Coil components

Abstract

To provide a coil component that can suppress the reduction in strength of the coil connection point. [Solution] The coil component 1 comprises a base body 2, a first terminal electrode 3 and a second terminal electrode 4 arranged on the main surface 2d of the base body 2, and a coil 5 arranged inside the base body 2 and electrically connected to the first terminal electrode 3 and the second terminal electrode 4. The coil 5 includes a first wiring section 6 arranged on the main surface 2c side, a second wiring section 7 arranged on the main surface 2d side, and a pillar section 8 connecting the first wiring section 6 and the second wiring section 7. The pillar section 8 is composed of a plurality of pillar members 8A, 8B, 8C, and 8D arranged in the second direction D2, and the boundary between one adjacent pillar member and another pillar connecting member is offset from the central position C of the pillar section 8 in the second direction D2.

Description

Technical Field

[0001] The present disclosure relates to a coil component.

Background Art

[0002] Patent Document 1 discloses a coil component that includes: a body having a pair of end faces facing each other in a first direction, a mounting face and a main face facing each other in a second direction, and a pair of side faces facing each other in a third direction; a pair of terminal electrodes disposed on the mounting face of the body; and a coil disposed inside the body and electrically connected to the pair of terminal electrodes. The coil includes a plurality of first wiring portions disposed on the main face side and arranged side by side in the third direction, a plurality of second wiring portions disposed on the mounting face side and arranged side by side in the third direction, and a plurality of connection portions extending in the second direction and connecting the corresponding first wiring portions and second wiring portions.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] In a coil component, the connection portion is constituted by a plurality of connection members. The plurality of connection members are arranged so as to be stacked in the extending direction of the connection portion. Stress is applied to the connection portion connecting the first wiring portion and the second wiring portion from each of the first wiring portion and the second wiring portion. These stresses may be most concentrated at the central position in the extending direction of the connection portion in the connection portion. In this case, if the boundary (connection interface) where the two connection members are in contact with each other is located at the central position of the connection portion, the strength of the connection portion at the boundary portion may decrease.

[0005] One aspect of this disclosure aims to provide a coil component that can suppress a decrease in the strength of the coil connection. [Means for solving the problem]

[0006] (1) A coil component relating to one aspect of the present disclosure comprises a base body having a mounting surface and a main surface facing the mounting surface, a pair of terminal electrodes disposed on the mounting surface of the base body, and a coil disposed inside the base body and electrically connected to the pair of terminal electrodes, wherein the coil includes a first wiring section disposed on the main surface side, a second wiring section disposed on the mounting surface side, and a connecting section extending in the opposing direction between the mounting surface and the main surface and connecting the first wiring section and the second wiring section, wherein the connecting section is composed of a plurality of connecting members arranged in the opposing direction, and the boundary between one adjacent connecting member and another connecting member is offset from the central position of the connecting section in the opposing direction.

[0007] In one aspect of this disclosure, the coil component's connection is composed of multiple connecting members arranged in opposing directions. In this configuration, the boundary between one adjacent connecting member and another is offset from the central position of the connection in the opposing direction. As a result, even when stress is applied to the connection in the coil component, the boundary of the connecting members is not located at the central position where the stress is most concentrated, thus preventing stress from concentrating at the boundary. Therefore, the coil component can suppress a decrease in the strength of the coil's connection. Consequently, the coil component can suppress displacement at the boundary between two connecting members due to stress, thereby stabilizing the structure of the connection. Thus, the coil component can suppress a decrease in reliability.

[0008] (2) In the coil component described in (1) above, at least two of the multiple connecting members may have different lengths in the opposing directions. In this configuration, the connection portion includes connecting members of different lengths, which allows the boundaries between the connecting members to be offset from the central position.

[0009] (3) In the coil component described in (3) above, among a plurality of connecting members with different lengths in the opposing direction, the longer connecting member may be positioned closer to the main surface than the shorter connecting member. Since the first wiring section is positioned on the main surface side opposite to the mounting surface where the terminal electrodes are located, heat is not easily released to the circuit board on which the coil component is mounted. As a result, the first wiring section may experience significant thermal stress due to thermal expansion. Therefore, it is preferable that the boundary of the connection section be located away from the first wiring section in order to reduce the impact of thermal stress. In the above configuration, since the longer connecting member is positioned closer to the main surface than the shorter connecting member, the boundary of the connection section can be positioned away from the first wiring section.

[0010] (4) In any one of the coil components described in (1) to (3) above, each of the multiple connecting members has a first surface and a second surface that face each other in the opposing direction, and the first surface and the second surface have different areas, and the second surface of one adjacent connecting member may be positioned opposite the first surface of another connecting member. In this configuration, even if the position of one connecting member is shifted relative to another connecting member, one surface can be contained within the other surface because the areas of the first surface and the second surface are different. Therefore, a contact area between one connecting member and another connecting member can be secured. In this way, in a coil component, even if there is a shift in the arrangement (lamination) of one connecting member and another connecting member, a constant amount of contact area can be secured (the amount of change in contact area can be reduced). Therefore, in a coil component, variations in contact area between one connecting member and another connecting member can be suppressed. As a result, variations in characteristics can be suppressed in a coil component. [Effects of the Invention]

[0011] According to one aspect of this disclosure, it is possible to suppress a decrease in the strength of the coil connection. [Brief explanation of the drawing]

[0012] [Figure 1] Figure 1 is a perspective view of a coil component according to one embodiment. [Figure 2] Figure 2 is a view of the coil component shown in Figure 1, seen from the end face side. [Figure 3] Figure 3 shows the structure of the pillar section. [Figure 4] Figure 4 is a schematic diagram showing the shape of the pillar member in the pillar section. [Modes for carrying out the invention]

[0013] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0014] The coil component according to this embodiment will be described with reference to Figure 1. Figure 1 is a perspective view of the coil component according to one embodiment. As shown in Figure 1, the coil component 1 comprises a base body 2, a first terminal electrode 3 and a second terminal electrode 4, a coil 5, a first connecting conductor 10 (see Figure 2), and a second connecting conductor 11. In Figures 1 and 2, the base body 2 is shown by a dashed line. In Figure 1, the coil 5 is shown transparently.

[0015] Body 2 has a rectangular parallelepiped shape. The rectangular parallelepiped shape includes a rectangular parallelepiped with chamfered corners and edges, and a rectangular parallelepiped with rounded corners and edges. Body 2 has a pair of end faces 2a, 2b, a pair of main faces 2c, 2d, and a pair of side faces 2e, 2f as its outer surfaces. The end faces 2a, 2b face each other. The main faces 2c, 2d face each other. The side faces 2e, 2f face each other. Hereafter, the opposing direction of the end faces 2a, 2b will be referred to as the first direction D1, the opposing direction of the main faces 2c, 2d as the second direction D2, and the opposing direction of the side faces 2e, 2f as the third direction D3. The first direction D1, the second direction D2, and the third direction D3 are approximately orthogonal to each other.

[0016] The end faces 2a and 2b extend in the second direction D2 so as to connect the main surfaces 2c and 2d. The end faces 2a and 2b also extend in the third direction D3 so as to connect the side faces 2e and 2f. The main surfaces 2c and 2d extend in the first direction D1 so as to connect the end faces 2a and 2b. The main surfaces 2c and 2d also extend in the third direction D3 so as to connect the side faces 2e and 2f. The side faces 2e and 2f extend in the first direction D1 so as to connect the end faces 2a and 2b. The side faces 2e and 2f also extend in the second direction D2 so as to connect the main surfaces 2c and 2d.

[0017] The main surface 2d is a mounting surface, and is, for example, a surface that faces another electronic device (such as a circuit base material or a coil component) when the coil component 1 is mounted on the other electronic device (not illustrated). The end faces 2a and 2b are surfaces continuous from the mounting surface (that is, the main surface 2d).

[0018] In the case of the embodiments illustrated in FIG. 1 and FIG. 2, the length of the element body 2 in the first direction D1 is longer than 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. The length of the element body 2 in the second direction D2 is shorter than the length of the element body 2 in the third direction D3. That is, in the present embodiment, the end faces 2a, 2b, the main surfaces 2c, 2d, and the side faces 2e, 2f each have a rectangular shape. The length of the element body 2 in the second direction D2 may be equal to the length of the element body 2 in the third direction D3, or may be longer than the length of the element body 2 in the third direction D3.

[0019] Note that, in the present embodiment, "equal" may refer to not only being exactly the same, but also values including minor differences or manufacturing errors within a preset range may be regarded as equal. For example, if a plurality of values are within a range of ±1.5% of the average value of the plurality of values, the plurality of values are defined to be equal.

[0020] The element body 2 is formed by laminating a plurality of element body layers (insulating layers) in the second direction D2. That is, the lamination direction of the element body 2 is the second direction D2. In the actual element body 2, the plurality of element body layers may be integrated to such an extent that the boundaries between the layers are not visible, or may be integrated such that the boundaries between the layers are visible.

[0021] The element body layer may be, for example, a resin layer. The material of the element body layer includes at least one selected from, for example, liquid crystal polymer, polyimide resin, crystalline polystyrene, epoxy resin, acrylic resin, bismaleimide resin, and fluororesin. The element body layer may contain a filler. The filler may be, for example, an inorganic filler. Examples of the inorganic filler include silica (SiO₂). The element body layer does not need to contain a filler.

[0022] The element body layer may be configured to include a magnetic material. The magnetic material of the element body layer includes, for example, a Ni-Cu-Zn based ferrite material, a Ni-Cu-Zn-Mg based ferrite material, or a Ni-Cu based ferrite material. The magnetic material of the element body layer may include, for example, an Fe alloy. The element body layer may include, for example, a non-magnetic material. The non-magnetic material of the element body layer includes, for example, a glass ceramic material or a dielectric material.

[0023] Each of the first terminal electrode 3 and the second terminal electrode 4 is provided on the element body 2. Each of the first terminal electrode 3 and the second terminal electrode 4 is arranged on the main surface 2d of the element body 2. The first terminal electrode 3 and the second terminal electrode 4 are provided on the element body 2 so as to be spaced apart from each other in the first direction D1. Specifically, the first terminal electrode 3 is arranged on the end face 2a side of the element body 2. The second terminal electrode 4 is arranged on the end face 2b side of the element body 2.

[0024] Each of the first terminal electrode 3 and the second terminal electrode 4 may have, for example, a rectangular shape. Each of the first terminal electrode 3 and the second terminal electrode 4 is arranged such that each side extends along the first direction D1 or the third direction D3. As shown in FIG. 2, the first terminal electrode 3 and the second terminal electrode 4 are embedded in the element body 2. The first terminal electrode 3 and the second terminal electrode 4 do not protrude beyond the main surface 2d. In the present embodiment, the respective surfaces of the first terminal electrode 3 and the second terminal electrode 4 are flush with the main surface 2d. The first terminal electrode 3 and the second terminal electrode 4 are made of a conductive material (for example, Cu).

[0025] Each of the first terminal electrode 3 and the second terminal electrode 4 may be provided with a plating layer (not shown) containing, for example, Ni, Sn, or Au, by electroplating or electroless plating. The plating layer may have, for example, a Ni plating film containing Ni that covers the first terminal electrode 3 and the second terminal electrode 4, and an Au plating film containing Au that covers the Ni plating film.

[0026] As shown in Figures 1 and 2, the coil 5 is located within the base body 2. The coil 5 has a plurality of first wiring sections 6, a plurality of second wiring sections 7, and a plurality of pillar sections (connecting sections) 8. The coil 5 is constructed by electrically connecting the first wiring sections 6, the second wiring sections 7, and the pillar sections 8. The coil axis of the coil 5 is provided along a third direction D3. The plurality of first wiring sections 6, the plurality of second wiring sections 7, and the plurality of pillar sections 8 are made of a conductive material (for example, Cu). The first wiring sections 6, the second wiring sections 7, and the pillar sections 8 are spaced apart from the end faces 2a, 2b, the main faces 2c, 2d, and the side faces 2e, 2f.

[0027] Each of the first wiring sections 6 is positioned on the main surface 2c side of the base body 2. Each of the first wiring sections 6 extends along the first direction D1. Each of the first wiring sections 6 connects two pillar sections 8. The first wiring section 6 spans across the two pillar sections 8. One end of the first wiring section 6 in the direction of extension (the end on the end face 2a side) is connected to one end of the pillar section 8 (the end on the main surface 2c side). The other end of the first wiring section 6 in the direction of extension (the end on the end face 2b side) is connected to one end of the pillar section 8 (the end on the main surface 2c side).

[0028] Each of the second wiring sections 7 is located on the main surface 2d (mounting surface) side of the base body 2. Each of the second wiring sections 7 extends in the first direction D1. Each of the second wiring sections 7 connects two pillar sections 8. The second wiring section 7 spans across the two pillar sections 8. One end of the second wiring section 7 in the direction of extension (the end on the end face 2a side) is connected to the other end of the pillar section 8 (the end on the main surface 2d side). The other end of the second wiring section 7 in the direction of extension (the end on the end face 2b side) is connected to the other end of the pillar section 8 (the end on the main surface 2d side). The number of multiple second wiring sections 7 is one less than the number of multiple first wiring sections 6. That is, if there are n first wiring sections 6, there will be n-1 second wiring sections 7.

[0029] Each of the multiple pillar sections 8 is positioned on either the end face 2a or end face 2b side of the base body 2. Each of the multiple pillar sections 8 extends along the second direction D2. The pillar sections 8 connect the first wiring section 6 and the second wiring section 7. One end of the pillar section 8 is connected to one end of the first wiring section 6. The other end of the pillar section 8 is connected to one end of the second wiring section 7.

[0030] The first connecting conductor 10 connects the first terminal electrode 3 to one end of the coil 5. The first connecting conductor 10 is connected to the other end of the pillar portion 8 of the coil 5. The first connecting conductor 10 is positioned closer to the end face 2a and closer to the side surface 2e. The first connecting conductor 10 is made of a conductive material. For example, the first connecting conductor 10 is made of Cu.

[0031] The second connecting conductor 11 connects the second terminal electrode 4 to the other end of the coil 5. The second connecting conductor 11 is connected to the other end of the pillar portion 8 of the coil 5. The second connecting conductor 11 is positioned near the end face 2b and near the side surface 2f. The second connecting conductor 11 is made of a conductive material. For example, the second connecting conductor 11 is made of Cu.

[0032] Next, the pillar section 8 will be explained in detail. Figure 3 is a diagram showing the configuration of the pillar section 8. As shown in Figure 3, the pillar section 8 is composed of multiple pillar members (connecting members). In this embodiment, the pillar section 8 is composed of four pillar members 8A, 8B, 8C, and 8D. The four pillar members 8A, 8B, 8C, and 8D are arranged (stacked) in the second direction D2. In this embodiment, the pillar members are arranged in the order of pillar member 8D, pillar member 8C, pillar member 8B, and pillar member 8A from the main surface 2d side of the base body 2. In other words, the pillar members are arranged in the order of pillar member 8A, pillar member 8B, pillar member 8C, and pillar member 8D from the main surface 2c side of the base body 2.

[0033] Each of the four pillar members 8A, 8B, 8C, and 8D extends in the second direction D2. In this embodiment, the length L1 of pillar member 8A in the second direction D2 is equal to the length L2 of pillar member 8B in the second direction D2 (L1=L2). The length L3 of pillar member 8C in the second direction D2 is equal to the length L4 of pillar member 8D in the second direction D2 (L3=L4). In this embodiment, the lengths L1 of pillar member 8A and L2 of pillar member 8B are different from the lengths L3 of pillar member 8C and L4 of pillar member 8D. The lengths L1 of pillar member 8A and L2 of pillar member 8B are longer than the lengths L3 of pillar member 8C and L4 of pillar member 8D (L1,L2>L3,L4).

[0034] In this embodiment, the length L1 of pillar member 8A and the length L2 of pillar member 8B are, for example, 35 μm. The length L3 of pillar member 8C and the length L4 of pillar member 8D are, for example, 25 μm.

[0035] In the pillar section 8, the pillar members 8A and 8B, which have a longer length in the second direction D2, are positioned closer to the main surface 2c of the base body 2 than the pillar members 8C and 8D, which have a shorter length. In the pillar section 8, the pillar members 8C and 8D, which have a shorter length in the second direction D2, are positioned closer to the main surface 2d than the pillar members 8A and 8B, which have a longer length.

[0036] In the pillar section 8, the boundaries (connection interfaces) of the pillar members 8A, 8B, 8C, and 8D are offset from the central position C in the second direction D2 of the pillar section 8. The central position C is at the 1 / 2 position of the length L(L1+L2+L3+L4) of the second direction D2 of the pillar section 8. That is, the central position C is at the L / 2 position from each end of the second direction D2 of the pillar section 8. In this embodiment, the boundary B1 between pillar member 8A and pillar member 8B, the boundary B2 between pillar member 8B and pillar member 8C, and the boundary B3 between pillar member 8C and pillar member 8D are offset from the central position C in the second direction D2 of the pillar section 8. Boundary B1 is located on the main surface 2c side of the base body 2 than the central position C. Boundaries B2 and B3 are located on the main surface 2d side of the base body 2 than the central position C. Boundary B1 can also be described as the joint between pillar member 8A and pillar member 8B. Boundary B2 can also be described as the joint between pillar member 8B and pillar member 8C. Boundary B3 can also be described as the joint between pillar member 8C and pillar member 8D.

[0037] Figure 4 schematically shows the shapes of the pillar members 8A, 8B, 8C, and 8D of the pillar section 8. As shown in Figure 4, each of the pillar members 8A, 8B, 8C, and 8D has a trapezoidal shape when viewed from the third direction D3 (first direction D1). Each of the pillar members 8A, 8B, 8C, and 8D has a frustoconical shape. Each of the pillar members 8A, 8B, 8C, and 8D has a first surface S1 and a second surface S2 that face each other in the second direction D2. The first surface S1 and the second surface S2 have different areas. In this embodiment, for each of the pillar members 8A, 8B, 8C, and 8D, the area of ​​the first surface S1 on the main surface 2c side of the base body 2 is larger than the area of ​​the second surface S2 on the main surface 2d side. In this embodiment, the area of ​​the second surface S2 of pillar member 8C and the second surface S2 of pillar member 8D are larger than the area of ​​the second surface S2 of pillar member 8A and the second surface S2 of pillar member 8D. The area of ​​the first surface S1 of each of pillar members 8A, 8B, 8C, and 8D is equal.

[0038] The second surface S2 of pillar member 8A faces the first surface S1 of pillar member 8B. Boundary B1 is formed by the second surface S2 of pillar member 8A and the first surface S1 of pillar member 8B. The second surface S2 of pillar member 8B faces the first surface S1 of pillar member 8C. Boundary B2 is formed by the second surface S2 of pillar member 8B and the first surface S1 of pillar member 8C. The second surface S2 of pillar member 8C faces the first surface S1 of pillar member 8D. Boundary B3 is formed by the second surface S2 of pillar member 8C and the first surface S1 of pillar member 8D.

[0039] As described above, in the coil component 1 according to this embodiment, the pillar portion 8 is composed of a plurality of pillar members 8A, 8B, 8C, and 8D arranged in the second direction D2. In this configuration, the boundary B1 between pillar member 8A and pillar member 8B, the boundary B2 between pillar member 8B and pillar member 8C, and the boundary B3 between pillar member 8C and pillar member 8D are offset from the central position C in the second direction D2 of the pillar portion 8. As a result, even when stress is applied to the pillar portion 8 in the coil component 1, the boundaries B1, B2, and B3 are not located at the central position C where the stress is most concentrated, so stress does not concentrate at the boundaries B1, B2, and B3. Therefore, the coil component 1 can suppress a decrease in the strength of the pillar portion 8 of the coil 5. As a result, the coil component 1 can suppress displacement of the boundaries B1, B2, and B3 due to stress, thereby stabilizing the structure of the pillar portion 8. Therefore, the coil component 1 can suppress a decrease in reliability.

[0040] In the coil component 1 according to this embodiment, among the multiple pillar members 8A, 8B, 8C, 8D, the pillar members 8A, 8B and the pillar members 8C, 8D have different lengths in the second direction D2. In this configuration, by including multiple pillar members 8A, 8B, 8C, 8D with different lengths in the pillar portion 8, the boundaries B1, B2, B3 between the multiple pillar members 8A, 8B, 8C, 8D can be shifted from the central position C.

[0041] In the coil component 1 according to this embodiment, among the multiple pillar members 8A, 8B, 8C, and 8D, the longer pillar members 8A and 8B are positioned closer to the main surface 2c of the base body 2 than the shorter pillar members 8C and 8D. Since the first wiring section 6 is positioned on the main surface 2c side facing the main surface 2d of the base body 2 where the first terminal electrode 3 and the second terminal electrode 4 poles are located, heat is not easily released to the circuit board on which the coil component 1 is mounted. As a result, the first wiring section 6 may experience large thermal stress due to thermal expansion. Therefore, it is preferable that the boundary of the pillar section 8 be located away from the first wiring section 6 in order to reduce the impact of thermal stress. In the above configuration, since the longer pillar members 8A and 8B are positioned closer to the main surface 2c of the base body 2 than the shorter pillar members 8C and 8D, the boundary B1 of the pillar section 8 can be positioned away from the first wiring section 6.

[0042] In the coil component 1 according to this embodiment, each of the multiple pillar members 8A, 8B, 8C, and 8D has a first surface S1 and a second surface S2 that face each other in a second direction D2. The first surface S1 and the second surface S2 have different areas. In the coil component 1, the second surface S2 of one adjacent pillar member and the first surface S1 of another pillar member are arranged facing each other. In this configuration, even if the position of one pillar member is shifted relative to another pillar member, one surface can fit within the other surface because the areas of the first surface S1 and the second surface S2 are different. Therefore, a contact area between one pillar member and another pillar member can be secured. Thus, in the coil component 1, even if there is a shift in the arrangement (stacking) of one pillar member and another pillar member, a constant amount of contact area can be secured (the amount of change in contact area can be reduced). Therefore, in the coil component 1, variations in the contact area between one pillar member and another pillar member can be suppressed. As a result, variations in the characteristics of coil component 1 can be suppressed.

[0043] While embodiments of the present invention have been described above, the present invention is not necessarily limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention.

[0044] In the above embodiment, a configuration in which the pillar section 8 is composed of four pillar members 8A, 8B, 8C, and 8D was described as an example. However, the pillar section 8 only needs to have at least two pillar members.

[0045] In the above embodiment, one example was described in which the longer pillar members 8A and 8B are positioned closer to the main surface 2c of the base body 2 than the shorter pillar members 8C and 8D. However, the shorter pillar members 8C and 8D may also be positioned closer to the main surface 2c of the base body 2 than the longer pillar members 8A and 8B.

[0046] In the above embodiment, a configuration in which each of the four pillar members 8A, 8B, 8C, and 8D has a trapezoidal shape was described as an example. However, each of the four pillar members 8A, 8B, 8C, and 8D may have other shapes.

[0047] In the above embodiment, a configuration in which the surfaces of the first terminal electrode 3 and the second terminal electrode 4 are flush with the main surface 2d was described as an example. However, the surfaces of the first terminal electrode 3 and the second terminal electrode 4 may protrude from the main surface 2d. [Explanation of Symbols]

[0048] 1...Coil component, 2...Base body, 2c...Main surface, 2d...Main surface (mounting surface), 5...Coil, 6...First wiring section, 7...Second wiring section, 8...Pillar section (connection section), B1, B2, B3...Boundary, C...Center position, D2...Second direction, S1...First surface, S2...Second surface.

Claims

1. A base body having multiple insulating layers stacked together, and having a mounting surface and a main surface facing the mounting surface, A pair of terminal electrodes arranged on the mounting surface of the base body, The body comprises a coil disposed within the aforementioned body and electrically connected to a pair of terminal electrodes, The coil includes a first wiring section located on the main surface side, a second wiring section located on the mounting surface side, and a connecting section that extends in the direction opposite to the mounting surface and the main surface and connects the first wiring section and the second wiring section. The aforementioned connection portion is composed of a plurality of connecting members arranged in the opposing direction, A coil component in which the boundary between one adjacent connecting member and another connecting member is offset from the central position of the connecting portion in the opposing direction.

2. The coil component according to claim 1, wherein at least two of the plurality of connecting members have different lengths in the opposing directions.

3. The coil component according to claim 2, wherein, among the plurality of connecting members having different lengths in the opposing direction, the longer connecting member is positioned closer to the main surface than the shorter connecting member.

4. Each of the plurality of connecting members has a first surface and a second surface that face each other in the opposing direction, The first surface and the second surface have different areas. The coil component according to claim 1 or 2, wherein the second surface of one adjacent connecting member and the first surface of the other connecting member are arranged facing each other.

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