the non-facing portion of the lead electrode portion 70.

[0028] <General shape of internal electrode> The internal electrode 30 has a shape that is substantially the same as the shape of the laminate 10 when viewed from above. That is, the internal electrode 30 has a substantially rectangular shape. However, the shape of the laminate 10 when viewed from above and the shape of the internal electrode 30 when viewed from above do not completely match.

[0029] <Notch> When comparing the outer shape of the laminate 10 in a plan view with the outer shape of the internal electrode 30 in a plan view, the portion of the outer shape of the internal electrode 30 that is missing from the outer shape of the laminate 10 is defined as a cutout portion 80. The outer shape of the internal electrode 30 in plan view may be simply referred to as the outer shape of the internal electrode 30.

[0030] The internal electrodes 30 will be described below in the order of the first internal electrode 31 and the second internal electrode 32 with reference to FIG. <Outline of the first internal electrode> 4(a), the outer shape of the first internal electrode 31 has a notch 80 on the end surface. On the other hand, the outer shape of the first internal electrode 31 does not have a notch 80 on the side surface. The first internal electrode 31 also has an extraction electrode portion 70 on the side surface.

[0031] <End face notch> The outer shape of the first internal electrode 31 has cutout portions 80 at positions corresponding to the first end face LS1 and the second end face LS2. This cutout portion 80 is referred to as a first end surface cutout portion 81L. The first end surface cutout portion 81L extends from one end to the other end at a position corresponding to the first end surface LS1 and a position corresponding to the second end surface LS2. On the other hand, the outer shape of the first internal electrode 31 does not have the notch 80 at the position corresponding to the first side surface WS1 and the position corresponding to the second side surface WS2. The position corresponding to the first end face LS1 means a position that, when stacked to form a part of the laminate 10, constitutes a part of the first end face LS1 of the laminate 10. Similar expressions are used for the other faces.

[0032] <Extraction electrode part on the side> The first internal electrode 31 has a lead electrode portion 70 at a position corresponding to the first side surface WS1. This extracted electrode portion 70 is referred to as a first extracted electrode side portion 71W. The first extracted electrode side portion 71W corresponds to a portion of the first internal electrode 31 that faces, in the stacking direction T, a second cutout portion 82W of the second internal electrode 32, which will be described later. The side surface first extended electrode portion 71W is disposed in the center portion at a position corresponding to the first side surface WS1.

[0033] The arrangement of the end faces and side faces of the first internal electrode 31 in the first embodiment will be summarized. <Arrangement order on the end face> In the first internal electrode 31, first end face cutout portions 81L are arranged from one end to the other at positions corresponding to the first end face LS1 and the second end face LS2. Therefore, the first extracted electrode portion 71 is not arranged at the positions corresponding to the first end face LS1 and the second end face LS2.

[0034] <Arrangement order on the side> In the first internal electrode 31, at a position corresponding to the first side surface WS1, from one end to the other, an end surface first cutout portion 81L, a first main electrode portion 61, a side surface first extracted electrode portion 71W, a first main electrode portion 61, and an end surface first cutout portion 81L are arranged in that order. On the other hand, in the first internal electrode 31, at a position corresponding to the first side surface WS2, from one end to the other end, a first end surface cutout portion 81L, a first main electrode portion 61, and a first end surface cutout portion 81L are arranged in that order.

[0035] <Second internal electrode> Next, the second internal electrode will be described with reference to FIG. 4(b). The outer shape of the second internal electrode 32 has a notch 80, similar to the first internal electrode 31. However, the position of the notch 80 differs from that of the first internal electrode 31. The second internal electrode 32 also has lead-out electrode portions 70 on the end faces and side faces.

[0036] First, the end face will be described. <End face notch> The outer shape of the second internal electrode 32 has cutout portions 80 at positions corresponding to the first end face LS1 and the second end face LS2. These cutouts 80 are referred to as second end face cutouts 82L. There are four second end face cutouts 82L in total, one at each end portion corresponding to the first end face LS1 and one at each end portion corresponding to the second end face LS2.

[0037] <Extraction electrode part on end surface> The second internal electrode 32 has lead-out electrode portions 70 at positions corresponding to the first end face LS1 and the second end face LS2. This extracted electrode portion 70 is referred to as an end face second extracted electrode portion 72L. Two end face second extracted electrode portions 72L are arranged, one at the center corresponding to the first end face LS1 and the other at the center corresponding to the second end face LS2.

[0038] Next, the side surfaces will be described. <Side cutout> The outer shape of the second internal electrode 32 has a notch 80 at a position corresponding to the first side surface WS1. This cutout portion 80 is referred to as a second side cutout portion 82W. The second side cutout portion 82W is located in the center of a position corresponding to the first side surface WS1.

[0039] <Extraction electrode part on the side> The second internal electrode 32 does not have an extraction electrode portion 70 at a position corresponding to the first side surface WS1 or the position corresponding to the second side surface WS2. This is because the second internal electrode 32 on the side surface faces the first internal electrode 31 in the stacking direction T.

[0040] The arrangement of the end faces and side faces of the second internal electrode 32 in the first embodiment will be summarized. <Arrangement order on the end face> In the second internal electrode 32, at a position corresponding to the first end face LS1 and a position corresponding to the second end face LS2, an end face second cutout portion 82L, an end face second extracted electrode portion 72L, and an end face second cutout portion 82L are arranged in that order from one end to the other end.

[0041] <Arrangement order on the side> In the second internal electrode 32, at a position corresponding to the first side surface WS1, from one end to the other, an end surface second cutout portion 82L, a second main electrode portion 62, a side surface second cutout portion 82W, a second main electrode portion 62, and an end surface second cutout portion 82L are arranged in that order. On the other hand, at a position corresponding to the second side surface WS2, an end surface second cutout portion 82L, a second main electrode portion 62, and an end surface second cutout portion 82L are arranged in that order from one end to the other end.

[0042] <Each surface of the laminate> The configuration of the laminate 10 will be described with reference to Fig. 5. By laminating the above-described first internal electrodes 31 and second internal electrodes 32, the laminate 10 has a surface as shown in Fig. 5. The effective portion 110 is exposed from the first side surface WS1 of the laminate 10, and the lead-out portion 120 is disposed on the first side surface WS1. Further, the laminate 10 has a first end surface LS1 and a second end surface LS2, on which a lead-out portion 120 is disposed. Furthermore, a first external electrode 41 is disposed on the first side surface WS1, the first main surface TS1, and the second main surface TS2 of the laminate 10. The first external electrode 41 is disposed on the first side surface WS1 so as to contact the lead portion 120.

[0043] <Valid part> First, the above-mentioned effective portion will be described. The effective portion 110 is a portion where the first internal electrode 31 and the second internal electrode 32 face each other in the stacking direction T. A capacitance is generated in the effective portion 110. This allows the multilayer ceramic capacitor 1 to function as a capacitor. The effective portion 110 corresponds to the facing portion described above. On the first side surface WS1 and the second side surface WS2, the first internal electrode 31 and the second internal electrode 32 face each other in the stacking direction T. This facing portion becomes the effective portion 110. This effective portion 110 is exposed from the first side surface WS1 and the second side surface. However, the positions of the exposed valid portions 110 differ between the first side surface WS1 and the second side surface WS2. On the first side surface WS1, one valid portion 110 is exposed at each of the two end portions in the longitudinal direction L. This is because the second side cutout portion 83W is disposed on the first side surface WS1. On the other hand, on the second side surface WS2, the effective portion 110 is exposed continuously from one end to the other end in the length direction L. This is because the cutout portion 80 is not arranged on the second side surface WS2.

[0044] <Drawer section> The lead-out portion 120 is a portion that allows selective connection between the internal electrode 30 and the external electrode 40. Here, selective connection means that the external electrode 40 is connected to either the first internal electrode 31 or the second internal electrode 32, but not to the other. The portion that allows selective connection between the first internal electrode 31 and the first external electrode 41 is referred to as a first lead portion 121. The portion that allows selective connection between the second internal electrode 32 and the second external electrode 42 is referred to as a second lead portion 122. In the multilayer ceramic capacitor 1 of this embodiment, the first lead portion 121 is disposed on the first side surface WS1, and the second lead portion 122 is disposed on the first end surface LS1 and the second end surface LS2.

[0045] <Side edge> The side end portion is a portion of the internal electrode 30 exposed on the surface of the laminate 10 as a result of the internal electrode 30 being drawn in a direction corresponding to the end face or side face of the laminate 10 . The portion of the effective portion 110 exposed from the end face or side surface corresponds to at least a part of the side edge. The drawn-out portion 120 also corresponds to at least a part of the side edge. The side end portion on the end face is referred to as the end face side end portion, and the side end portion on the side face is referred to as the side face side end portion.

[0046] <1st drawer section> Only the first internal electrode 31 is exposed from the first lead portion 121 arranged on the first side surface WS1, and the second internal electrode 32 is not exposed. This is because the second side surface cutout portion 82W is arranged at a position on the outer shape of the second internal electrode 32 corresponding to the first lead portion 121.

[0047] <First external electrode> The first external electrode 41 is disposed on the first side surface WS1 so as to be in contact with the first lead portion 121. In this way, the first external electrode 41 is selectively connected to the first internal electrode 31.

[0048] <External electrodes arranged on the main surface and external electrodes arranged on the side> The first external electrode 41 is arranged not only on the first side surface WS1 but also on the first principal surface TS1 and the second principal surface TS2. The portion of the first external electrode 41 arranged on the first side surface WS1 is referred to as a side-surface-arranged first external electrode portion 41W. Furthermore, the portion of the first external electrode 41 arranged on the first principal surface TS1 or the second principal surface TS2 is referred to as a principal-surface-arranged first external electrode portion 41T. 5, the main-surface-arranged first external electrode portion 41T on the first main surface TS1, the side-surface-arranged first external electrode portion 41W on the first side surface WS1, and the main-surface-arranged first external electrode portion 41T on the second main surface TS2 are continuous with each other and integrally form the first external electrode 41.

[0049] <First external electrode and side gap> A side gap portion 50 is disposed over the entire first side surface WS1 and the second side surface WS2 of the laminate 10. On the first side surface WS1, the side gap portion 50 is arranged so as to cover the first external electrode 41. Therefore, the side surface-arranged first external electrode portion 41W of the first external electrode 41 is covered by the side gap portion 50 and is not exposed. As a result, for the first external electrode 41, only the main surface-arranged first external electrode portion 41T is exposed from the first main surface TS1 and the second main surface TS2. Furthermore, the effective portion 110 exposed from the first side surface WS1 and the second side surface WS2 is also covered by the side gap portion 50. This prevents the internal electrode 30 from being exposed from the side surfaces.

[0050] <Second drawer section> Next, the second drawer section 122 will be described. Only the second internal electrode 32 is exposed from the first end face LS1 and the second end face LS2, and the first internal electrode 31 is not exposed. This is because the end face first cutout portion 81L is arranged at a position corresponding to the second lead portion 122 of the first internal electrode 31.

[0051] <Second external electrode> As shown in FIG. 1, the second external electrode 42 is disposed over substantially the entire first end face LS1 and second end face LS2 of the multilayer body 10. As a result, the second external electrode 42 is selectively connected to the second internal electrode 32. This is because only the second internal electrode 32 is exposed from the second lead portion 122 of the first end face LS1 and the second end face LS2.

[0052] <Effects> In the multilayer ceramic capacitor 1 of this embodiment, the first external electrode 41 includes a side surface-arranged electrode portion and a main surface-arranged electrode portion. Therefore, even if the side surface-arranged electrode portion is covered by the side gap portion 50, the main surface-arranged electrode portion can be exposed. Therefore, the multilayer ceramic capacitor 1 of this embodiment makes it easy to provide a multilayer ceramic capacitor 1 with three or more terminals that is equipped with the side gap portion 50. Furthermore, in the multilayer ceramic capacitor 1 of this embodiment, the notches 80 are appropriately arranged, so that the area of ​​the effective portion 110 can be increased while still ensuring the extraction portion 120.

[0053] <Modification> In the first embodiment of the multilayer ceramic capacitor 1, the second side surface WS2 of the second internal electrode 32 can be configured similarly to the first side surface WS1. That is, the second side surface cutout portion 82W can be disposed at a position corresponding to the second side surface WS2 of the second internal electrode 32, similar to the position corresponding to the first side surface WS1. In addition, first external electrodes 41 having the same configuration as the first external electrode 41 described above are arranged on the first main surface TS1, the second side surface WS2, and the second main surface TS2. This allows the first internal electrode 31 and the first external electrode 41 to be connected at two locations, the first side surface WS1 and the second side surface WS2, thereby making it possible to more reliably connect the first internal electrode 31 and the first external electrode 41.

[0054] The materials constituting the multilayer ceramic capacitor 1 will be described below. <Internal electrode material> The internal electrode 30 contains metal Ni as a main component. The internal electrode 30 may contain at least one selected from metals such as Cu, Ag, Pd, or Au, or alloys containing at least one of these metals, such as an Ag-Pd alloy, as a main component or a component other than the main component. Furthermore, the internal electrode 30 may contain, as a component other than the main component, particles of a dielectric material having the same composition as the ceramic contained in the dielectric layer 20. In this specification, the main metal component is defined as the metal component with the highest weight percentage.

[0055] <Internal electrode thickness and number> The thickness of the internal electrodes 30 is not particularly limited, but can be, for example, 0.8 μm or more and 1.2 μm or less. The number of internal electrodes 30 is also not particularly limited, but is preferably, for example, 20 to 300.

[0056] <Dielectric materials> The material of the dielectric layer 20 may be a dielectric ceramic containing, for example, BaTiO3, CaTiO3, SrTiO3, or CaZrO3 as a main component. The material of the dielectric layer 20 may also contain a secondary component such as a Mn compound, an Fe compound, a Cr compound, a Co compound, or a Ni compound.

[0057] <Thickness and material of the dielectric layer> The thickness of the dielectric layer 20 is not particularly limited, but is preferably, for example, 1.1 μm or more and 3.0 μm or less. The number of dielectric layers 20 is not particularly limited, but is preferably, for example, 20 to 300. The number of dielectric layers 20 is the total number of the dielectric layers in the inner layer portion and the dielectric layers in the outer layer portion.

[0058] <External electrode> Next, the external electrode 40 will be described. When the external electrodes 40 are formed by co-firing, for example, they may be made of a conductive material containing Ni, similar to the internal electrodes 30. Furthermore, the external electrodes 40 may include a plating layer as needed.

[0059] <Side gap material> The material of the side gap portion 50 is, for example, a dielectric ceramic material having a perovskite structure and composed mainly of BaTiO3. Si is added as an additive to these main components, and the additive segregates between ceramic particles. The presence of the segregated Si portions improves the flexural strength of the side gap portion 50. In the outer side gap layer 502, Si is added in an amount of 3.0 to 7.0 moles per 1000 mol of Ti. In the inner side gap layer 501, Si is added in an amount of 1.0 to 4.0 moles per 1000 mol of Ti. In particular, the outer side gap layer 502 has more segregated Si portions than the inner side gap layer 501.

[0060] <Side gap thickness> The dimension in the width (W) direction of the side gap portion 50, that is, the thickness, can be, for example, 5 μm or more and 40 μm or less, and is preferably 20 μm or less. The thickness of the outer side gap layer 502 is greater than the thickness of the inner side gap layer 501. Specifically, the thickness of the outer side gap layer 502 is 5 μm or more and 20 μm or less. On the other hand, the thickness of the inner side gap layer 501 is 0.1 μm or more and 20 μm or less.

[0061] <Thickness measurement method> Next, the measurement methods will be explained in order. The thicknesses of the dielectric layers 20 and the internal electrodes 30 can be measured, for example, by observing the LT cross section of the laminate exposed by polishing near the center in the width direction with a scanning electron microscope. Each value may be an average value of measurements taken at multiple locations in the length direction, or may be an average value of measurements taken at multiple locations in the stacking direction. Similarly, the thickness of the laminate 10 can be measured by, for example, observing an LT cross section near the center in the width direction of the laminate exposed by polishing, or a WT cross section near the center in the length direction of the laminate exposed by polishing, using a scanning electron microscope. Each value may also be an average of measurements taken at multiple locations in the length direction or width direction.

[0062] <How to measure length> Similarly, the length of the laminate 10 can be measured by, for example, observing the LT cross section near the center in the width direction of the laminate exposed by polishing with a scanning electron microscope. Each value may also be the average value of measurements taken at multiple locations in the stacking direction. Similarly, the width of the laminate 10 can be measured by, for example, observing a WT cross section of the laminate exposed by polishing near the center in the longitudinal direction with a scanning electron microscope. Each value may also be an average value of measurements taken at multiple locations in the stacking direction.

[0063] Next, a method for manufacturing the multilayer ceramic capacitor 1 of this embodiment will be described. <Manufacturing method, lamination, etc.> In the following description, a general manufacturing method will be described using as an example a method for manufacturing the multilayer ceramic capacitor 1 by so-called co-firing. First, a dielectric sheet for the dielectric layer 20 and a conductive paste for the internal electrode 30 are prepared. The dielectric sheet and the conductive paste contain a binder and a solvent. Known materials can be used as the binder and the solvent. Next, a conductive paste is printed on the dielectric sheet in a predetermined pattern, for example, to form an internal electrode pattern on the dielectric sheet. The internal electrode pattern can be formed by screen printing, gravure printing, or the like. In this case, if necessary, the internal electrode pattern may include a pattern corresponding to the cutout portion 80. Next, a predetermined number of dielectric sheets for the second outer layer portion 102, on which no internal electrode pattern is printed, are laminated. On top of that, dielectric sheets for the inner layer portion 100, on which internal electrode patterns are printed, are laminated in order. The dielectric sheets include a dielectric sheet corresponding to the first dielectric layer 21, a dielectric sheet corresponding to the inter-effective portion dielectric layer 23, and a dielectric sheet corresponding to the second dielectric layer 22. A predetermined number of dielectric sheets for the first outer layer portion 101, on which no internal electrode pattern is printed, are laminated on top of the laminate, thereby producing a laminated sheet.

[0064] <Press> Next, the laminated sheet is pressed in the lamination direction using a means such as a hydrostatic press to produce a laminated block. Next, the laminated block is cut to a predetermined size to cut out laminated chips. At this time, the corners and ridges of the laminated chips are rounded by barrel polishing or the like.

[0065] <External electrode> Next, a conductive paste material that will become the external electrodes is placed at desired positions on the laminate 10. The conductive paste material can be placed by a coating method, a printing method, or the like. The conductive paste material contains Ni and the like, similar to the material of the internal electrodes.

[0066] <Side gap section> Next, the material for the side gap portion 50 is placed on the first side surface WS1 and the second side surface WS2 of the laminate 10. In this way, a fired precursor is obtained.

[0067] <Firing> Next, the calcination precursor is calcined. The calcination temperature depends on the materials of the dielectric and electrodes, but is preferably 900°C or higher and 1400°C or lower. Through the above steps, the multilayer ceramic capacitor 1 is obtained.

[0068] Other aspects of the embodiment will be described below. Each aspect differs mainly in the way the internal electrodes 30 and the external electrodes 40 are connected. The following description will focus on the differences from the multilayer ceramic capacitor 1 of the first aspect. <Second mode> The second embodiment will be described with reference to FIGS.

[0069] <Differences between the second and first modes> The main difference between the second embodiment and the first embodiment is that: In the first embodiment, the first internal electrode 31 and the first external electrode 41 are connected to each other at one point on the first side surface WS1, The second internal electrode 32 and the second external electrode 42 are connected at two locations, the first end surface LS1 and the second end surface LS2. In the second embodiment, the first internal electrode 31 and the first external electrode 41 are connected to each other at three locations in total: two locations on the first side surface WS1 and one location on the second side surface WS2. The second internal electrode 32 and the second external electrode 42 are connected at three points in total: one point on the first side surface WS1 and two points on the second side surface WS2. In the second embodiment, the number of points where the internal electrodes 30 and the external electrodes 40 are connected is greater than in the first embodiment. Also, in the second embodiment, the internal electrodes 30 and the external electrodes 40 are connected only on the side surfaces, not on the end surfaces.

[0070] <Internal electrode> In order to achieve the above-described connection between the internal electrode 30 and the external electrode 40, the shape of the internal electrode 30 in the second embodiment is different from the shape of the internal electrode 30 in the first embodiment.

[0071] The first internal electrode 31 will be described with reference to Fig. 7(a). First, the end surface will be described. <Notched portion of end surface of first internal electrode> The outer shape of the first internal electrode 31 has two first end face cutout portions 81L, one at a position corresponding to the first end face LS1 and one at a position corresponding to the second end face LS2. The first end face cutout portions 81L extend from one end to the other at the positions corresponding to the first end face LS1 and the second end face LS2. Furthermore, the first internal electrode 31 does not have the extraction electrode portion 70 at a position corresponding to the first end face LS1 and a position corresponding to the second end face LS2. This is because the end face first cutout portion 81L is arranged from one end to the other at the positions corresponding to the first end face LS1 and the second end face LS2.

[0072] Next, the side surfaces will be described. <Notched portion on first side surface of first internal electrode> The outer shape of the first internal electrode 31 has a first side cutout portion 81W in the central portion at a position corresponding to the first side surface WS1. <Extraction electrode portion on first side surface of first internal electrode> The first internal electrode 31 has two first side surface extended electrode portions 71W in total, one at each end portion of the second internal electrode 31 at a position corresponding to the first side surface WS1. This is because second side surface cutout portions 82W are arranged at both end portions of the second internal electrode 32 at a position corresponding to the first side surface WS1, as will be described later. One of the side surface first extraction electrode portions 71W is arranged between the end surface first cutout portion 81L on the first end surface LS1 side and the side surface first cutout portion 81W, and another is arranged between the side surface first cutout portion 81W and the end surface first cutout portion 81L on the second end surface LS2 side.

[0073] <Notch on the second side surface of the first internal electrode> The outer shape of the first internal electrode 31 has two first side surface cutout portions 81W, one at each end portion at a position corresponding to the second side surface WS2.

[0074] <Extraction electrode portion on the second side surface of the first internal electrode> The first internal electrode 31 has a first side surface extended electrode portion 71W in the central portion corresponding to the second side surface WS2. This is because, as will be described later, a second side surface cutout portion 82W is disposed in the central portion corresponding to the second side surface WS2 of the second internal electrode 32. This first side surface extended electrode portion 71W is disposed so as to be sandwiched between first side surface cutout portions 81W at a position corresponding to the second side surface WS2.

[0075] The arrangement of the end faces and side faces of the first internal electrode 31 in the second embodiment will be summarized. <Arrangement order on the end face> In the first internal electrode 31, first end face cutout portions 81L are arranged from one end to the other at positions corresponding to the first end face LS1 and the second end face LS2. Therefore, the first extracted electrode portion 71 is not arranged at the positions corresponding to the first end face LS1 and the second end face LS2.

[0076] <Arrangement order on the side> In the first internal electrode 31, at a position corresponding to the first side surface WS1, from one end to the other, an end surface first cutout portion 81L, a side surface first extracted electrode portion 71W, a side surface first cutout portion 81W, a side surface first extracted electrode portion 71W, and an end surface first cutout portion 81L are arranged in that order. On the other hand, in the second internal electrode 32, at a position corresponding to the first side surface WS1, from one end to the other, a first end surface cutout portion 81L, a first side surface cutout portion 81W, a first side surface extended electrode portion 71W, a first side surface cutout portion 81W, and a first end surface cutout portion 81L are arranged in that order.

[0077] Next, the second internal electrode 32 will be described with reference to Fig. 7(b). First, the end surface will be described. <Notched portion of the end surface of the second internal electrode> The outer shape of the second internal electrode 32 has two second end face cutouts 82L, one at a position corresponding to the first end face LS1 and one at a position corresponding to the second end face LS2. The second end face cutouts 82L extend from one end to the other end at the positions corresponding to the second end face LS2 and the second end face LS2. Note that the second internal electrode 32 does not have the lead electrode portion 70 at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2, similar to the first internal electrode 31. This is because, as described above, the end face second cutout portion 82L is arranged from one end to the other end at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2.

[0078] Next, the side surfaces will be described. <Notch on the first side surface of the second internal electrode> The outer shape of the second internal electrode 32 has two second side cutout portions 82W, one at each end portion at a position corresponding to the first side surface WS1.

[0079] <Extraction electrode portion on the first side surface of the second internal electrode> The second internal electrode 32 has a second side surface extended electrode portion 72W in the center portion corresponding to the first side surface WS1 because the first side surface cutout portion 81W is disposed in the center portion corresponding to the first side surface WS1 of the first internal electrode 31. The second side surface extended electrode portion 72W is disposed so as to be sandwiched between the second side surface cutout portions 82W at a position corresponding to the first side surface WS1.

[0080] <Notch on the second side surface of the second internal electrode> The outer shape of the second internal electrode 32 has a second side cutout portion 82W in the central portion at a position corresponding to the second side surface WS2.

[0081] <Extraction electrode portion on the second side surface of the second internal electrode> The second internal electrode 32 has two second side surface extended electrode portions 72W in total, one at each end portion of the second internal electrode 32 at a position corresponding to the second side surface WS2. This is because the first side surface cutout portions 81W are disposed at both end portions of the first internal electrode 31 at a position corresponding to the second side surface WS2. One of the side surface second extraction electrode portions 72W is arranged between the end surface second cutout portion 82L on the first end surface LS1 side and the side surface second cutout portion 82W, and another is arranged between the side surface second cutout portion 82W and the end surface second cutout portion 82L on the second end surface LS2 side.

[0082] The arrangement of the end faces and side faces of the second internal electrode 32 in the second embodiment will be summarized. <Arrangement order on the end face> In the second internal electrode 32, second end face cutout portions 82L are arranged from one end to the other at positions corresponding to the first end face LS1 and the second end face LS2. Therefore, the second extraction electrode portions 72 are not arranged at the positions corresponding to the first end face LS1 and the second end face LS2.

[0083] <Arrangement order on the side> In the second internal electrode 32, at a position corresponding to the first side surface WS1, from one end to the other, an end surface second cutout portion 82L, a side surface second cutout portion 82W, a side surface second extracted electrode portion 72W, a side surface second cutout portion 82W, and an end surface second cutout portion 82L are arranged in that order. On the other hand, in the second internal electrode 32, at a position corresponding to the second side surface WS2, from one end to the other, an end surface second cutout portion 82L, a side surface second extracted electrode portion 72W, a side surface second cutout portion 82W, a side surface second extracted electrode portion 72W, and an end surface second cutout portion 82L are arranged in that order.

[0084] <Internal electrode extraction electrode> As described above, the first internal electrode 31 has a total of three lead electrode portions 70: two at positions corresponding to the first side surface WS1 and one at a position corresponding to the second side surface WS2. The second internal electrode 32 also has a total of three extraction electrode portions 70: one at a position corresponding to the first side surface WS1 and two at positions corresponding to the second side surface WS2. On the other hand, the first internal electrode 31 and the second internal electrode 32 do not have the lead electrode portion 70 at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2. This is because the cutout portions 80 are arranged from one end to the other end of the outer shapes of both the first internal electrode 31 and the second internal electrode 32 at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2.

[0085] <Drawer section> Next, the drawer section 120 will be described. The lead-out portions 120 are arranged corresponding to the above-described lead-out electrode portions 70. In the second embodiment, the lead-out portions 120 are arranged only on the first side surface WS1 and the second side surface WS2, and are not arranged on the first end surface LS1 and the second end surface LS2.

[0086] <Drawer section on the first side> On the first side surface WS1, a total of two first extraction portions 121 are arranged at positions corresponding to the side surface first extracted electrode portions 71W, and one second extraction portion 122 is arranged at a position corresponding to the side surface second extracted electrode portion 72W.

[0087] <Drawer on the second side> On the second side surface WS2, one first extraction portion 121 is arranged at a position corresponding to the side surface first extracted electrode portion 71W. Also, two second extraction portions 122 are arranged in total at positions corresponding to the side surface second extracted electrode portions 72W.

[0088] <Valid part> The valid portion 110 is exposed from the first side surface WS1 and the second side surface WS2. Near the first side surface WS1 and near the second side surface WS2, there are portions where the first side surface extended electrode portion 71W and the second side surface extended electrode portion 72W overlap in a plan view, which correspond to the first extended electrode opposing portion 71F and the second extended electrode opposing portion 72F. This portion becomes the effective portion 110. The effective portion 110 is exposed from the first side surface WS1 and the second side surface WS2. Specifically, a total of four effective portions 110 are exposed between the first drawer portion 121 and the second drawer portion 122 from each of the first side surface WS1 and the second side surface WS2.

[0089] <Relationship between the pull-out portion and the effective portion> As explained above, the lead portion 120 is a portion that allows selective connection between the internal electrode 30 and the external electrode 40. On the other hand, the effective portion 110 is a portion where the first internal electrode 31 and the second internal electrode 32 face each other in the stacking direction T. Therefore, on the side surface, in the longitudinal direction L of the side surface, the portion where only the side surface first extracted electrode portion 71W is exposed becomes the first extracted portion 121, the portion where only the side surface second extracted electrode portion 72W is exposed becomes the second extracted portion 122, and the portion where both the side surface first extracted electrode portion 71W and the side surface second extracted electrode portion 72W are exposed becomes the portion where the effective portion 110 is exposed. The portion where only the first side surface extended electrode portion 71W is exposed and the portion where only the second side surface extended electrode portion 72W is exposed correspond to the first extended electrode non-facing portion 71NF and the second extended electrode non-facing portion 72NF. On the other hand, the portions where both the first side surface extended electrode portion 71W and the second side surface extended electrode portion 72W are exposed correspond to the first extended electrode opposing portion 71F and the second extended electrode opposing portion 72F.

[0090] <Length and arrangement of the notch and extraction electrode> In this embodiment, the length and arrangement of the notch 80 are adjusted to arrange the pull-out portion 120 and the effective portion 110. Specifically, at a position corresponding to the first side surface WS1, the length in the longitudinal direction L of the first side surface cutout portion 81W of the first internal electrode 31 is shorter than the length in the longitudinal direction L of the second side surface extended electrode portion 72W of the second internal electrode 32. Therefore, in a plan view, overlapping portions of the first side surface extended electrode portion 71W and the second side surface extended electrode portion 72W can be arranged on both sides of the first side surface cutout portion 81W in the longitudinal direction L. These are portions corresponding to the first extended electrode opposing portion 71F and the second extended electrode opposing portion 72F. As a result of the above, the first draw section 121, the effective section 110, the second draw section 122, the effective section 110, and the first draw section 121 can be arranged in that order on the first side surface WS1 of the laminate 10 in the longitudinal direction L. The same is true for the second side surface WS2 of the laminate 10. On the second side surface WS2, the combination of the lead electrode portion 70 and the cutout portion 80 is reversed from that on the first side surface WS1. Therefore, on the second side surface WS2 of the laminate 10, the second lead portion 122, the effective portion 110, the first lead portion 121, the effective portion 110, and the second lead portion 122 are arranged in this order in the longitudinal direction L.

[0091] <External electrode> The external electrode 40 will be described with reference to FIG. The external electrode 40 is disposed so as to be in contact with the lead portion 120. The form of the external electrode 40 is similar to that of the first external electrode 41 of the first embodiment. That is, the external electrode 40 includes a main surface-arranged external electrode portion and a side surface-arranged external electrode portion.

[0092] <First external electrode> The first external electrode 41 is disposed at a position corresponding to the first lead portion 121 . Specifically, the first external electrodes 41 are arranged at both end portions in the length direction L of the first side surface WS1 so as to be in contact with the first lead portions 121, respectively. The first external electrode is also arranged in the center portion in the length direction L of the second side surface WS2 so as to be in contact with the first lead portion 121.

[0093] <Second external electrode> The second external electrode 42 is disposed at a position corresponding to the second lead portion 122 . Specifically, the second external electrode 42 is disposed in the center portion of the first side surface WS1 in the length direction L so as to contact the second lead portion 122. The second external electrodes are also arranged on both end portions in the length direction L of the second side surface WS2 so as to be in contact with the second lead portion 122.

[0094] <External electrodes arranged on the main surface> The first external electrode 41 and the second external electrode 42 are arranged on the first main surface TS1 and the second main surface TS2 in addition to the first side surface WS1 and the second side surface WS2. That is, each first external electrode 41 includes one side-surface-arranged first external electrode portion 41W and two main-surface-arranged first external electrode portions 41T continuous therewith. Similarly, each second external electrode 42 includes one side surface-arranged second external electrode portion 42W and two main surface-arranged second external electrode portions 42T continuous therewith. Furthermore, in accordance with the arrangement of the lead portions 120, the principal surface-arranged first external electrode portion 41T and the principal surface-arranged second external electrode portion 42T face each other in the width direction W on each principal surface.

[0095] <Side gap section> The side gap portion 50 will be described with reference to FIG. A side gap portion 50 is disposed on the first side surface WS1 and the second side surface WS2 of the laminate 10. The side gap portion 50 is disposed so as to cover the first external electrode 41 and the second external electrode 42. Therefore, the side surface-arranged first external electrode portion 41W of the first external electrode 41 is covered by the side gap portion 50 and is not exposed. As a result, only the main surface-arranged first external electrode portion 41T of the first external electrode 41 is exposed on the first main surface TS1 and the second main surface TS2. The same applies to the second external electrode 42. The side surface-arranged second external electrode portion 42W of the second external electrode 42 is covered by the side gap portion 50 and is not exposed. As a result, only the main surface-arranged second external electrode portion 42T of the second external electrode 42 is exposed on the first main surface TS1 and the second main surface TS2.

[0096] <Effects of the second aspect> The multilayer ceramic capacitor 1 of this embodiment has the side gap portion 50, and facilitates the provision of a multi-terminal multilayer ceramic capacitor 1 that allows external connection only from the main surface without using the side surface or end surface. In addition, in the multilayer ceramic capacitor 1 of this embodiment, overlapping portions of the first side surface extended electrode portion 71W and the second side surface extended electrode portion 72W can be arranged near the first side surface WS1 and near the second side surface WS2, thereby increasing the area of ​​the effective portion 110 while still ensuring the extended portion 120.

[0097] <Third aspect> The third embodiment will be described with reference to Figures 11 to 14. The following description will focus on the differences from the multilayer ceramic capacitor 1 of the first and second embodiments.

[0098] <Differences between the third and first modes> The main difference between the third embodiment and the first embodiment is that: In the first embodiment, the first internal electrode 31 and the first external electrode 41 are connected to each other at one point on the first side surface WS1, The second internal electrode 32 and the second external electrode 42 are connected at two locations, the first end surface LS1 and the second end surface LS2. In the third embodiment, the first internal electrode 31 and the first external electrode 41 are connected at two locations in total: one location on the first side surface WS1 and one location on the second side surface WS2. The second internal electrode 32 and the second external electrode 42 are connected at two locations in total: one on the first side surface WS1 and one on the second side surface WS2.

[0099] <Internal electrode> In order to achieve the above-described connection between the internal electrode 30 and the external electrode 40, the shape of the internal electrode 30 in the third embodiment is different from the shape of the internal electrode 30 in the first embodiment.

[0100] The first internal electrode 31 will be described with reference to Fig. 11(a). First, the end surface will be described. <Notched portion of end surface of first internal electrode> The outer shape of the first internal electrode 31 has two first end face cutout portions 81L, one at a position corresponding to the first end face LS1 and one at a position corresponding to the second end face LS2. The first end face cutout portions 81L extend from one end to the other at the positions corresponding to the first end face LS1 and the second end face LS2. The first internal electrode 31 does not have the extraction electrode portion 70 at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2. As described above, this is because the end face first cutout portion 81L is arranged from one end to the other at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2.

[0101] Next, the side surfaces will be described. <Notched portion on first side surface of first internal electrode> The outer shape of the first internal electrode 31 has a first side cutout portion 81W at one end portion at a position corresponding to the first side surface WS1. Specifically, the first side cutout portion 81W is provided at the end portion on the second end surface LS2 side at a position corresponding to the first side surface WS1.

[0102] <Extraction electrode portion on first side surface of first internal electrode> The first internal electrode 31 has a first side surface extended electrode portion 71W at one end portion and the center portion of a position corresponding to the first side surface WS1. This is because, as will be described later, a second side surface cutout portion 82W is arranged at one end portion and the center portion of a position corresponding to the first side surface WS1 of the second internal electrode 32. This side surface first extracted electrode portion 71W extends from an end portion on the first end face LS1 side to a central portion at a position corresponding to the first side face WS1.

[0103] <Notch on the second side surface of the first internal electrode> The outer shape of the first internal electrode 31 has a first side cutout portion 81W at one end portion at a position corresponding to the second side surface WS2. Specifically, the first side cutout portion 81W is provided at the end portion on the first end surface LS1 side at a position corresponding to the second side surface WS2.

[0104] <Extraction electrode portion on the second side surface of the first internal electrode> The first internal electrode 31 has a first side surface extended electrode portion 71W at one end portion and the center portion of a position corresponding to the second side surface WS2. This is because, as will be described later, a second side surface cutout portion 82W is arranged at one end portion and the center portion of a position corresponding to the second side surface WS2 of the second internal electrode 32. The side surface first extended electrode portion 71W extends from an end portion on the second end surface LS2 side at a position corresponding to the second side surface WS2 to the center portion. Here, the position of the first side surface cutout portion 81W on the first side surface WS1 side and the position of the first side surface cutout portion 81W on the second side surface WS2 side are in a diagonal relationship on the laminate 10. Similarly, the position of the first side surface extended electrode portion 71W on the first side surface WS1 side and the position of the first side surface extended electrode portion 71W on the second side surface WS2 side are diagonally positioned on the laminate 10.

[0105] The arrangement of the end faces and side faces of the first internal electrode 31 in the third embodiment will be summarized. <Arrangement order on the end face> In the first internal electrode 31, first end face cutout portions 81L are arranged from one end to the other at positions corresponding to the first end face LS1 and the second end face LS2. Therefore, the first extracted electrode portion 71 is not arranged at the positions corresponding to the first end face LS1 and the second end face LS2.

[0106] <Arrangement order on the side> In the first internal electrode 31, at a position corresponding to the first side surface WS1, from one end to the other end, an end surface first cutout portion 81L, a side surface first extracted electrode portion 71W, a side surface first cutout portion 81W, and an end surface first cutout portion 81L are arranged in that order. On the other hand, in the second internal electrode 32, at a position corresponding to the first side surface WS1, from one end to the other, a first end surface cutout portion 81L, a first side surface cutout portion 81W, a first side surface extracted electrode portion 71W, and a first end surface cutout portion 81L are arranged in that order.

[0107] Next, the second internal electrode 32 will be described with reference to Fig. 11(b). First, the end surface will be described. <Notched portion of the end surface of the second internal electrode> The outer shape of the second internal electrode 32 has two second end face cutouts 82L, one at a position corresponding to the first end face LS1 and one at a position corresponding to the second end face LS2. The second end face cutouts 82L extend from one end to the other at the positions corresponding to the first end face LS1 and the second end face LS2. The second internal electrode 32 does not have the extraction electrode portion 70 at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2. As described above, this is because the end face second cutout portion 82L is arranged from one end to the other at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2.

[0108] Next, the side surfaces will be described. <Notch on the first side surface of the second internal electrode> The outer shape of the second internal electrode 32 has a second side cutout portion 82W at one end portion at a position corresponding to the first side surface WS1. Specifically, the second side cutout portion 82W is provided at the end portion on the first end surface LS1 side at a position corresponding to the first side surface WS1.

[0109] <Extraction electrode portion on the first side surface of the second internal electrode> The second internal electrode 32 has a side surface second extended electrode portion 72W at one end portion and the center portion corresponding to the first side surface WS1 because the first side surface first cutout portion 81W is disposed at one end portion and the center portion corresponding to the first side surface WS1 of the first internal electrode 31. This side surface second extended electrode portion 72W extends from an end portion on the second end surface LS2 side to a central portion at a position corresponding to the first side surface WS1.

[0110] <Notch on the second side surface of the second internal electrode> The outer shape of the second internal electrode 32 has a second side cutout portion 82W at one end portion at a position corresponding to the second side surface WS2. Specifically, the second side cutout portion 82W is provided at the end portion on the second end surface LS2 side at a position corresponding to the second side surface WS2.

[0111] <Extraction electrode portion on the second side surface of the second internal electrode> The second internal electrode 32 has a side surface second extended electrode portion 72W at one end portion and the center portion corresponding to the second side surface WS2 because the first side surface cutout portion 81W is disposed at one end portion and the center portion corresponding to the second side surface WS2 of the first internal electrode 31. This side surface second extended electrode portion 72W extends from the end portion on the first end surface LS1 side to the central portion at a position corresponding to the second side surface WS2. Here, the position of the second side surface cutout portion 82W on the first side surface WS1 side and the position of the second side surface cutout portion 82W on the second side surface WS2 side are in a diagonal relationship on the laminate 10. Similarly, the position of the second side surface extended electrode portion 72W on the first side surface WS1 side and the position of the second side surface extended electrode portion 72W on the second side surface WS2 side are in a diagonal relationship on the laminate 10.

[0112] The arrangement of the end faces and side faces of the second internal electrode 32 in the third embodiment will be summarized. <Arrangement order on the end face> In the second internal electrode 32, second end face cutout portions 82L are arranged from one end to the other at positions corresponding to the first end face LS1 and the second end face LS2. Therefore, the second extraction electrode portions 72 are not arranged at the positions corresponding to the first end face LS1 and the second end face LS2.

[0113] <Arrangement order on the side> In the second internal electrode 32, at a position corresponding to the first side surface WS1, from one end to the other, an end surface second cutout portion 82L, a side surface second cutout portion 82W, a side surface second extracted electrode portion 72W, and an end surface second cutout portion 82L are arranged in that order. On the other hand, in the second internal electrode 32, at a position corresponding to the second side surface WS2, from one end to the other, an end surface second cutout portion 82L, a side surface second extracted electrode portion 72W, a side surface second cutout portion 82W, and an end surface second cutout portion 82L are arranged in that order.

[0114] <Internal electrode extraction electrode> As described above, the first internal electrode 31 has a total of two extraction electrode portions 70, one at a position corresponding to the first side surface WS1 and the other at a position corresponding to the second side surface WS2. The second internal electrode 32 also has two lead electrode portions 70 in total, one at a position corresponding to the first side surface WS1 and the other at a position corresponding to the second side surface WS2. On the other hand, the first internal electrode 31 and the second internal electrode 32 do not have the lead electrode portion 70 at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2. This is because the cutout portions 80 are arranged from one end to the other end of the outer shapes of both the first internal electrode 31 and the second internal electrode 32 at the position corresponding to the first end face LS1 and the position corresponding to the second end face LS2.

[0115] <Drawer section> Next, the drawer section 120 will be described. The lead-out portions 120 are arranged corresponding to the above-described lead-out electrode portions 70. In the second embodiment, the lead-out portions 120 are arranged only on the first side surface WS1 and the second side surface WS2, and are not arranged on the first end surface LS1 and the second end surface LS2.

[0116] <Drawer section on the first side> On the first side surface WS1, one first extraction portion 121 is arranged at a position corresponding to the side surface first extracted electrode portion 71W, and one second extraction portion 122 is arranged at a position corresponding to the side surface second extracted electrode portion 72W.

[0117] <Drawer on the second side> On the second side surface WS2, one first extraction portion 121 is arranged at a position corresponding to the side surface first extracted electrode portion 71W, and one second extraction portion 122 is arranged at a position corresponding to the side surface second extracted electrode portion 72W.

[0118] <Valid part> The valid portion 110 is exposed from the first side surface WS1 and the second side surface WS2. Near the first side surface WS1 and near the second side surface WS2, there are portions where the first side surface extended electrode portion 71W and the second side surface extended electrode portion 72W overlap in a plan view, which correspond to the first extended electrode opposing portion 71F and the second extended electrode opposing portion 72F. This portion becomes the effective portion 110. The effective portion 110 is exposed from the first side surface WS1 and the second side surface WS2. Specifically, one effective portion 110 is exposed from each of the first side surface WS1 and the second side surface WS2 in the central portion in the longitudinal direction L.

[0119] <Length and arrangement of the notch and extraction electrode> In this embodiment, each extracted electrode portion 70 extends to the center in the longitudinal direction L at a position corresponding to each side surface. Therefore, the overlapping portion of the first extracted electrode portion 71W and the second extracted electrode portion 72W can be located in the center portion, which corresponds to the first extracted electrode opposing portion 71F and the second extracted electrode opposing portion 72F. In this embodiment, the first side surface cutout 81W and the second side surface cutout 82W are disposed at different ends in the longitudinal direction L, at a position corresponding to the first side surface WS1 and a position corresponding to the second side surface WS2. Therefore, the first extracted portion 121 or the second extracted portion 122 can be disposed at both end portions in the longitudinal direction L of the first side surface WS1 and the second side surface WS2, respectively, in the portions corresponding to the first extracted electrode non-facing portion 71NF and the second extracted electrode non-facing portion 72NF. As a result, the first drawn portion 121, the effective portion 110, and the first drawn portion 121 can be arranged in this order on the first side surface WS1 of the laminate 10 in the length direction L. The same is true for the second side surface WS2 of the laminate 10. On the second side surface WS2, the combination of the lead electrode portion 70 and the cutout portion 80 is reversed from that on the first side surface WS1. Therefore, on the second side surface WS2 of the laminate 10, the second lead portion 122, the effective portion 110, and the first lead portion 121 are arranged in the length direction L in the reverse order from that on the first side surface WS1 of the laminate 10.

[0120] <External electrode> The external electrode 40 will be described with reference to FIG. The external electrode 40 is disposed so as to be in contact with the lead portion 120. The form of the external electrode 40 is similar to that of the first external electrode 41 of the first embodiment. That is, the external electrode 40 includes a main surface-arranged external electrode portion and a side surface-arranged external electrode portion.

[0121] <First external electrode> The first external electrode 41 is disposed at a position corresponding to the first lead portion 121 . Specifically, the first external electrode 41 is disposed in contact with the first lead portion 121 at the end portion of the first side surface WS1 on the first end surface LS1 side. The first external electrode is also arranged on the end portion of the second side surface WS2 on the second end surface LS2 side so as to be in contact with the first lead portion 121.

[0122] <Second external electrode> The second external electrode 42 is disposed at a position corresponding to the second lead portion 122 . Specifically, the second external electrode 42 is disposed in contact with the second lead portion 122 at the end portion of the first side surface WS1 on the second end surface LS2 side. The second external electrode is also disposed on the end portion of the first side surface WS1 on the first end surface LS1 side so as to contact the second lead portion 122.

[0123] <External electrodes arranged on the main surface> The first external electrode 41 and the second external electrode 42 are arranged on the first main surface TS1 and the second main surface TS2 in addition to the first side surface WS1 and the second side surface WS2. That is, each first external electrode 41 includes one side-surface-arranged first external electrode portion 41W and two main-surface-arranged first external electrode portions 41T continuous therewith. Similarly, each second external electrode 42 includes one side surface-arranged second external electrode portion 42W and two main surface-arranged second external electrode portions 42T continuous therewith.

[0124] <Side gap section> The side gap portion 50 will be described with reference to FIG. A side gap portion 50 is disposed on the first side surface WS1 and the second side surface WS2 of the laminate 10. The side gap portion 50 is disposed so as to cover the first external electrode 41 and the second external electrode 42. Therefore, the side surface-arranged first external electrode portion 41W of the first external electrode 41 is covered by the side gap portion 50 and is not exposed. As a result, only the main surface-arranged first external electrode portion 41T of the first external electrode 41 is exposed on the first main surface TS1 and the second main surface TS2. The same applies to the second external electrode 42. The side surface-arranged second external electrode portion 42W of the second external electrode 42 is covered by the side gap portion 50 and is not exposed. As a result, only the main surface-arranged second external electrode portion 42T of the second external electrode 42 is exposed on the first main surface TS1 and the second main surface TS2.

[0125] <Effects of the third aspect> The multilayer ceramic capacitor 1 of this embodiment has the side gap portion 50, and facilitates the provision of a multi-terminal multilayer ceramic capacitor 1 that allows external connection only from the main surface without using the side surface or end surface. Furthermore, in the multilayer ceramic capacitor 1 of this aspect, the overlapping area between the first side surface extended electrode portion 71W and the second side surface extended electrode portion 72W can be increased near the first side surface WS1 and near the second side surface WS2, thereby increasing the area of ​​the effective portion 110 while still ensuring the extended portion 120.

[0126] <Fourth aspect> The fourth embodiment will be described with reference to Figures 15 to 18. The fourth embodiment is similar to the third embodiment, so the fourth embodiment will be described mainly focusing on the differences from the third embodiment.

[0127] <Differences between the fourth and third modes> The difference between the fourth embodiment and the third embodiment is that: In the third embodiment, the valid portion 110 is exposed to the first side surface WS1 and the second side surface WS2, whereas in the fourth embodiment, the valid portion 110 is not exposed. This difference is due to the difference in the length in the longitudinal direction L of the extracted electrode portion 70 between the fourth embodiment and the third embodiment. Specifically, the length in the longitudinal direction L of the extracted electrode portion 70 in the fourth embodiment is shorter than the length in the longitudinal direction L of the extracted electrode portion 70 in the third embodiment. Therefore, in the fourth mode, unlike the third mode, the first side surface extended electrode portion 71W and the second side surface extended electrode portion 72W do not overlap in the stacking direction T, and as a result, do not form the effective portion 110. Therefore, in the fourth mode, the effective portion 110 is not exposed on the first side surface WS1 and the second side surface WS2.

[0128] <Side cutout and extraction electrode> The internal electrode 30 will be described with reference to FIG. In the fourth embodiment, the ratio of the lengths of the extracted electrode portion 70 and the cutout portion 80 in the longitudinal direction L at positions corresponding to the side surfaces is reversed from that in the third embodiment. Specifically, in the third configuration, the length of the extracted electrode portion 70 is longer than the length of the notch portion 80. In contrast, in the fourth configuration, the length of the extracted electrode portion 70 is shorter than the length of the notch portion 80. That is, it is not the extraction electrode portion 70 but the notch portion 80 that extends from the end portion to the center portion in the length direction L at the position corresponding to the side surface. Therefore, in the fourth aspect, the first side surface extended electrode portion 71W and the second side surface extended electrode portion 72W do not overlap in the stacking direction T. In other words, the first extended electrode opposing portion 71F and the second extended electrode opposing portion 72F are not arranged, and as a result, the effective portion 110 is not formed.

[0129] <Drawer section> Next, the drawer section 120 will be described. The lead portions 120 are arranged at positions corresponding to the first side surface lead electrode portion 71W and the second side surface lead electrode portion 72W. Specifically, similar to the third embodiment, one first lead portion 121 and one second lead portion 122 are arranged on each of the first side surface WS1 and the second side surface WS2. However, unlike the third embodiment, the effective portion 110 is not disposed between the first drawn portion 121 and the second drawn portion 122. Furthermore, the lengths of the first drawn portion 121 and the second drawn portion 122 in the longitudinal direction L are longer than those of the third embodiment.

[0130] <External electrode and side gap> The external electrode 40 and the side gap portion 50 are the same as those in the third embodiment.

[0131] <Advantages of the fourth mode> In the multilayer ceramic capacitor 1 of the fourth embodiment, it is possible to prevent short circuits at the side surfaces of the first internal electrode 31 and the second internal electrode 32. This is because the side surface first extracted electrode portion 71W and the side surface second extracted electrode portion 72W do not overlap in a plan view. Furthermore, the areas of the first drawer portion 121 and the second drawer portion 122 can be increased because the areas of the first drawer portion 121 and the second drawer portion 122 are not reduced by the effective portion 110.

[0132] <Size of cutout> As described above, the length L and width W of the cutout portion 80 can be set to various values ​​depending on how the effective portion 110 and the drawn-out portion 120 are arranged.

[0133] <Length along the surface to be placed> For example, when the cutout portion 80 is positioned at both end portions of the external shape of the internal electrode 30 at positions corresponding to the side surfaces or the end surfaces, the length of the cutout portion 80 along the side surfaces or end surfaces on which it is positioned is preferably 10% or more and 30% or less of the total length of the side surfaces or end surfaces on which it is positioned.

[0134] Furthermore, when the internal electrode 30 is placed at one end portion of a position corresponding to a side surface or an end surface in the external shape of the internal electrode 30, the length of the cutout portion 80 along the side surface or end surface where it is placed is preferably 10% or more and 70% or less of the total length of the side surface or end surface where it is placed.

[0135] Furthermore, when the internal electrode 30 is positioned in the center of a position corresponding to a side surface or an end surface in the external shape of the internal electrode 30, the length of the cutout portion 80 along the side surface or end surface where it is positioned is preferably 10% or more and 40% or less of the total length of the side surface or end surface where it is positioned.

[0136] <Length in the direction perpendicular to the surface on which it is placed> Furthermore, when the cutout portion 80 is positioned at a position corresponding to a side surface or an end surface of the external shape of the internal electrode 30, the length of the cutout portion 80 in a direction perpendicular to the side surface or end surface on which it is positioned is preferably 5% or more and 20% or less of the total length of the external shape in a direction perpendicular to the side surface or end surface on which it is positioned.

[0137] The multilayer ceramic capacitor of the present invention comprises: a first dielectric layer on which a first internal electrode is formed; a second dielectric layer on which a second internal electrode is formed; a laminate in which the first dielectric layers and the second dielectric layers are alternately laminated, The laminate has two main surfaces, two side surfaces, and two end surfaces, the laminate has an inner layer portion in which the first inner electrodes and the second inner electrodes are alternately stacked with the dielectric layers interposed therebetween, outer layer portions arranged to sandwich the inner layer portion in the stacking direction and made of a dielectric material, and side gap portions arranged to sandwich the inner layer portion and the outer layer portion in the width direction, a first outer electrode connected to the first inner electrode; a second outer electrode connected to the second inner electrode, The first external electrode is a main surface-arranged electrode portion arranged on at least one of the two main surfaces; The first internal electrode has a side surface disposed electrode portion connected to at least one side surface end of the first internal electrode and covered by a side gap portion.

[0138] According to the above configuration, the first external electrode includes a side-surface-arranged electrode portion covered by the side gap portion and a main-surface-arranged electrode portion arranged on the main surface, making it possible to provide a multi-terminal multilayer ceramic capacitor with three or more terminals to which a technique of subsequently arranging the side gap portion can be easily applied.

[0139] The multilayer ceramic capacitor is The principal surface-arranged electrode portions of the first external electrode may be arranged on each of the two principal surfaces.

[0140] According to the above configuration, the main surface-arranged electrode portions are arranged on both main surfaces, which makes it easy to connect the internal electrodes to the wiring board and external wiring.

[0141] The multilayer ceramic capacitor is The side surface disposed electrode portion of the first external electrode may be connected to a side surface end portion of each of the first internal electrodes.

[0142] According to the above configuration, the side surface-disposed electrode portion is connected to the side surface end of the first internal electrode, so that the first external electrode is connected to the first internal electrode at the side surface without being exposed from the side surface, and can be connected to a wiring board or external wiring at the main surface.

[0143] The multilayer ceramic capacitor is The second external electrode is a main surface-arranged electrode portion arranged on at least one of the two main surfaces; The second internal electrode may have a side surface disposed electrode portion connected to at least one side surface end of the second internal electrode and covered by the side gap portion.

[0144] According to the above configuration, the second external electrode has a main surface-arranged electrode portion arranged on the main surface and a side surface-arranged electrode portion connected to the second internal electrode at its side surface end and covered by the side gap portion, so that the second internal electrode can be connected to a wiring board or external wiring without being exposed on the side surface.

[0145] The multilayer ceramic capacitor is The main surface-arranged electrode portions of the second external electrode may be arranged on each of the two main surfaces.

[0146] According to the above configuration, the main surface-arranged electrode portions of the second external electrode are arranged on both main surfaces, which makes it easy to connect the second internal electrode, as well as the first internal electrode, to a wiring board or external wiring.

[0147] The multilayer ceramic capacitor is The side surface disposed electrode portion of the second external electrode may be connected to a side surface end portion of each of the second internal electrodes.

[0148] According to the above configuration, the side surface-disposed electrode portion is connected to the side surface end of the second internal electrode, so that the second external electrode is also connected to the second internal electrode at the side surface without being exposed from the side surface, and can be connected to the wiring board or external wiring at the main surface.

[0149] The multilayer ceramic capacitor is The electrode portion arranged on the main surface of the first external electrode and the electrode portion arranged on the main surface of the second external electrode may face each other in the width direction on the main surface.

[0150] According to the above configuration, the main surface-arranged electrode portion of the first external electrode and the main surface-arranged electrode portion of the second external electrode face each other in the width direction on the main surface, so that the connection of the external wiring to the first external electrode and the connection of the external wiring to the second external electrode can be separated into two sides of the multilayer ceramic capacitor.

[0151] The multilayer ceramic capacitor is the first internal electrode has a first main electrode portion and a first extraction electrode portion connected to the first main electrode portion and extracted to a side surface, the second internal electrode has a second main electrode portion and a second extraction electrode portion connected to the second main electrode portion and extracted to a side surface, the first main electrode portion and the second main electrode portion face each other in the stacking direction, the first extracted electrode portion and the second extracted electrode portion have opposing portions that are partially opposed to each other in the stacking direction, the side surface disposed electrode portion of the first external electrode is connected to a portion of the first extraction electrode portion other than the opposing portion, The side surface arranged electrode portion of the second external electrode may be connected to a portion of the second extraction electrode portion other than the facing portion.

[0152] According to the above configuration, the first extracted electrode portion and the second extracted electrode portion have an opposing portion that partially faces each other in the stacking direction, which increases the area of ​​the effective portion.

[0153] The multilayer ceramic capacitor is the first internal electrode has a first main electrode portion and a first extraction electrode portion connected to the first main electrode portion and extracted to a side surface, the second internal electrode includes a second main electrode portion and a second extraction electrode portion connected to the second main electrode portion and extracted to a side surface, the first main electrode portion and the second main electrode portion face each other in the stacking direction, The first extracted electrode portion and the second extracted electrode portion do not have to face each other in the stacking direction.

[0154] According to the above configuration, the first extracted electrode portion and the second extracted electrode portion do not face each other in the stacking direction, which facilitates selective connection between the external electrode and the first internal electrode or the second internal electrode on the side surface.

[0155] The multilayer ceramic capacitor is the first internal electrode has a first main electrode portion, the second internal electrode has a second main electrode portion and a second extraction electrode portion connected to the second main electrode portion and extracted to an end surface, a notch is formed in a part of a region of the second internal electrode facing the first main electrode portion on a side surface thereof, the first main electrode portion and the second main electrode portion face each other in the stacking direction, the side surface disposed electrode portion of the first external electrode is connected to a portion where the first internal electrode and the notch portion face each other, The second external electrode may be connected to the second extraction electrode portion.

[0156] According to the above configuration, the first external electrode is connected to the portion of the first internal electrode where the notch of the second internal electrode faces, thereby facilitating selective connection between the first external electrode and the first internal electrode.

[0157] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various changes and modifications are possible. [Explanation of symbols]

[0158] 1. Multilayer ceramic capacitors 10 Laminate 20 dielectric layer 30 Internal electrode 31 1st internal electrode 32 2nd internal electrode 40 External electrode 41 1st external electrode 42 2nd external electrode 50 Side gap section 501 Inner side gap layer 502 outer side gap layer 60 Main electrode section 61 1st main electrode section 62 2nd main electrode section 70 Extraction electrode section 71 1st extraction electrode section 72 2nd extraction electrode section 80 Notch 100 Inner layer 101 1st outer layer 102 Second outer layer 110 Valid Part 120 Drawer section 121 1st drawer 122 2nd drawer L30 Electrode facing part LG1 First end face gap LG2 Gap on the second end face W30 Electrode facing part WG1 First side gap L lengthwise T Stacking direction W width direction LS1 1st end face LS2 2nd end face TS1 First main surface TS2 Second principal surface WS1 1st aspect WS2 Second Side

Claims

1. a first dielectric layer on which a first internal electrode is formed; a second dielectric layer on which a second internal electrode is formed; a laminate in which the first dielectric layers and the second dielectric layers are alternately laminated, the laminate has a first main surface and a second main surface that face each other in a stacking direction, a first side surface and a second side surface that face each other in a width direction perpendicular to the stacking direction, and a first end surface and a second end surface that face each other in a length direction perpendicular to the stacking direction and the width direction, the laminate has an inner layer portion in which the first inner electrodes and the second inner electrodes are alternately stacked with the dielectric layers interposed therebetween, outer layer portions arranged to sandwich the inner layer portion in the stacking direction and made of a dielectric material, and side gap portions arranged to sandwich the inner layer portion and the outer layer portion in the width direction, a first external electrode connected to the first internal electrode and formed in a strip shape on a surface of the inner layer portion on the first side surface side and on a part of a surface of the inner layer portion on the second side surface side; a second external electrode connected to the second internal electrode and formed to entirely cover the first end surface and the second end surface, The first external electrode is a main surface-arranged electrode portion arranged on at least one of the two main surfaces; a side-surface-disposed electrode portion that is disposed outside the inner layer portion and is covered by the side gap portion, the main surface-arranged electrode portions of the first external electrode are arranged on each of the two main surfaces; Multilayer ceramic capacitor.

2. the side surface disposed electrode portion of the first external electrode is connected to the side surface end portion of each of the first internal electrodes; The multilayer ceramic capacitor according to claim 1 .

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