Electronic component

Abstract

To provide an electronic component in which noise in a relatively high frequency band can be suppressed.SOLUTION: In an electronic component 1, a coil CL includes a first end CL1 and a second end CL2. The first end CL1 is disposed inside an element body 2 and is connected to a first external electrode 5. The second end CL2 is connected to a second external electrode 6. A lead-out conductor 71 connects a portion of the path of the coil CL which is located between the second end CL2 and the first end CL1 to the second external electrode 6. The contact area between the lead-out conductor 71 and the second external electrode 6 is smaller than the contact area between the second end CL2 and the second external electrode 6.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] There is known an electronic component that includes an element body, external electrodes provided on the element body, and a coil disposed inside the element body (for example, Patent Document 1). The coil is connected to the external electrodes. The coil includes a plurality of coil conductors. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-056513 Summary of the Invention [Problem to be solved by the invention]

[0004] In the coil component described above, when an electric signal is applied to the coil, noise occurs in a relatively high frequency band. For example, in a relatively high frequency band, the higher the frequency, the greater the Q value. If the noise in the high frequency band can be removed, a desired electric signal can be output.

[0005] An object of one aspect of the present invention is to provide an electronic component that can suppress noise in a relatively high frequency band. [Means for solving the problem]

[0006] An electronic component according to one aspect of the present invention includes an element body, a first external electrode, a second external electrode, a coil, and a lead conductor. The element body has first and second end faces facing each other in a first direction and a side face connecting the first and second end faces. The first external electrode includes a first end face electrode portion and a first side face electrode portion. The first end face electrode portion is provided on the first end face. The first side face electrode portion is provided on the side face and extends from the first end face toward the second end face. The second external electrode portion includes a second end face electrode portion and a second side face electrode portion. The second end face electrode portion is provided on the second end face. The second side face electrode portion is provided on the side face and extends from the second end face toward the first end face. The coil includes a first end portion and a second end portion. The first end portion is disposed inside the element body and is connected to the first external electrode. The second end portion is connected to the second external electrode. The lead conductor connects a portion of the coil path located between the second end and the first end to the second external electrode, and the contact area between the lead conductor and the second external electrode is smaller than the contact area between the second end and the second external electrode.

[0007] The electronic component includes a lead conductor. The lead conductor connects a portion of the coil path closer to the first end than the second end to the second external electrode. The contact area between the lead conductor and the second external electrode is smaller than the contact area between the second end and the second external electrode. After further research, the inventors of the present application found that, with this configuration, the change in the L value is suppressed while the change in the Q value is also suppressed for electrical signals in a relatively high frequency band. In other words, with this configuration, noise in a relatively high frequency band can be suppressed.

[0008] In one aspect, the lead conductor may include a plurality of lead conductors. The plurality of lead conductors may be connected to the coil at positions along the path of the coil that are different in distance to the first end. In this case, an electronic component having a desired frequency characteristic relative to a Q value can be provided.

[0009] In the above-described embodiment, the contact area between the lead conductor and the coil may be 1 / 10 or less of the contact area between the second external electrode and the coil, which can more reliably suppress changes in the L value and Q value in the high frequency band.

[0010] In one of the above aspects, the coil may include a first conductor portion, a second conductor portion, and a third conductor portion. The first conductor portion may include a first end portion. The second conductor portion may include a second end portion. The third conductor portion may be disposed between the first conductor portion and the second conductor portion on the path of the coil. The length of the second conductor portion on the path of the coil may be longer than the shortest distance between the third conductor portion and the second external electrode. The lead conductor may connect at least one of the first conductor portion and the third conductor portion to the second external electrode. In this case, the potential difference with respect to the second external electrode is larger in the first and third conductor portions than in the second conductor portion. It is believed that characteristic changes in the Q value are more easily suppressed in the high frequency band. [Effects of the Invention]

[0011] One aspect of the present invention provides an electronic component in which relatively high frequency noise can be suppressed. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of an electronic component according to an embodiment of the present invention. [Figure 2] FIG. 2 is a partial cross-sectional view of the electronic component taken along the YZ axis plane. [Figure 3] FIG. 2 is a partial cross-sectional view of the electronic component taken along the XY axis plane. [Figure 4] FIG. 2 is a partial cross-sectional view of an electronic component taken along an XZ-axis plane. [Figure 5] (a) to (d) show the coil conductors in each layer. [Figure 6] FIG. 10 is a partial cross-sectional view of an electronic component taken along the YZ axis plane in a modified example of the present embodiment. [Figure 7]FIG. 10 is a partial cross-sectional view of an electronic component taken along the YZ axis plane in a modified example of the present embodiment. [Figure 8] 10 is a graph showing frequency characteristics of the L value. [Figure 9] 10 is a graph showing frequency characteristics of the Q value. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are designated by the same reference numerals, and redundant description will be omitted.

[0014] First, an electronic component according to this embodiment will be described with reference to FIGS. 1 to 5. In the example shown in this embodiment, the electronic component 1 is a laminated coil component. As a modification of this embodiment, the electronic component 1 may be a filter component including a coil. FIG. 1 is a perspective view of the electronic component according to this embodiment. FIG. 2 is a partial cross-sectional view of the electronic component taken along the YZ-axis plane. FIG. 3 is a partial cross-sectional view of the electronic component taken along the XY-axis plane. FIG. 4 is a partial cross-sectional view of the electronic component taken along the XZ-axis plane.

[0015] As shown in FIG. 1, electronic component 1 includes element body 2 and external electrodes 5 and 6. For example, if external electrode 5 is a first external electrode, external electrode 6 corresponds to a second external electrode. Electronic component 1 is mounted, for example, by soldering to an electronic device. The electronic device includes, for example, a circuit board or an electronic component. In this embodiment, element body 2 is formed by multiple element body layers stacked in the X-axis direction.

[0016] The element body 2 has, for example, insulating properties. The element body 2 is made of, for example, a magnetic material. The magnetic material includes, for example, at least one selected from a Ni-Cu-Zn ferrite material, a Ni-Cu-Zn-Mg ferrite material, and a Ni-Cu ferrite material. The magnetic material that makes up the element body 2 may include an Fe alloy or the like. The element body 2 may be made of a non-magnetic material. The non-magnetic material includes, for example, at least one selected from a glass ceramic material and a dielectric material.

[0017] The element body 2 has, for example, a rectangular parallelepiped shape. The rectangular parallelepiped shape includes a rectangular parallelepiped shape with chamfered corners and ridges, a rectangular parallelepiped shape with rounded corners and ridges, and a rectangular parallelepiped shape with a recess.

[0018] The element body 2 has a pair of side surfaces 3a facing each other, a pair of side surfaces 3c facing each other, and a pair of end surfaces 3e, 3f facing each other. Each of the side surfaces 3a, 3c is connected to a pair of end surfaces 3e, 3f. The pair of side surfaces 3a, the pair of side surfaces 3c, and the pair of end surfaces 3e, 3f form a rectangular shape. The direction in which the pair of side surfaces 3a face each other is the third direction D3. The direction in which the pair of side surfaces 3c face each other is the second direction D2. The direction in which the pair of end surfaces 3e, 3f face each other is the first direction D1. The first direction D1 and the second direction D2 intersect with each other. The third direction D3 intersects with the first direction D1 and the second direction D2. In the example shown in this embodiment, the first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other.

[0019] The electronic component 1 is solder-mounted to an electronic device. The electronic device may include, for example, a circuit board or a laminated electronic component. One side surface 3a of the electronic component 1 faces the electronic device. The one side surface 3a is arranged to form a mounting surface. The one side surface 3a is the mounting surface. Of the pair of side surfaces 3c, one side surface 3c may be arranged to form a mounting surface. For example, when the side surface 3a forms a first side surface, the side surface 3c forms a second side surface.

[0020] For example, the third direction D3 is perpendicular to each side surface 3a. The first direction D1 is parallel to each side surface 3a and each side surface 3c. The second direction D2 is perpendicular to each side surface 3c. In this embodiment, the length of the element body 2 in the first direction D1 is greater than the length of the element body 2 in the second direction D2 and is also greater than the length of the element body 2 in the third direction D3. The first direction D1 is the longitudinal direction of the element body 2. The length of the element body 2 in the second direction D2 and the length of the element body 2 in the third direction D3 may be equal to each other. The length of the element body 2 in the first direction D1 and the length of the element body 2 in the third direction D3 may be different from each other. In the example shown in this embodiment, the first direction D1 corresponds to the Y-axis direction, the second direction D2 corresponds to the X-axis direction, and the third direction D3 corresponds to the Z-axis direction.

[0021] The length of the element body 2 in the third direction D3 is the height of the element body 2. The length of the element body 2 in the second direction D2 is the width of the element body 2. The length of the element body 2 in the first direction D1 is the length of the element body 2. In this embodiment, the height T of the element body 2 is 0.05 to 1 mm, the width W of the element body 2 is 0.05 to 1 mm, and the length L of the element body 2 is 0.1 to 2 mm. For example, the height T of the element body 2 is 0.3 mm, the width W of the element body 2 is 0.2 mm, and the length L of the element body 2 is 0.4 mm.

[0022] The pair of side surfaces 3c extend in the third direction D3 to connect the pair of side surfaces 3a. The pair of side surfaces 3c also extend in the first direction D1. The pair of end surfaces 3e, 3f extend in the third direction D3 to connect the pair of side surfaces 3a. The pair of end surfaces 3e, 3f also extend in the second direction D2.

[0023] The element body 2 has four ridge lines 3g, four ridge lines 3i, and four ridge lines 3j. The ridge lines 3g are located between the end faces 3e, 3f and the side face 3a. The ridge lines 3i are located between the end faces 3e, 3f and the side face 3c. The ridge lines 3j are located between the side face 3a and the side face 3c. In this embodiment, the ridge lines 3g, 3i, and 3j are rounded so as to be curved. The element body 2 is subjected to so-called R-chamfering. The end faces 3e, 3f and the side face 3a are indirectly adjacent to each other via the ridge lines 3g. The end faces 3e, 3f and the side face 3c are indirectly adjacent to each other via the ridge lines 3i. The side face 3a and the side face 3c are indirectly adjacent to each other via the ridge lines 3j.

[0024] The pair of external electrodes 5, 6 are arranged spaced apart on the outer surface of the element body 2. The pair of external electrodes 5, 6 face each other in the Z-axis direction. The pair of external electrodes 5, 6 are spaced apart in the Z-axis direction. The external electrodes 5, 6 are provided on each of the pair of side surfaces 3c and the pair of side surfaces 3a, respectively.

[0025] The pair of external electrodes 5, 6 are formed by a known method. The pair of external electrodes 5, 6 are made of, for example, a metal material. The metal material is, for example, copper, silver, gold, nickel, or chromium. The pair of external electrodes 5, 6 are formed, for example, by plating an electrode layer. The electrode layer is made of, for example, a conductive paste. The conductive paste is applied, for example, by a dipping method, a printing method, or a transfer method. The electrode layer may be formed, for example, by a photolithography method. The plating process is, for example, electrolytic plating or electroless plating. This plating process forms a plating layer on the outer surface of the conductive paste.

[0026] The external electrode 5 includes, for example, an end surface electrode portion 5a and a side surface electrode portion 5b. The end surface electrode portion 5a is provided on the end surface 3e. The side surface electrode portion 5b is provided on a pair of side surfaces 3a and a pair of side surfaces 3c. The side surface electrode portion 5b extends from the end surface 3e toward the end surface 3f. The external electrode 6 includes, for example, an end surface electrode portion 6a and a side surface electrode portion 6b. The end surface electrode portion 6a is provided on the end surface 3f. The side surface electrode portion 6b is provided on a pair of side surfaces 3a and a pair of side surfaces 3c. The side surface electrode portion 6b extends from the end surface 3f toward the end surface 3e. The side surface electrode portion 5b and the side surface electrode portion 6b cover, for example, a portion of each side surface 3a and a portion of each side surface 3c.

[0027] In the example shown in this embodiment, the side electrode portion 5b of the external electrode 5 and the side electrode portion 6b of the external electrode 6 are formed in a ring shape. On each side surface 3a, 3c, the area covered by the side electrode portion 5b and the side electrode portion 6b has a rectangular shape when viewed from the X-axis direction or the Z-axis direction, for example. In this specification, "connected" means connected in a state of direct contact. "Directly contacted" means connected to each other without passing through other members shown in this specification. "Directly contacted" does not exclude connection via members not explicitly shown in this specification. Unless otherwise specified, "connected" includes not only a state of direct contact but also a state of being physically separated and electrically connected.

[0028] As shown in Fig. 2 to Fig. 5(a) to Fig. 5(d), the electronic component 1 further includes a coil CL and a lead conductor 71. The coil CL is disposed inside the element body 2. Fig. 2 is a partial cross-sectional view of the electronic component taken along the YZ-axis plane. Fig. 3 is a partial cross-sectional view of the electronic component taken along the XY-axis plane. Fig. 4 is a partial cross-sectional view of the electronic component taken along the XZ-axis plane. Figs. 5(a) to 5(d) show the coil conductors in each layer.

[0029] The coil CL electrically connects the external electrode 5 and the external electrode 6. The coil CL forms a coil axis CA along the opposing direction of the pair of side surfaces 3c. The coil axis CA extends, for example, in the X-axis direction. That is, the X-axis direction corresponds to the coil axis direction. The coil CL includes end portions CL1 and CL2 that are spaced apart from each other. For example, the coil CL has a spiral structure that progresses clockwise from end portion CL1 to end portion CL2 when viewed from the X-axis direction.

[0030] An end CL1 of the coil CL is connected to the external electrode 5. An end CL2 of the coil CL is connected to the external electrode 6. A portion of the coil CL overlaps with the side electrode portions 5b and 6b when viewed along the Z-axis direction. The coil CL includes multiple coil conductors 10. The multiple coil conductors 10 correspond to internal conductors. The multiple coil conductors 10 include multiple coil conductors 11, 12, 21, 22, 31, 32, 41, 42, and 43. In the example shown in this embodiment, each of the multiple coil conductors 11, 12, 21, 22, 31, 32, 41, 42, and 43 has an elongated shape. In the example shown in this embodiment, each of the multiple coil conductors 10 is connected at its end to another coil conductor 10 among the multiple coil conductors 10. In the example shown in this embodiment, a region R surrounded by the multiple coil conductors 10 has a rectangular shape when viewed along the coil axis CA, i.e., the X-axis direction.

[0031] The multiple coil conductors 11, 12, 21, 22, 31, 32, 41, 42, and 43 are electrically connected to each other. In the example shown in this embodiment, the multiple coil conductors 11 and 12 are provided in the same layer. The multiple coil conductors 11 and 12 form a coil conductor layer 17. The multiple coil conductors 21 and 22 are provided in the same layer. The multiple coil conductors 21 and 22 form a coil conductor layer 27. The multiple coil conductors 31 and 32 are provided in the same layer. The multiple coil conductors 31 and 32 form a coil conductor layer 37. The multiple coil conductors 41, 42, and 43 are provided in the same layer. The multiple coil conductors 41, 42, and 43 form a coil conductor layer 47. The multiple coil conductor layers 17, 27, 37, and 47 are provided at different positions from each other in the X-axis direction.

[0032] The coil conductor 11 includes a pair of end portions 11a and 11b. The coil conductor 12 includes a pair of end portions 12a and 12b. The end portion 11a of the coil conductor 11 is exposed from the end surface 3e of the element body 2 and is connected to the end surface electrode portion 5a of the external electrode 5 at the end surface 3e. The end portion 11b of the coil conductor 11 and the end portion 12a of the coil conductor 12 are connected to each other.

[0033] The coil conductor 11 extends along the Y-axis direction. When viewed along the Z-axis direction, which is orthogonal to the direction of the coil axis CA of the coil CL and the Y-axis direction, the coil conductor 11 overlaps with a portion of the side electrode portion 6b that is closest to the coil conductor 11. When viewed along the Z-axis direction, the coil conductor 11 overlaps with an edge 6c of the side electrode portion 6b that faces the side electrode portion 5b in the Y-axis direction. In the example shown in this embodiment, when viewed along the Z-axis direction, the coil conductor 11 overlaps with the side electrode portion 6b that is provided on the side 3a of the pair of side surfaces 3a that is closer to the coil conductor 11. In the example shown in this embodiment, when viewed along the Z-axis direction, the coil conductor 11 overlaps with the side electrode portion 6b that is provided on each of the pair of side surfaces 3a.

[0034] The coil conductor 12 is connected to the end 11b of the coil conductor 11. The coil conductor 12 extends in the Z-axis direction. The longitudinal direction of the coil conductor 12 is perpendicular to the pair of side surfaces 3a. The entire coil conductor 12 overlaps with the side electrode portion 6b when viewed along the Z-axis direction.

[0035] The coil conductor 21 includes a pair of ends 21a, 21b. The coil conductor 22 includes a pair of ends 22a, 22b. The end 21b of the coil conductor 21 and the end 22a of the coil conductor 22 are connected to each other. The coil conductor 21 extends along the Y-axis direction. When viewed along the Z-axis direction, which is perpendicular to the direction of the coil axis CA of the coil CL and the Y-axis direction, the coil conductor 21 overlaps with a portion of the side electrode portion 5b closest to the coil conductor 21. When viewed along the Z-axis direction, the coil conductor 21 overlaps with a portion of the side electrode portion 6b closest to the coil conductor 21. The coil conductor 21 is connected to the end 12b of the coil conductor 12 via a via 51. The coil conductor 22 is connected to the end 21b of the coil conductor 21. The coil conductor 22 extends in the Z-axis direction. The longitudinal direction of the coil conductor 22 is perpendicular to the pair of side surfaces 3a. When viewed along the Z-axis direction, the entire coil conductor 22 overlaps with the side electrode portion 5b.

[0036] The coil conductor 31 includes a pair of ends 31a, 31b. The coil conductor 32 includes a pair of ends 32a, 32b. The end 31b of the coil conductor 31 and the end 32a of the coil conductor 32 are connected to each other. The coil conductor 31 extends along the Y-axis direction. When viewed along the Z-axis direction, which is perpendicular to the direction of the coil axis CA of the coil CL and the Y-axis direction, the coil conductor 31 overlaps with the portion of the side electrode portion 5b closest to the coil conductor 31. When viewed along the Z-axis direction, the coil conductor 31 overlaps with the portion of the side electrode portion 6b closest to the coil conductor 31. The coil conductor 31 is connected to the end 22b of the coil conductor 22 via a via 61. The coil conductor 32 is connected to the end 31b of the coil conductor 31. The coil conductor 32 extends in the Z-axis direction. The longitudinal direction of the coil conductor 32 is perpendicular to the pair of side surfaces 3a. When viewed along the Z-axis direction, the entire coil conductor 32 overlaps with the side electrode portion 5b.

[0037] The coil conductor 41 includes a pair of end portions 41a, 41b. The coil conductor 42 includes a pair of end portions 42a, 42b. The coil conductor 43 includes a pair of end portions 43a, 43b. The end portion 41b of the coil conductor 41 and the end portion 42a of the coil conductor 42 are connected to each other. The end portion 42b of the coil conductor 42 and the end portion 43a of the coil conductor 43 are connected to each other. The end portion 43b of the coil conductor 43 is exposed from the end surface 3f of the element body 2 and is connected to the end surface electrode portion 6a of the external electrode 6 at the end surface 3f.

[0038] The coil conductor 41 extends along the Y-axis direction. When viewed along the Z-axis direction, which is perpendicular to the direction of the coil axis CA of the coil CL and the Y-axis direction, the coil conductor 41 overlaps with the portion of the side electrode portion 5b that is closest to the coil conductor 41. When viewed along the Z-axis direction, the coil conductor 41 overlaps with the portion of the side electrode portion 6b that is closest to the coil conductor 41. The coil conductor 41 is connected to the end portion 32b of the coil conductor 32 via a via 51.

[0039] The coil conductor 42 is connected to the end 41b of the coil conductor 41. The coil conductor 42 extends in the Z-axis direction. The longitudinal direction of the coil conductor 42 is perpendicular to the pair of side surfaces 3a. The entire coil conductor 42 overlaps with the side electrode portion 5b when viewed along the Z-axis direction.

[0040] Coil conductor 43 extends along the Y-axis direction. When viewed along the Z-axis direction, coil conductor 43 overlaps with the portion of side electrode portion 5b that is closest to coil conductor 43. When viewed along the Z-axis direction, coil conductor 43 overlaps with edge 5c of side electrode portion 5b that faces side electrode portion 6b in the Y-axis direction.

[0041] The lead conductor 71 connects the external electrode 6 to a portion of the path of the coil CL that is located between the end CL2 and the end CL1. In the example shown in this embodiment, the lead conductor 71 connects the coil CL to the side electrode portion 6b of the external electrode 6. The lead conductor 71 extends in the Z-axis direction from the coil CL. The lead conductor 71 is connected to the external electrode 6 at one of the pair of side surfaces 3a that is closer to the connection portion between the lead conductor 71 and the coil CL. For example, the lead conductor 71 connects the external electrode 6 to a portion of the path of the coil CL that is closer to the end CL1 than the end CL2.

[0042] The coil CL includes a first conductor portion P1, a second conductor portion P2, and a third conductor portion P3. The first conductor portion P1 includes an end portion CL1. The second conductor portion P2 includes an end portion CL2. The third conductor portion P3 is disposed between the first conductor portion P1 and the second conductor portion P2 on the path of the coil CL. The lead conductor 71 connects at least one of the first conductor portion P1 and the third conductor portion P3 to the external electrode 6. In the example shown in this embodiment, the length of the second conductor portion P2 on the path of the coil CL is longer than the shortest distance between the third conductor portion P3 and the external electrode 6.

[0043] In the example shown in this embodiment, for example, the first conductor portion P1 corresponds to the coil conductor 11, the second conductor portion P2 corresponds to the coil conductor 43, and the third conductor portion P3 corresponds to the coil conductors 12, 21, 22, 31, 32, 41, and 42. The lead conductor 71 is connected to the first conductor portion P1. For example, the lead conductor 71 is connected to the coil conductor 11.

[0044] The contact area between the lead conductor 71 and the external electrode 6 is smaller than the contact area between the end CL2 and the external electrode 6. The contact area between the lead conductor 71 and the coil CL is 1 / 10 of the contact area between the coil CL and the external electrode 6 or less.

[0045] The coil CL is made of a conductive material. The internal conductor layers provided inside the electronic component 1 are made of a conductive material. The conductive material includes, for example, at least one selected from Ag and Pd.

[0046] Next, an electronic component 1A according to a modification of this embodiment will be described with reference to FIG. 6. FIG. 6 is a partial cross-sectional view of the electronic component taken along the YZ-axis plane in accordance with a modification of this embodiment. This modification is generally similar to or the same as the electronic component 1 according to the embodiment described above. This modification differs from the embodiment described above in that the configuration of the lead conductor is different. The following mainly describes the differences between the embodiment and the modification described above.

[0047] 6, the electronic component 1A further includes a coil CL and a lead conductor 71A. The lead conductor 71A connects a portion of the path of the coil CL that is located between the end CL2 and the end CL1 to the external electrode 6.

[0048] In this modification, the lead conductor 71A connects the coil CL and the end surface electrode portion 6a of the external electrode 6. The lead conductor 71A extends in the Y-axis direction from the coil CL. The lead conductor 71A is connected to the external electrode 6 at the end surface 3f. For example, the lead conductor 71A connects the external electrode 6 to a portion of the path of the coil CL that is closer to the end CL1 than the end CL2.

[0049] In this modification, for example, the first conductor portion P1 corresponds to the coil conductor 11, the second conductor portion P2 corresponds to the coil conductor 43, and the third conductor portion P3 corresponds to the coil conductors 12, 21, 22, 31, 32, 41, and 42. The lead conductor 71A is connected to the third conductor portion P3. For example, the lead conductor 71A is connected to the coil conductor 12.

[0050] The contact area between the lead conductor 71A and the external electrode 6 is smaller than the contact area between the end portion CL2 and the external electrode 6. The contact area between the lead conductor 71A and the coil CL is 1 / 10 of the contact area between the coil CL and the external electrode 6 or less.

[0051] Next, an electronic component 1B according to a modification of this embodiment will be described with reference to FIG. 7. FIG. 7 is a partial cross-sectional view of the electronic component taken along the YZ-axis plane in a modification of this embodiment. This modification is generally similar to or the same as the electronic components 1 and 1B according to the above-described embodiment. This modification differs from the above-described embodiment in that the lead conductors have different configurations. The following mainly describes the differences between the above-described embodiment and the modification.

[0052] 7, electronic component 1B further includes coil CL and multiple lead conductors 71, 71A, and 71B. For example, lead conductor 71 of electronic component 1B corresponds to lead conductor 71 of electronic component 1, and lead conductor 71A of electronic component 1B corresponds to lead conductor 71A of electronic component 1A. Lead conductor 71B connects a portion of the path of coil CL located between end CL2 and end CL1 to external electrode 6. The multiple lead conductors 71, 71A, and 71B are connected to coil CL at positions on the path of coil CL that are different in distance from each other to end CL1.

[0053] In this modification, the lead conductor 71B connects the coil CL and the side electrode portion 6b of the external electrode 6. The lead conductor 71B extends in the Z-axis direction from the coil CL. The lead conductor 71B is connected to the external electrode 6 at one of the pair of side surfaces 3a that is closest to the coil conductor 21. For example, the lead conductor 71B connects the external electrode 6 to a portion of the path of the coil CL that is closer to the end CL1 than the end CL2.

[0054] In this modification, for example, the first conductor portion P1 corresponds to the coil conductor 11, the second conductor portion P2 corresponds to the coil conductor 43, and the third conductor portion P3 corresponds to the coil conductors 12, 21, 22, 31, 32, 41, and 42. The lead conductor 71B is connected to the third conductor portion P3. For example, the lead conductor 71B is connected to the coil conductor 12.

[0055] The contact area between the lead conductor 71B and the external electrode 6 is smaller than the contact area between the end portion CL2 and the external electrode 6. The contact area between the lead conductor 71B and the coil CL is 1 / 10 of the contact area between the coil CL and the external electrode 6 or less.

[0056] Next, the effects of the electronic components 1, 1A, and 1B in this embodiment and the modified example will be described.

[0057] FIG. 8 is a graph showing the frequency characteristics of the L value. The L value corresponds to inductance. Data DA1 shows the frequency characteristics of the L value in an electronic component that has a coil CL but no lead conductor. Data DA2 shows the frequency characteristics of the L value in an electronic component in which the coil is short-circuited to the external electrode at a portion other than the end. Data DA3 shows the frequency characteristics of the L value in an electronic component 1 that has a lead conductor 71. The characteristics of data DA2 are significantly different from the characteristics of data DA1 and data DA3. No significant difference was observed in the characteristics between data DA1 and data DA3.

[0058] FIG. 9 is a graph showing the frequency characteristics of the Q value. The Q value corresponds to a quality factor. Data DA4 shows the frequency characteristics of the Q value of an electronic component that includes a coil CL but no lead conductor. Data DA5 shows the frequency characteristics of the Q value of an electronic component in which the coil is short-circuited to the external electrode at a portion other than the end. Data DA6 shows the frequency characteristics of the Q value of an electronic component 1 that includes a lead conductor 71. The characteristics of data DA5 are significantly different from the characteristics of data DA4 and data DA6. Data DA4 and data DA6 show similar characteristics in the low frequency band but significantly different characteristics in the high frequency band. In the high frequency band, the Q value of data DA4 changes significantly, while the change in the Q value of data DA6 is suppressed.

[0059] The electronic component 1 includes a lead conductor 71. The lead conductor 71 connects a portion of the path of the coil CL that is closer to the end CL1 than the end CL2 to the external electrode 6. The contact area between the lead conductor 71 and the external electrode 6 is smaller than the contact area between the end CL2 and the external electrode 6. After further research, the inventors of the present application found that, with this configuration, the change in the L value is suppressed while the change in the Q value is also suppressed for electrical signals in a relatively high frequency band. In other words, with this configuration, noise in a relatively high frequency band can be suppressed. Electronic components 1A and 1B also have a configuration similar to the above configuration and can achieve the same effects.

[0060] Electronic component 1B includes multiple lead conductors 71, 71A, and 71B. Each of the multiple lead conductors 71, 71A, and 71B is connected to coil CL at a position along the path of coil CL that is different in distance from the coil to end CL1. In this case, desired frequency characteristics can be easily obtained for the Q value.

[0061] In the example shown in this embodiment, the contact area between the lead conductor 71 and the coil CL is 1 / 10 or less of the contact area between the external electrode 6 and the coil CL. In this case, characteristic changes in the L value can be more reliably suppressed in the high frequency band, and characteristic changes in the Q value can also be suppressed. The same applies to the case where the contact areas between the lead conductors 71A and 71B and the coil CL are 1 / 10 or less of the contact area between the external electrode 6 and the coil CL.

[0062] In the example shown in this embodiment, the lead conductor 71 connects at least one of the first conductor portion P1 and the third conductor portion P3 to the external electrode 6. In this case, the potential difference with respect to the external electrode 6 is larger between the first conductor portion P1 and the third conductor portion P3 than between the second conductor portion P2. It is believed that this makes it easier to suppress changes in the Q value characteristics in the high frequency band.

[0063] The above describes embodiments and modifications of the present invention, but the present invention is not necessarily limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present invention.

[0064] For example, in the examples and modified examples shown in the above-described embodiments, the area surrounded by the multiple coil conductors 10 has a rectangular shape when viewed along the X-axis direction. However, the shape of the area surrounded by the multiple coil conductors 10 is not limited to this. For example, the area surrounded by the multiple coil conductors 10 may have a hexagonal shape or a polygonal shape with 10 or more sides when viewed along the X-axis direction. The area surrounded by the multiple coil conductors 10 does not have to have a strict polygonal shape, and the coil conductors 10 that make up the sides do not have to be linear.

[0065] In the examples and modifications shown in the above-described embodiment, the lead conductor 71 is connected to the coil conductor 11 of the coil conductor layer 17, and the lead conductors 71A and 71B are connected to the coil conductor 12 of the coil conductor layer 17. However, the positions to which the lead conductors are connected in the coil CL are not limited to this. For example, the lead conductors may be connected to at least one of the coil conductor layers 27, 37, and 47 instead of the coil conductor layer 17.

[0066] In the above-described modified example, electronic component 1B includes three lead conductors 71, 71A, and 71B. Electronic component 1B may also include four or more lead conductors.

[0067] As can be understood from the above description of the embodiments, the present specification includes disclosure of the following aspects. (Appendix 1) an element body having first and second end faces opposing each other in a first direction and a side face connecting the first and second end faces; a first external electrode including a first end surface electrode portion provided on the first end surface and a first side surface electrode portion provided on the side surface and extending from the first end surface toward the second end surface; a second external electrode including a second end surface electrode portion provided on the second end surface and a second side surface electrode portion provided on the side surface and extending from the second end surface toward the first end surface; a coil disposed inside the element body and including a first end connected to the first external electrode and a second end connected to the second external electrode; a lead conductor connecting a portion of the coil path located between the second end and the first end and the second external electrode, an area of ​​contact between the lead conductor and the second external electrode being smaller than an area of ​​contact between the second end and the second external electrode; (Appendix 2) The lead conductor includes a plurality of lead conductors, The electronic component of claim 1, wherein the plurality of lead conductors are connected to the coil at positions along the path of the coil that are at different distances to the first end. (Appendix 3) 2. The electronic component according to claim 1, wherein the contact area between the lead conductor and the coil is 1 / 10 or less of the contact area between the second external electrode and the coil. (Appendix 4) the coil includes a first conductor portion including the first end, a second conductor portion including the second end, and a third conductor portion disposed on a path of the coil between the first conductor portion and the second conductor portion; a length of the second conductor portion in the path of the coil is longer than the shortest distance between the third conductor portion and the second external electrode; 4. The electronic component according to claim 1, wherein the lead conductor connects at least one of the first conductor portion and the third conductor portion to the second external electrode. [Explanation of symbols]

[0068] 1, 1A, 1B...electronic component, 2...element body, 3a, 3c...side surface, 5, 6...external electrode, 5a, 6a...end surface electrode portion, 5b, 6b...side surface electrode portion, 71, 71A, 71B...lead-out conductor, CL...coil, CL1, CL2...end portion, P1...first conductor portion, P2...second conductor portion, P3...third conductor portion.

Claims

1. an element body having first and second end faces opposing each other in a first direction and a side face connecting the first and second end faces; a first external electrode including a first end surface electrode portion provided on the first end surface and a first side surface electrode portion provided on the side surface and extending from the first end surface toward the second end surface; a second external electrode including a second end surface electrode portion provided on the second end surface and a second side surface electrode portion provided on the side surface and extending from the second end surface toward the first end surface; a coil disposed inside the element body and including a first end connected to the first external electrode and a second end connected to the second external electrode; a lead conductor connecting a portion of the coil path located between the second end and the first end and the second external electrode, an area of ​​contact between the lead conductor and the second external electrode being smaller than an area of ​​contact between the second end and the second external electrode;

2. The lead conductor includes a plurality of lead conductors, The electronic component according to claim 1 , wherein the plurality of lead conductors are connected to the coil at positions along the path of the coil that are at different distances to the first end.

3. 2. The electronic component according to claim 1, wherein a contact area between the lead conductor and the coil is equal to or less than 1 / 10 of a contact area between the second external electrode and the coil.

4. the coil includes a first conductor portion including the first end, a second conductor portion including the second end, and a third conductor portion disposed on a path of the coil between the first conductor portion and the second conductor portion; a length of the second conductor portion in the path of the coil is longer than the shortest distance between the third conductor portion and the second external electrode; The electronic component according to claim 1 , wherein the lead conductor connects at least one of the first conductor portion and the third conductor portion to the second external electrode.

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