Inductor Components

Abstract

To obtain an inductance value that is different for each inductor wire.SOLUTION: An inductor component 10 includes an element assembly 20, a plurality of inductor wires 30, a plurality of columnar wires 40, and a plurality of external electrodes 60. The element assembly 20 includes a first main surface 20A. An axis that is parallel to an edge of the first main surface 20A is a first axis X. Each inductor wire 30 includes a wire main body, a first end pad connected to a first end of the wire main body and having a large wire width with respect to the wire main body, and a second end pad connected to a second end of the wire main body and having a large wire width with respect to the wire main body. A geometric center of the first end pad of each inductor wire 30 exists on the same line that is parallel to the first axis X. One or more geometric centers of the second pad of each inductor wire 30 does not exist on the same line that is parallel to the first axis X.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an inductor component. [Background technology]

[0002] The inductor component described in Patent Document 1 includes an element body, three inductor wires, and six external electrodes. The element body is a rectangular parallelepiped having a main surface. The element body includes a magnetic material. The external electrodes are exposed from the main surface. A pair of external electrodes is provided for each inductor wire. That is, the inductor component has three sets of external electrodes. The pair of external electrodes is positioned opposite each other across the main surface. Each set of external electrodes is arranged at equal intervals in a direction along one side of the main surface. Each inductor wire extends in a spiral shape. Each inductor wire is connected to the pair of external electrodes. Like the external electrodes, each inductor wire is arranged at equal intervals in a direction along one side of the main surface. Furthermore, each inductor wire has the same wiring width and number of turns. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-075537 Summary of the Invention [Problem to be solved by the invention]

[0004] The inductor components described in Patent Document 1 all have the same wiring width and number of turns. That is, the inductance value that can be obtained from each inductor wiring is approximately the same. However, there are cases where it is desired to change the inductance value that can be obtained by switching the inductor wiring through which current flows. The inductor component described in Patent Document 1 is not suitable for such applications. [Means for solving the problem]

[0005] In order to solve the above-mentioned problems, the present invention provides an inductor component comprising: an element body having a main surface; a plurality of inductor wirings extending within the element body parallel to the main surface; a plurality of pillar-shaped wirings connected to ends of the inductor wirings and extending in a direction intersecting the main surface; and a plurality of external electrodes connected to the pillar-shaped wirings and exposed from the main surface, wherein the main surface is rectangular when viewed from a direction perpendicular to the main surface; and when an axis parallel to an edge of the main surface is defined as a first axis, each of the inductor wirings has a wiring body, a first end pad connected to the first end of the wiring body and having a wiring width greater than that of the wiring body, and a second end pad connected to the second end of the wiring body and having a wiring width greater than that of the wiring body, wherein the geometric centers of the first end pads of each of the inductor wirings are located on the same straight line parallel to the first axis, and one or more of the geometric centers of the second end pads of each of the inductor wirings are not located on the same straight line parallel to the first axis.

[0006] According to the above configuration, the distance between the first end pad and the second end pad in a direction perpendicular to the first axis of a specific inductor wiring is different from the distance between the first end pad and the second end pad in a direction perpendicular to the first axis of another inductor wiring. This difference in pad position makes it easy to design different wiring lengths for the wiring body of each inductor wiring. Therefore, it is possible to obtain different inductance values for each inductor wiring. [Effects of the Invention]

[0007] It is possible to obtain different inductance values for each inductor wiring. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of an inductor component. [Figure 2] FIG. 2 is a plan view of the inductor component. [Figure 3] FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. [Figure 4] FIG. 4 is a plan view of an inductor component according to a modified example. [Figure 5] FIG. 5 is a plan view of an inductor component according to a modified example. [Figure 6] FIG. 6 is a plan view of an inductor component according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of an inductor component will be described below. Note that the drawings may show components enlarged to facilitate understanding. The dimensional ratios of the components may differ from those in the actual components or from those in other drawings.

[0010] <Overall structure> 1, the inductor component 10 includes an element body 20, a plurality of inductor wirings 30, a plurality of columnar wirings 40, and a plurality of external electrodes 60. Furthermore, as shown in FIG.

[0011] The element body 20 contains a magnetic material. Specifically, the material of the element body 20 is a synthetic resin containing a magnetic metal powder such as Fe. Examples of the synthetic resin include epoxy resin, polyimide resin, acrylic resin, and phenol resin.

[0012] As shown in FIG. 1, the element body 20 has a rectangular parallelepiped shape as a whole. That is, the element body 20 has six outer surfaces. Of these six outer surfaces, one of the two largest outer surfaces is designated as a first main surface 20A. Of the six outer surfaces, a surface parallel to the first main surface 20A is designated as a second main surface 20B. That is, when viewed in a direction perpendicular to the first main surface 20A, the first main surface 20A and the second main surface 20B are quadrangular. Specifically, the first main surface 20A and the second main surface 20B are rectangular. The first main surface 20A is the mounting surface that faces the substrate when the inductor component 10 is mounted on the substrate. In addition, in FIGS. 1 and 2, the element body 20 is illustrated by a two-dot chain line.

[0013] In the following description, an axis parallel to the long side of the first main surface 20A is referred to as the first axis X. That is, the first axis X is an axis parallel to the edge of the first main surface 20A. An axis parallel to the short side of the first main surface 20A is referred to as the second axis Y. An axis perpendicular to the first main surface 20A is referred to as the third axis Z. A specific direction along the first axis X is referred to as the first positive direction X1, and a direction opposite to the first positive direction X1 is referred to as the first negative direction X2. A specific direction along the second axis Y is referred to as the second positive direction Y1, and a direction opposite to the second positive direction Y1 is referred to as the second negative direction Y2. A direction along the third axis Z in which the first main surface 20A faces is referred to as the third positive direction Z1, and a direction opposite to the third positive direction Z1 is referred to as the third negative direction Z2.

[0014] 3, element body 20 includes a first layer L1, a second layer L2, and a third layer L3. The maximum dimension of element body 20 in the direction along third axis Z is approximately 0.13 mm. That is, the sum of the thickness of first layer L1, the thickness of second layer L2, and the thickness of third layer L3 is approximately 0.13 mm. That is, the maximum dimension of element body 20 in the direction along third axis Z is 0.15 mm or less.

[0015] The first layer L1 has a rectangular shape when seen through in the direction along the third axis Z. The first layer L1 is located at the end of the element body 20 on the third negative direction Z2 side. In other words, the end face of the first layer L1 in the third negative direction Z2 is the second main surface 20B. The first layer L1 is made of a first magnetic layer 21.

[0016] The second layer L2 has the same rectangular shape as the first layer L1 when viewed in the direction along the third axis Z. The second layer L2 is stacked on the surface of the first layer L1 on the third positive direction Z1 side. The second layer L2 has a second magnetic layer 22 and three inductor wirings 30. The portion of the second layer L2 other than the three inductor wirings 30 constitutes the second magnetic layer 22. The shape and arrangement of each inductor wiring 30 will be described later.

[0017] The third layer L3 has the same rectangular shape as the first layer L1 and the second layer L2 when viewed in the direction along the third axis Z. The third layer L3 is stacked on the surface of the second layer L2 on the third positive direction Z1 side. The third layer L3 has a third magnetic layer 23, six pillar-shaped wirings 40, and six vias 50. The portion of the third layer L3 excluding the six pillar-shaped wirings 40 and the six vias 50 constitutes the third magnetic layer 23. The shape and arrangement of each pillar-shaped wiring 40 and each via 50 will be described later.

[0018] 3, the boundaries between the first layer L1 to the third layer L3 are indicated by imaginary dashed lines. On the other hand, the adjacent first magnetic layer 21, second magnetic layer 22, and third magnetic layer 23 may be integrated with one another. In other words, there may not be clear boundaries between the adjacent first magnetic layer 21, second magnetic layer 22, and third magnetic layer 23.

[0019] <About the thickness of each layer of the element> As shown in FIG. 3, the dimension H1 of the first layer L1 in the direction along the third axis Z is 0.02 mm. The dimension H2 of the second layer L2 in the direction along the third axis Z is 0.04 mm. The dimension H3 of the third layer L3 in the direction along the third axis Z is 0.07 mm. That is, the shortest distance from the first main surface 20A to the inductor wiring 30 is 0.04 mm or more. Furthermore, the shortest distance from the first main surface 20A to the inductor wiring 30 is at least twice the shortest distance from the second main surface 20B to the inductor wiring 30.

[0020] <Inductor wiring> Each inductor wiring 30 is made of a conductive material. For example, the inductor wiring 30 contains at least one of Cu, Ag, Au, Ni, and Al as the conductive material. Alternatively, for example, the inductor wiring 30 may contain an alloy containing at least two of Cu, Ag, Au, Ni, and Al as the conductive material.

[0021] As shown in FIG. 1, the three inductor wirings 30 are a first inductor wiring 31, a second inductor wiring 32, and a third inductor wiring 33. 3, the first inductor wiring 31 extends parallel to the first main surface 20A within the element body 20. Specifically, the first inductor wiring 31 extends on the surface of the first layer L1 facing the third positive direction Z1. The first inductor wiring 31 also has a wiring main body 31A, a first end pad 31B, and a second end pad 31C.

[0022] 2, the wiring body 31A of the first inductor wiring 31 extends in a spiral shape when viewed in a direction perpendicular to the first main surface 20A. Here, of the ends of the wiring body 31A of the first inductor wiring 31, the end located on the second positive direction Y1 side with respect to the geometric center of the element body 20 is referred to as the first end. Also, of the ends of the wiring body 31A of the first inductor wiring 31, the end located on the second negative direction Y2 side with respect to the geometric center of the element body 20 is referred to as the second end.

[0023] When seen through in a direction perpendicular to the first main surface 20A, the wiring body 31A of the first inductor wiring 31 has a spiral shape whose diameter decreases from the first end to the second end. The wiring body 31A of the first inductor wiring 31 has a constant wiring width MW1. The wiring width MW1 is a dimension parallel to the first main surface 20A and perpendicular to the extension direction of the wiring body 31A of the first inductor wiring 31.

[0024] The distance BW1 between the wiring bodies 31A of the first inductor wiring 31 is ⅓ or less of the wiring width MW1 of the first inductor wiring 31. That is, the shortest distance between the wiring bodies of the first inductor wiring 31 is ⅓ or less of the minimum wiring width of the first inductor wiring 31. The distance BW1 between the wiring bodies 31A is approximately constant over the entire area. Note that the distance BW1 between the wiring bodies 31A of the first inductor wiring 31 is the distance between the wiring bodies 31A in a direction perpendicular to the extension direction of the wiring bodies 31A.

[0025] The first end pad 31B of the first inductor wiring 31 is connected to the first end of the wiring main body 31A. When viewed in a direction perpendicular to the first main surface 20A, the first end pad 31B of the first inductor wiring 31 has a substantially rectangular shape with long sides extending along the first axis X. When viewed in a direction perpendicular to the first main surface 20A, the wiring width of the first end pad 31B of the first inductor wiring 31 is larger than the wiring width MW1 of the wiring main body 31A. Note that, when viewed in a direction perpendicular to the third axis Z, the wiring width of the first end pad 31B is the dimension of the first end pad 31B in a direction perpendicular to the extension direction of the wiring main body 31A at the connection point between the first end pad 31B and the wiring main body 31A. In other words, the wiring width of the first end pad 31B of the first inductor wiring 31 is the dimension in the direction along the second axis Y. As shown in FIG. 3, the first end pad 31B of the first inductor wiring 31 is connected to the pillar wiring 40 through a via 50.

[0026] As shown in FIG. 2, the second end pad 31C of the first inductor wiring 31 is connected to the second end of the wiring main body 31A. When viewed in a direction perpendicular to the first main surface 20A, the second end pad 31C of the first inductor wiring 31 has a substantially rectangular shape with long sides extending along the first axis X. When viewed in a direction perpendicular to the first main surface 20A, the wiring width of the second end pad 31C of the first inductor wiring 31 is larger than the wiring width MW1 of the wiring main body 31A. The wiring width of the second end pad 31C of the first inductor wiring 31 is the dimension in the direction along the second axis Y. As shown in FIG. 3, the second end pad 31C of the first inductor wiring 31 is connected to the columnar wiring 40 through a via 50.

[0027] The number of turns of the first inductor wiring 31 is 2.5. Note that the number of turns of the first inductor wiring 31 refers to the total number of turns from the outer periphery of the first end pad 31B, through the outer periphery of the wiring body 31A, to the outer periphery of the second end pad 31C.

[0028] Here, the number of turns of each inductor wiring 30 is determined based on a virtual vector. The starting point of the virtual vector is located on a virtual line that passes through any edge of the wiring width of the inductor wiring 30, including the pad, and extends in the extension direction of the inductor wiring 30. The virtual vector is tangent to the virtual line that extends in the extension direction of the inductor wiring 30 when viewed in the direction along the third axis Z.

[0029] When the starting point of a virtual vector is placed at one end of a virtual line and then moved to the other end of the virtual line, the number of turns is defined as 1.0 turn when the angle by which the virtual vector rotates is 360°. Therefore, if the direction of the virtual vector is rotated by 180°, for example, the number of turns is 0.5 turn.

[0030] As shown in FIG. 1, the second inductor wiring 32 extends parallel to the first main surface 20A within the element body 20. The configuration of the second inductor wiring 32 is similar to the configuration of the first inductor wiring 31. Specifically, the second inductor wiring 32 extends on the surface of the first layer L1 facing the third positive direction Z1. That is, the second inductor wiring 32 extends on the same plane as the first inductor wiring 31. The second inductor wiring 32 is located on the first negative direction X2 side with respect to the first inductor wiring 31. The second inductor wiring 32 also has a wiring main body 32A, a first end pad 32B, and a second end pad 32C.

[0031] 2, the wiring body 32A of the second inductor wiring 32 extends in a spiral shape when viewed in a direction perpendicular to the first main surface 20A. Here, of the ends of the wiring body 32A of the second inductor wiring 32, the end located on the second positive direction Y1 side with respect to the geometric center of the element body 20 is referred to as a first end. Also, of the ends of the wiring body 32A of the second inductor wiring 32, the end located on the second negative direction Y2 side with respect to the geometric center of the element body 20 is referred to as a second end.

[0032] When viewed in a direction perpendicular to the first main surface 20A, the wiring body 32A of the second inductor wiring 32 has a spiral shape whose diameter decreases from the first end to the second end. The wiring body 32A of the second inductor wiring 32 extends in a spiral shape in the same direction as the wiring body 31A of the first inductor wiring 31.

[0033] The wiring width MW2 of the wiring body 32A of the second inductor wiring 32 is constant. The wiring width MW2 is a dimension parallel to the first main surface 20A and perpendicular to the extension direction of the wiring body 32A of the second inductor wiring 32. The wiring width MW2 of the wiring body 32A of the second inductor wiring 32 is the same as the wiring width MW1 of the wiring body 31A of the first inductor wiring 31.

[0034] The distance BW2 between the wiring bodies 32A of the second inductor wiring 32 is ⅓ or less of the wiring width MW2 of the second inductor wiring 32. That is, the shortest distance between the wiring bodies of the second inductor wiring 32 is ⅓ or less of the minimum wiring width of the second inductor wiring 32. The distance BW2 between the wiring bodies 32A is approximately constant over the entire area. Note that the distance BW2 between the wiring bodies 32A of the second inductor wiring 32 is the distance between the wiring bodies 32A in a direction perpendicular to the extension direction of the wiring bodies 32A.

[0035] The first end pad 32B of the second inductor wiring 32 is connected to the first end of the wiring main body 32A. When viewed in a direction perpendicular to the first main surface 20A, the first end pad 32B of the second inductor wiring 32 has a substantially rectangular shape with long sides extending along the first axis X. When viewed in a direction perpendicular to the first main surface 20A, the wiring width of the first end pad 32B of the second inductor wiring 32 is larger than the wiring width MW2 of the wiring main body 32A. Note that, when viewed in a direction perpendicular to the third axis Z, the wiring width of the first end pad 32B is the dimension of the first end pad 32B in a direction perpendicular to the extension direction of the wiring main body 32A at the connection point between the first end pad 32B and the wiring main body 32A. In other words, the wiring width of the first end pad 32B of the second inductor wiring 32 is the dimension in the direction along the second axis Y. The first end pad 32B of the second inductor wiring 32 is connected to the pillar wiring 40 through a via 50.

[0036] 2, the second end pad 32C of the second inductor wiring 32 is connected to the second end of the wiring main body 32A. When viewed in a direction perpendicular to the first main surface 20A, the second end pad 32C of the second inductor wiring 32 has a substantially rectangular shape with long sides extending along the first axis X. When viewed in a direction perpendicular to the first main surface 20A, the wiring width of the second end pad 32C of the second inductor wiring 32 is larger than the wiring width MW2 of the wiring main body 32A. The wiring width of the second end pad 32C of the second inductor wiring 32 is the dimension in the direction along the first axis X. The second end pad 32C of the second inductor wiring 32 is connected to the columnar wiring 40 through a via 50.

[0037] The number of turns of the second inductor wiring 32 is 2.5. Note that the number of turns of the second inductor wiring 32 refers to the total number of turns from the outer periphery of the first end pad 32B, through the outer periphery of the wiring body 32A, to the outer periphery of the second end pad 32C.

[0038] As shown in FIG. 1 , the third inductor wiring 33 extends parallel to the first main surface 20A within the element body 20. Specifically, the third inductor wiring 33 extends on the surface of the first layer L1 facing the third positive direction Z1. The configuration of the third inductor wiring 33 is similar to the configuration of the first inductor wiring 31. That is, the third inductor wiring 33 extends on the same plane as the first inductor wiring 31. The third inductor wiring 33 is located on the opposite side of the first inductor wiring 31 with respect to the second inductor wiring 32. The third inductor wiring 33 also has a wiring main body 33A, a first end pad 33B, and a second end pad 33C.

[0039] 2, the wiring body 33A of the third inductor wiring 33 extends in a spiral shape when viewed in a direction perpendicular to the first main surface 20A. Here, of the ends of the wiring body 33A of the third inductor wiring 33, the end located on the second positive direction Y1 side with respect to the geometric center of the element body 20 is referred to as a first end. Also, of the ends of the wiring body 33A of the third inductor wiring 33, the end located on the second negative direction Y2 side with respect to the geometric center of the element body 20 is referred to as a second end.

[0040] When viewed in a direction perpendicular to the first main surface 20A, the wiring body 33A of the third inductor wiring 33 has a spiral shape whose diameter decreases from the first end to the second end. The wiring body 33A of the third inductor wiring 33 extends in a spiral shape in the same direction as the wiring body 31A of the first inductor wiring 31.

[0041] The wiring width MW3 of the wiring body 33A of the third inductor wiring 33 is constant. The wiring width MW3 is a dimension parallel to the first main surface 20A and perpendicular to the extension direction of the wiring body 33A of the third inductor wiring 33. The wiring width MW3 of the wiring body 33A of the third inductor wiring 33 is the same as the wiring width MW1 of the wiring body 31A of the first inductor wiring 31.

[0042] The distance BW3 between the wiring bodies 33A of the third inductor wiring 33 is ⅓ or less of the wiring width MW3 of the third inductor wiring 33. That is, the shortest distance between the wiring bodies of the third inductor wiring 33 is ⅓ or less of the minimum wiring width of the third inductor wiring 33. The distance BW3 between the wiring bodies 33A is approximately constant over the entire area. Note that the distance BW3 between the wiring bodies 33A of the third inductor wiring 33 is the distance between the wiring bodies 33A in a direction perpendicular to the extension direction of the wiring bodies 33A.

[0043] The first end pad 33B of the third inductor wiring 33 is connected to the first end of the wiring main body 33A. When viewed in a direction perpendicular to the first main surface 20A, the first end pad 33B of the third inductor wiring 33 has a substantially rectangular shape with long sides extending along the first axis X. When viewed in a direction perpendicular to the first main surface 20A, the wiring width of the first end pad 33B of the third inductor wiring 33 is larger than the wiring width MW3 of the wiring main body 33A. Note that, when viewed in a direction perpendicular to the third axis Z, the wiring width of the first end pad 33B is the dimension of the first end pad 33B in a direction perpendicular to the extension direction of the wiring main body 33A at the connection point between the first end pad 33B and the wiring main body 33A. In other words, the wiring width of the first end pad 33B of the third inductor wiring 33 is the dimension in the direction along the second axis Y. The first end pad 33B of the third inductor wiring 33 is connected to the columnar wiring 40 through a via 50.

[0044] As shown in FIG. 2, the second end pad 33C of the third inductor wiring 33 is connected to the second end of the wiring main body 33A. When viewed in a direction perpendicular to the first main surface 20A, the second end pad 33C of the third inductor wiring 33 has a substantially rectangular shape with long sides extending along the first axis X. When viewed in a direction perpendicular to the first main surface 20A, the wiring width of the second end pad 33C of the third inductor wiring 33 is larger than the wiring width MW3 of the wiring main body 33A. The wiring width of the second end pad 33C of the third inductor wiring 33 is the dimension in the direction along the first axis X. The second end pad 33C of the third inductor wiring 33 is connected to the columnar wiring 40 through a via 50.

[0045] The number of turns of the third inductor wiring 33 is 1.5. That is, the number of turns of the third inductor wiring 33 is different from the number of turns of the first inductor wiring 31 and the number of turns of the second inductor wiring 32. Note that the number of turns of the third inductor wiring 33 refers to the total number of turns from the outer periphery of the first end pad 33B, through the outer periphery of the wiring body 33A, to the outer periphery of the second end pad 33C.

[0046] Here, of the three spirally extending inductor wirings 30, the first inductor wiring 31 or the second inductor wiring 32 is defined as the specific inductor wiring. In this case, the number of turns of the specific inductor wiring, 2.5, is greater than the number of turns of the third inductor wiring 33, 1.5.

[0047] 2, when viewed in a direction perpendicular to the first main surface 20A, the region surrounded by the outermost periphery of the first inductor wiring 31 and the region surrounded by the outermost periphery of the second inductor wiring 32 do not overlap with each other. Furthermore, the region surrounded by the outermost periphery of the second inductor wiring 32 and the region surrounded by the outermost periphery of the third inductor wiring 33 do not overlap with each other. Furthermore, the region surrounded by the outermost periphery of the first inductor wiring 31 and the region surrounded by the outermost periphery of the third inductor wiring 33 do not overlap with each other. Note that the outermost periphery of the inductor wiring 30 refers to the circumference located at the outermost edge of the spiral of the inductor wiring 30 when viewed in a direction perpendicular to the central axis of the spiral.

[0048] <About vias and pillar wiring> As shown in FIG. 3 , six vias 50 are located on the surface of the second layer L2 of the element body 20 facing the third positive direction Z1. Specifically, two of the six vias 50 are located on the first end pad 31B of the first inductor wiring 31 and the second end pad 31C of the first inductor wiring 31. The other two of the six vias 50 are located on the first end pad 32B of the second inductor wiring 32 and the second end pad 32C of the second inductor wiring 32. The remaining vias 50 are located on the first end pad 33B of the third inductor wiring 33 and the second end pad 33C of the third inductor wiring 33. The material of the six vias 50 is the same as that of each inductor wiring 30. Note that FIG. 3 illustrates only the vias 50 located on the first end pad 31B of the first inductor wiring 31 and the second end pad 31C of the first inductor wiring 31.

[0049] As shown in FIG. 1, each of the pillar-shaped wirings 40 has a substantially quadrangular pillar shape. The material of each of the pillar-shaped wirings 40 is the same as the material of each of the inductor wirings 30. As shown in FIG. 3, each of the pillar-shaped wirings 40 extends in a direction perpendicular to the first main surface 20A. Specifically, each of the pillar-shaped wirings 40 extends from above the via 50 to the surface of the third layer L3 on the third positive direction Z1 side. Note that FIG. 3 shows only two of the pillar-shaped wirings 40 connected to the first inductor wiring 31.

[0050] The six pillar-shaped wirings 40 are two first pillar-shaped wirings 41, two second pillar-shaped wirings 42, and two third pillar-shaped wirings 43. The two first pillar-shaped wirings 41 are further divided into a first end pillar-shaped wiring 41A and a second end pillar-shaped wiring 41B.

[0051] 3 , the first end columnar wiring 41A is connected to a first end of the first inductor wiring 31 through a via 50. Specifically, the first end columnar wiring 41A is connected to a first end pad 31B of the first inductor wiring 31 through the via 50. In addition, an end face of the first end columnar wiring 41A on the third positive direction Z1 side is exposed from the element body 20.

[0052] 2, when viewed in a direction perpendicular to the first main surface 20A, the first end columnar wiring 41A has a substantially rectangular shape with long sides extending along the first axis X. The dimensions of the first end columnar wiring 41A along the first axis X and the dimensions of the first end columnar wiring 41A along the second axis Y are smaller than the dimensions of the first end pad 31B of the first inductor wiring 31. Therefore, when viewed see-through in the third positive direction Z1, the first end columnar wiring 41A does not protrude from the first end pad 31B of the first inductor wiring 31.

[0053] 3, the second end columnar wiring 41B is connected to the second end of the first inductor wiring 31 through the via 50. Specifically, the second end columnar wiring 41B is connected to the second end pad 31C of the first inductor wiring 31 through the via 50. An end face of the second end columnar wiring 41B on the third positive direction Z1 side is exposed from the element body 20.

[0054] 2, when viewed in a direction perpendicular to the first main surface 20A, the second end columnar wiring 41B has a substantially rectangular shape with long sides extending along the first axis X. The dimensions of the second end columnar wiring 41B along the first axis X and the second axis Y are smaller than the dimensions of the second end pad 31C of the first inductor wiring 31. Therefore, when viewed see-through in the third positive direction Z1, the second end columnar wiring 41B does not protrude from the second end pad 31C of the first inductor wiring 31.

[0055] As shown in FIG. 2, the two second columnar wirings 42 are further divided into a first end columnar wiring 42A and a second end columnar wiring 42B. The first end columnar wire 42A of the second columnar wire 42 is connected to a first end of the second inductor wire 32 through a via 50. Specifically, the first end columnar wire 42A is connected to a first end pad 32B of the second inductor wire 32 through the via 50. An end face of the first end columnar wire 42A on the third positive direction Z1 side is exposed from the element body 20.

[0056] When viewed in a direction perpendicular to the first main surface 20A, the first end columnar wiring 42A has a generally rectangular shape with long sides extending along the first axis X. The dimensions of the first end columnar wiring 42A along the first axis X and the dimensions of the first end columnar wiring 42A along the second axis Y are smaller than the dimensions of the first end pad 32B of the second inductor wiring 32. Therefore, when viewed see-through in the third positive direction Z1, the first end columnar wiring 42A does not protrude from the first end pad 32B of the second inductor wiring 32.

[0057] The second end columnar wiring 42B is connected to the second end of the second inductor wiring 32 through the via 50. Specifically, the second end columnar wiring 42B is connected to the second end pad 32C of the second inductor wiring 32 through the via 50. An end face of the second end columnar wiring 42B on the third positive direction Z1 side is exposed from the element body 20.

[0058] When viewed in a direction perpendicular to the first main surface 20A, the second end columnar wiring 42B has a generally rectangular shape with long sides extending along the second axis Y. The dimensions of the second end columnar wiring 42B in the direction along the first axis X and the direction along the second axis Y are smaller than the dimensions of the second end pad 32C of the second inductor wiring 32. Therefore, when viewed see-through in the third positive direction Z1, the second end columnar wiring 42B does not protrude from the second end pad 32C of the second inductor wiring 32.

[0059] The two third columnar wirings 43 are further divided into a first end columnar wiring 43A and a second end columnar wiring 43B. 2, the first end columnar wire 43A of the third columnar wire 43 is connected to a first end of the third inductor wire 33 through a via 50. Specifically, the first end columnar wire 43A is connected to a first end pad 33B of the third inductor wire 33 through the via 50. In addition, an end face of the first end columnar wire 43A on the third positive direction Z1 side is exposed from the element body 20.

[0060] When viewed in a direction perpendicular to the first main surface 20A, the first end columnar wiring 43A has a substantially rectangular shape with long sides extending along the first axis X. The dimensions of the first end columnar wiring 43A along the first axis X and the second axis Y are smaller than the dimensions of the first end pad 33B of the third inductor wiring 33. Therefore, when viewed see-through in the third positive direction Z1, the first end columnar wiring 43A does not protrude from the first end pad 33B of the third inductor wiring 33.

[0061] The second end columnar wiring 43B is connected to a second end of the third inductor wiring 33 through the via 50. Specifically, the second end columnar wiring 43B is connected to a second end pad 33C of the third inductor wiring 33 through the via 50. An end face of the second end columnar wiring 43B on the third positive direction Z1 side is exposed from the element body 20.

[0062] When viewed in a direction perpendicular to the first main surface 20A, the second end columnar wiring 43B has a substantially rectangular shape with long sides extending along the first axis X. The dimensions of the second end columnar wiring 43B along the first axis X and the second axis Y are smaller than the dimensions of the second end pad 33C of the third inductor wiring 33. Therefore, when viewed see-through in the third positive direction Z1, the second end columnar wiring 43B does not protrude from the second end pad 33C of the third inductor wiring 33.

[0063] <About external electrodes> 3, each external electrode 60 is located on the first main surface 20A of the element body 20. That is, each external electrode 60 is exposed from the first main surface 20A. Furthermore, each external electrode 60 is connected to a corresponding columnar wiring 40.

[0064] Each external electrode 60 includes a first electrode layer 60A, a second electrode layer 60B, and a third electrode layer 60C. The first electrode layer 60A, the second electrode layer 60B, and the third electrode layer 60C are made of different materials.

[0065] The first electrode layer 60A is located closest to the element body 20 in the external electrode 60. The first electrode layer 60A is connected to the columnar wiring 40. The material of the first electrode layer 60A is Cu. The dimension of the first electrode layer 60A in the direction along the third axis Z is smaller than the dimension of each inductor wiring 30 in the direction along the third axis Z.

[0066] The second electrode layer 60B is stacked on the surface of the first electrode layer 60A facing the third positive direction Z1. The second electrode layer 60B is made of nickel. The dimension of the second electrode layer 60B in the direction along the third axis Z is approximately the same as the dimension of the first electrode layer 60A in the direction along the third axis Z.

[0067] The third electrode layer 60C is stacked on the surface of the second electrode layer 60B facing the third positive direction Z1. The material of the third electrode layer 60C is Au. The third electrode layer 60C is the surface layer of the external electrode 60 that is farthest from the first electrode layer 60A. The dimension of the third electrode layer 60C in the direction along the third axis Z is smaller than the dimension of the first electrode layer 60A in the direction along the third axis Z.

[0068] Furthermore, the dimension of each external electrode 60, including the first electrode layer 60A, the second electrode layer 60B, and the third electrode layer 60C, in the direction along the third axis Z is equal to or less than half the dimension of each inductor wiring 30 in the direction along the third axis Z. Specifically, the dimension of each external electrode 60 in the direction along the third axis Z is 0.01 mm. As described above, the total thickness of the first layer L1, the second layer L2, and the third layer L3, i.e., the thickness of the element body 20, is approximately 0.13 mm. Therefore, the maximum dimension of the entire inductor component 10, including the element body 20 and the external electrodes 60, in the direction perpendicular to the third axis Z is 0.2 mm or less.

[0069] As shown in FIG. 1, the plurality of external electrodes 60 includes two first external electrodes 61, two second external electrodes 62, and two third external electrodes 63. The first external electrode 61 is further divided into a first end electrode 61A and a second end electrode 61B. The first end electrode 61A and the second end electrode 61B are disposed symmetrically in the direction along the second axis Y. In other words, the position of the first end electrode 61A in the direction along the first axis X coincides with the position of the second end electrode 61B in the direction along the first axis X.

[0070] 2, the first end electrode 61A of the first external electrode 61 is located at a corner on the first positive direction X1 side and the second positive direction Y1 side of the element body 20. The first end electrode 61A of the first external electrode 61 is connected to the first end columnar wire 41A of the first columnar wire 41.

[0071] The second end electrode 61B of the first external electrode 61 is located at a corner on the first positive direction X1 side and the second negative direction Y2 side of the element body 20. The second end electrode 61B of the first external electrode 61 is connected to a second end columnar wire 41B of the first columnar wire 41.

[0072] 1, the second external electrode 62 is further divided into a first end electrode 62A and a second end electrode 62B. The first end electrode 62A and the second end electrode 62B are disposed symmetrically in the direction along the second axis Y. In other words, the position of the first end electrode 62A in the direction along the first axis X coincides with the position of the second end electrode 62B in the direction along the first axis X.

[0073] 2, the first end electrode 62A of the second external electrode 62 is located on the first negative direction X2 side with respect to the first end electrode 62A of the first external electrode 61. That is, the first end electrode 62A of the second external electrode 62 is aligned in the direction along the first axis X with a gap between them and the first end electrode 61A of the first external electrode 61. The first end electrode 62A of the second external electrode 62 is connected to the first end columnar wiring 42A of the second columnar wiring 42.

[0074] The second end electrode 62B of the second external electrode 62 is located on the first negative direction X2 side with respect to the second end electrode 61B of the first external electrode 61. That is, the second end electrode 62B of the second external electrode 62 is aligned in the direction along the first axis X with a gap between them and the second end electrode 61B of the first external electrode 61. The second end electrode 62B of the second external electrode 62 is connected to the second end columnar wiring 42B of the second columnar wiring 42.

[0075] 1, the third external electrode 63 is further divided into a first end electrode 63A and a second end electrode 63B. The first end electrode 63A and the second end electrode 63B are disposed symmetrically in the direction along the second axis Y. In other words, the position of the first end electrode 63A in the direction along the first axis X coincides with the position of the second end electrode 63B in the direction along the first axis X.

[0076] 2, the first end electrode 63A of the third external electrode 63 is located on the first negative direction X2 side with respect to the first end electrode 62A of the second external electrode 62. That is, the first end electrode 63A of the third external electrode 63 is aligned in the direction along the first axis X with a gap between them and the first end electrode 62A of the second external electrode 62. The first end electrode 63A of the third external electrode 63 is connected to the first end columnar wiring 43A of the third columnar wiring 43.

[0077] The second end electrode 63B of the third external electrode 63 is located on the first negative direction X2 side with respect to the second end electrode 62B of the second external electrode 62. That is, the second end electrode 63B of the third external electrode 63 is aligned in the direction along the first axis X with a gap between them and the second end electrode 62B of the second external electrode 62. The second end electrode 63B of the third external electrode 63 is connected to the second end columnar wiring 42B of the third columnar wiring 43.

[0078] <Insulating layer> The inductor component 10 includes an insulating layer 70. The insulating layer 70 is located on the first main surface 20A of the element body 20. The insulating layer 70 is also located around each external electrode 60. That is, the insulating layer 70 covers the first main surface 20A excluding each external electrode 60. In this embodiment, the insulating layer 70 is a solder resist. The dimension of the insulating layer 70 in the direction along the third axis Z is substantially the same as the dimension of the external electrode 60 in the direction along the third axis Z.

[0079] <Shape and arrangement of external electrodes> 2, when viewed in a direction perpendicular to the first main surface 20A, the external electrodes 60 are all rectangular with the same aspect ratio. Furthermore, the external electrodes 60 are all the same size. That is, when viewed in a direction perpendicular to the first main surface 20A, the external electrodes 60 all have the same area.

[0080] Here, the external electrode 60 connected via the columnar wiring 40 to the end of the inductor wiring 30 located furthest to the first negative direction X2 among the multiple inductor wirings 30 is defined as a specific external electrode SP. That is, in this embodiment, the specific external electrodes SP are two third external electrodes 63. Here, the shortest distance SL1 from each first external electrode 61 to an edge of the first main surface 20A located on the first positive direction X1 side with respect to the first external electrode 61 is equal to the shortest distance SL2 from the specific external electrode SP to the edge of the first main surface 20A located on the first negative direction X2 side with respect to the specific external electrode SP. That is, the shortest distance SL1 between the first external electrode 61 and a short side of the first main surface 20A perpendicular to the first axis X is equal to the shortest distance SL2 between each specific external electrode SP and a short side of the first main surface 20A perpendicular to the first axis X.

[0081] 2, the shortest distance SD1 between the first end electrode 61A and the second end electrode 61B connected to the first inductor wiring 31 is equal to the shortest distance SD2 between the first end electrode 62A and the second end electrode 62B connected to the second inductor wiring 32. Furthermore, the shortest distance SD3 between the first end electrode 63A and the second end electrode 63B connected to the third inductor wiring 33 is equal to the shortest distance SD1 between the first end electrode 61A and the shortest distance SD2 between the second end electrode 61B connected to the first inductor wiring 31.

[0082] The external electrodes 60 are arranged at equal intervals in the direction along the first axis X. Specifically, the geometric center of each external electrode 60 when viewed in the direction along the third axis Z is defined as the geometric center OE. In this case, the geometric center OE of the first end electrode 61A, the geometric center OE of the first end electrode 62A, and the geometric center OE of the first end electrode 63A are arranged at equal intervals parallel to the first axis X. Similarly, the geometric center OE of the second end electrode 61B, the geometric center OE of the second end electrode 62B, and the geometric center OE of the second end electrode 63B are arranged at equal intervals parallel to the first axis X.

[0083] <About the shape of pillar wiring> 3, the maximum dimension of the third layer L3 along the third axis Z is equal to the maximum dimension of the columnar wirings 40 and the vias 50 combined along the third axis Z. That is, the maximum dimension of the columnar wirings 40 and the vias 50 combined along the third axis Z is 0.07 mm. Furthermore, the maximum dimension of each columnar wiring 40 along the third axis Z is 0.06 mm. The maximum dimension of the vias 50 along the third axis Z is 0.01 mm.

[0084] As described above, the maximum dimension of the second layer L2 in the direction along the third axis Z is 0.04 mm. That is, the maximum dimension of the inductor wiring 30 in the direction along the third axis Z is 0.04 mm. That is, the maximum dimension of the columnar wiring 40 in the direction along the third axis Z is 1.5 times or more the maximum dimension of the inductor wiring 30 in the direction along the third axis Z.

[0085] <Inductor wiring layout> In this embodiment, when viewed in a direction perpendicular to the first main surface 20A, each inductor wiring 30 has a rectangular spiral shape as a whole. Of the three inductor wirings 30, the first inductor wiring 31 has the longest wiring length. The wiring lengths of the second inductor wiring 32 and the third inductor wiring 33 are shortest in this order. As shown in FIG. 2 , of the three inductor wirings 30, the first inductor wiring 31 has the largest inner diameter. That is, the inner diameters of the second inductor wiring 32 and the third inductor wiring 33 are smaller than the inner diameter of the first inductor wiring 31. The inner diameter of the second inductor wiring 32 is smaller than the inner diameter of the third inductor wiring 33. The inner diameters of the inductor wirings 30 are defined as follows:

[0086] When the inductor wiring 30 extends in a spiral shape and is viewed in a direction perpendicular to the central axis of the spiral, the inner diameter is the maximum dimension of the innermost circumference of the spiral of the inductor wiring 30. In this embodiment, the inner diameter is a diagonal line that can be drawn from the inner edge of the inductor wiring 30 located on the first negative direction X2 side and the second negative direction Y2 side to the inner edge of the inductor wiring 30 located on the first positive direction X1 side and the second positive direction Y1 side.

[0087] When viewed in a direction perpendicular to the first main surface 20A, the first inductor wiring 31 has a portion that overlaps with the second external electrode 62. Specifically, when viewed in a direction perpendicular to the first main surface 20A, the first inductor wiring 31 has a portion that overlaps with the first end electrode 62A of the second external electrode 62 and a portion that overlaps with the second end electrode 62B of the second external electrode 62. The first inductor wiring 31 overlaps with the first end electrode 62A and the second end electrode 62B at the outermost circumference of the spiral shape.

[0088] Furthermore, when viewed in a direction perpendicular to the first main surface 20A, the second inductor wiring 32 has a portion that overlaps with the third external electrode 63. Specifically, when viewed in a direction perpendicular to the first main surface 20A, the second inductor wiring 32 has a portion that overlaps with the first end electrode 63A of the third external electrode 63 and a portion that overlaps with the second end electrode 63B of the third external electrode 63. The second inductor wiring 32 overlaps with the first end electrode 63A and the second end electrode 63B at the outermost periphery of the spiral shape.

[0089] When viewed in a perspective view in a direction perpendicular to the first main surface 20A, the third inductor wiring 33 does not have a portion that overlaps with an external electrode 60 connected to another inductor wiring 30. In other words, when viewed in a perspective view in a direction perpendicular to the first main surface 20A, the third inductor wiring 33 does not overlap with the first end electrodes 61A, 62A and the second end electrodes 61B, 62B.

[0090] <Inductor wiring pad shape> 2, when viewed in a direction perpendicular to the first main surface 20A, the size and shape of the first end pad 31B of the first inductor wiring 31 are the same as the size and shape of the first end pad 32B of the second inductor wiring 32. Furthermore, the size and shape of the first end pad 31B of the first inductor wiring 31 are the same as the size and shape of the first end pad 33B of the third inductor wiring 33. In other words, the three first end pads 31B, 32B, and 33B all have the same size and shape.

[0091] When viewed in a direction perpendicular to the first main surface 20A, the size and shape of the second end pad 31C of the first inductor wiring 31 are different from the size and shape of the second end pad 32C of the second inductor wiring 32. Specifically, the dimension of the second end pad 31C of the first inductor wiring 31 in the direction along the first axis X is smaller than the dimension of the second end pad 32C of the second inductor wiring 32 in the direction along the first axis X. In other words, one or more selected from the size and shape of the second end pad 31C of the first inductor wiring 31 are different from one or more selected from the size and shape of the second end pad 32C of the second inductor wiring 32. In this embodiment, the size of the second end pad 31C of the first inductor wiring 31 is different from the size of the second end pad 32C of the second inductor wiring 32. Furthermore, the shape of the second end pad 31C of the first inductor wiring 31 is different from the shape of the second end pad 32C of the second inductor wiring 32. That is, both the size and shape of the second end pad 31C of the first inductor wiring 31 are different from the size and shape of the second end pad 32C of the second inductor wiring 32. On the other hand, the size and shape of the second end pad 31C of the first inductor wiring 31 are the same as the size and shape of the second end pad 33C of the third inductor wiring 33. In this way, of the three second end pads 31C, 32C, and 33C, only the second end pad 32C is larger than the other second end pads 31C and 33C.

[0092] In one or more of the inductor wirings 30, when viewed in a perspective view perpendicular to the first main surface 20A, the two pads of the inductor wiring 30 have the same size and shape. Specifically, as shown in FIG. 2, the size and shape of the first end pad 31B of the first inductor wiring 31 in each inductor wiring 30 are the same as the size and shape of the second end pad 31C. The size and shape of the first end pad 33B of the third inductor wiring 33 are also the same as the size and shape of the second end pad 33C. On the other hand, the size and shape of the first end pad 32B of the second inductor wiring 32 are different from the size and shape of the second end pad 32C. In other words, of the six pads, only the second end pad 32C of the second inductor wiring 32 has a different size and shape from the other pads.

[0093] <Pad placement for inductor wiring> 2, when viewed in a direction perpendicular to the first main surface 20A, the geometric centers of the first end pads of each inductor wiring 30 are located on the same straight line parallel to the direction along the first axis X. That is, the geometric center CR1 of the first end pad 31B of the first inductor wiring 31, the geometric center CR2 of the first end pad 32B of the second inductor wiring 32, and the geometric center CR3 of the first end pad 33B of the third inductor wiring 33 are located on the same straight line parallel to the first axis X.

[0094] Furthermore, when viewed in a direction perpendicular to the first main surface 20A, the geometric centers of the second end pads of each inductor wiring 30 are not located on the same line parallel to the first axis X. Specifically, the geometric center CL1 of the second end pad 31C of the first inductor wiring 31 and the geometric center CL2 of the second end pad 32C of the second inductor wiring 32 are located on the same line parallel to the first axis X. On the other hand, the geometric center CL3 of the second end pad 33C of the third inductor wiring 33 is not located on the line passing through the geometric centers CL1 and CL2. In this embodiment, the geometric center CL3 of the second end pad 33C of the third inductor wiring 33 is located on the second negative direction Y2 side with respect to the geometric centers CL1 and CL2.

[0095] <Regarding the placement of pillar wiring> Each pillar-shaped wiring 40 is located at a position eccentric to the corresponding external electrode 60. Specifically, the geometric center OP of the surface of each pillar-shaped wiring 40 exposed from the first main surface 20A when viewed in the direction along the third axis Z is defined as the geometric center OP. In this case, the geometric center OP of each pillar-shaped wiring 40 is shifted from the geometric center OE of the external electrode 60 connected to that pillar-shaped wiring 40. In other words, the geometric center OP of each pillar-shaped wiring 40 does not coincide with the geometric center OE of the external electrode 60.

[0096] Here, a vector extending from the geometric center OP of the first end columnar wire 41A of the first columnar wire 41 to the geometric center OE of the first end electrode 61A of the first external electrode 61 is defined as a first vector BC1. A vector extending from the geometric center OP of the first end columnar wire 42A of the second columnar wire 42 to the geometric center OE of the first end electrode 62A of the second external electrode 62 is defined as a second vector BC2. In this case, the first vector BC1 is different from the second vector BC2. Specifically, the direction of the first vector BC1 is different from the direction of the second vector BC2, and the magnitude of the first vector BC1 is different from the magnitude of the second vector BC2.

[0097] A vector extending from the geometric center OP of the first end columnar wire 43A of the third columnar wire 43 to the geometric center OE of the first end electrode 63A of the third external electrode 63 is designated as a fifth vector BC5. The first vector BC1 is different from the fifth vector BC5. The second vector BC2 is also different from the fifth vector BC5.

[0098] Also, a vector extending from the geometric center OP of the second end columnar wire 41B of the first columnar wire 41 to the geometric center OE of the second end electrode 61B of the first external electrode 61 is defined as a third vector BC3. In this case, the first vector BC1 is different from the third vector BC3. Specifically, the direction of the first vector BC1 is different from the direction of the third vector BC3, and the magnitude of the first vector BC1 is different from the magnitude of the third vector BC3.

[0099] The second columnar wire 42 and the third columnar wire 43 also have a similar relationship with the third vector BC3 relative to the direction of the first vector BC1 in the first columnar wire 41. A vector extending from the geometric center OP of the second end columnar wire 42B of the second columnar wire 42 to the geometric center OE of the second end electrode 62B of the second external electrode 62 is defined as a fourth vector BC4. The second vector BC2 is different from the fourth vector BC4. Similarly, a vector extending from the geometric center OP of the second end columnar wire 43B of the third columnar wire 43 to the geometric center OE of the second end electrode 63B of the third external electrode 63 is defined as a sixth vector BC6. In this case, the fifth vector BC5 is different from the sixth vector BC6.

[0100] Furthermore, for the first columnar wire 41, suppose an imaginary line segment L is drawn connecting the geometric center OP of the first end columnar wire 41A and the geometric center OP of the second end columnar wire 41B. At this time, the line segment L is not parallel to either the first axis X or the second axis Y. Although not shown, for the second columnar wire 42, suppose an imaginary line segment is drawn connecting the geometric center OP of the first end columnar wire 42A and the geometric center OP of the second end columnar wire 42B. Similarly, for the third columnar wire 43, suppose an imaginary line segment is drawn connecting the geometric center OP of the first end columnar wire 43A and the geometric center OP of the second end columnar wire 43B. These two imaginary line segments are also not parallel to the first axis X and the second axis Y.

[0101] In the direction along the first axis X, a part or all of the range in which the first end columnar wire 41A exists overlaps with the range in which the second end columnar wire 41B exists. That is, when the element body 20 is seen through in the direction along the second axis Y, the first end columnar wire 41A and the second end columnar wire 41B of the first columnar wire 41 overlap. The same applies to the second columnar wire 42 and the third columnar wire 43. That is, the first end columnar wire 42A and the second end columnar wire 42B of the second columnar wire 42 overlap. Furthermore, the first end columnar wire 43A and the second end columnar wire 43B of the third columnar wire 43 overlap.

[0102] <Effects of this embodiment> (1) According to the above embodiment, the distance between the first end pad 33B and the second end pad 33C of the third inductor wiring 33 in the direction along the second axis Y is different from the distance between the first end pad and the second end pad of the other inductor wirings 30 in the direction along the second axis Y. Due to the difference in pad position in this way, it is easy to design different wiring lengths for the wiring main body of each inductor wiring 30. Therefore, it is possible to obtain different inductance values for each inductor wiring 30.

[0103] (2) In the above embodiment, the inner diameter of the second inductor wiring 32 is different from the inner diameter of the first inductor wiring 31. According to this configuration, the inductance value of the first inductor wiring 31 is different from the inductance value of the second inductor wiring 32. In this way, each inductor wiring 30 can be designed to have a suitable inductance value.

[0104] (3) According to the above embodiment, the second end pad is located inside the spiral of each inductor wiring 30. The inside of the spiral allows more freedom in the position of the second end pad than the outside of the spiral. In other words, it is easy to design the second end pads of each inductor wiring 30 so that they are not arranged on the same straight line.

[0105] (4) In the above embodiment, the shortest distance SD1 between the first end electrode 61A and the second end electrode 61B of the first external electrode 61 is equal to the shortest distance SD2 between the first end electrode 62A and the second end electrode 62B of the second external electrode 62. Furthermore, the shortest distance SD3 between the first end electrode 63A and the second end electrode 63B of the third external electrode 63 is equal to the shortest distance SD1 between the first end electrode 61A and the second end electrode 61B of the first external electrode 61. In this way, because the distances between the first external electrodes 61, the distances between the second external electrodes 62, and the distances between the third external electrodes 63 are equal, it is easy to automatically apply solder by machine or the like when soldering the external electrodes 60 to a substrate.

[0106] (5) According to the above embodiment, when viewed in a direction perpendicular to the first main surface 20A, the first inductor wiring 31 reaches onto the second external electrode 62 connected to the second inductor wiring 32. Now, suppose that the element body 20 is viewed in a direction perpendicular to the first main surface 20A and the element body 20 is divided into three equal parts along the first axis X. In this case, the first inductor wiring 31 reaches mainly the central region where the second inductor wiring 32 is disposed. This allows the first inductor wiring 31 to be made longer. As a result, the difference in wiring length between the first inductor wiring 31 and the other inductor wirings 30 can be made larger. By creating differences in wiring length in this way, a desirable inductance value can be obtained for each inductor wiring 30.

[0107] (6) In the above embodiment, the size and shape of the second end pad 31C of the first inductor wiring 31 are different from the size and shape of the second end pad 32C of the second inductor wiring 32. In this way, by intentionally making the shapes different rather than standardizing the shapes of the pads of each inductor wiring 30, the degree of design freedom regarding the wiring length and shape of each inductor wiring 30 is improved. This makes it easier to increase the difference between the inductance value of the first inductor wiring 31 and the inductance value of the second inductor wiring 32.

[0108] (7) In the above embodiment, the geometric center OP of the first end columnar wiring 41A of the first inductor wiring 31 is offset from the geometric center OE of the first end electrode 61A. The geometric center OP of the second end columnar wiring 41B of the first inductor wiring 31 is offset from the geometric center OE of the second end electrode 61B. A first vector BC1 extending from the geometric center OP of the first end columnar wiring 41A toward the geometric center OE of the first end electrode 61A is different from a third vector BC3 extending from the geometric center OP of the second end columnar wiring 41B toward the geometric center OE of the second end electrode 61B. In other words, the position of the columnar wiring 40 relative to the external electrode 60 is not limited to a specific position. This improves the degree of freedom in designing the connection position between the columnar wiring 40 and the external electrode 60, etc. Accordingly, the degree of freedom in designing each inductor wiring 30 is also increased, making it easier to vary the inductance value of each inductor wiring 30.

[0109] (8) In the above embodiment, the geometric center OP of the first end columnar wiring 41A of the first inductor wiring 31 is offset from the geometric center OE of the first end electrode 61A. Furthermore, the geometric center OP of the first end columnar wiring 42A of the second inductor wiring 32 is offset from the geometric center OE of the first end electrode 62A. Furthermore, the first vector BC1 and the second vector BC2 are different. This configuration improves the degree of freedom in designing the connection position between the columnar wiring 40 and the external electrode 60, etc. Accordingly, the degree of freedom in designing each inductor wiring 30 also increases, making it easier to vary the inductance value of each inductor wiring 30.

[0110] (9) If a current is passed through the inductor component 10, magnetic flux flows in a direction perpendicular to the first main surface 20A. The generated magnetic flux then penetrates the external electrode 60. Thus, the more magnetic flux that penetrates the external electrode 60, the greater the eddy current loss in the inductor component 10. In other words, the Q value of the inductor component 10 decreases. In the above embodiment, the shortest distance in the third layer L3, i.e., the shortest distance from the external electrode 60 to each inductor wiring 30, is 0.04 mm or more. This dimensional relationship prevents the magnetic flux generated when a current is passed through each inductor wiring 30 from penetrating the external electrode 60. Therefore, this configuration prevents eddy current loss when a current is passed through each inductor wiring 30.

[0111] (10) In the above embodiment, the inductor wiring 30 includes a first inductor wiring 31, a second inductor wiring 32, and a third inductor wiring 33. That is, the inductor component 10 includes three inductor wirings 30. This configuration allows the mounting area on the substrate to be smaller than when each inductor wiring 30 is mounted on a separate element body 20.

[0112] (11) In the above embodiment, the geometric center CL1 of the second end pad 31C of the first inductor wiring 31 is not located on a line parallel to the first axis X that passes through the geometric center CL3 of the second end pad 33C of the third inductor wiring 33. On the other hand, the geometric center CL1 of the second end pad 31C of the first inductor wiring 31 and the geometric center CL2 of the second end pad 32C of the second inductor wiring 32 are located on the same line parallel to the first axis X. In this way, if at least one second end pad is not located on a line parallel to the first axis X that passes through the geometric centers of the other second end pads, the degree of freedom in designing the wiring length of the wiring body for each inductor wiring 30 is increased, and different inductance values can be obtained for each inductor wiring 30.

[0113] (12) In the above embodiment, each inductor wiring 30 extends in a spiral shape. Furthermore, each inductor wiring 30 extends in a spiral shape in the same direction. This configuration allows the direction of current to be the same in each inductor wiring 30, making it easy to adjust the coupling coefficient between each inductor wiring 30.

[0114] (13) In the above embodiment, the dimension of the inductor component 10 in the direction perpendicular to the first main surface 20A is 0.2 mm or less. When the dimension of the inductor component 10 in the direction along the third axis Z is small, the inductor component 10 can be mounted on the land side of a package substrate.

[0115] (14) In the above embodiment, the external electrode 60 has three electrode layers made of different materials. With this configuration, each layer can have a different function. (15) In the above embodiment, the third electrode layer 60C, which is located farthest from the first electrode layer 60A, contains gold. This is expected to provide an anti-corrosion effect to the second electrode layer 60B and the first electrode layer 60A of the external electrode 60. Furthermore, since the third electrode layer 60C contains gold, it is possible to ensure the wettability of the solder when mounting the inductor component 10 on a substrate.

[0116] (16) In the above embodiment, the dimension of the external electrode 60 in the direction perpendicular to the first main surface 20A is smaller than the dimension of the multiple inductor wirings 30 in the direction perpendicular to the first main surface 20A. In this way, when the dimension of the external electrode 60 in the direction along the third axis Z is small, the dimension of the inductor component 10 in the direction along the third axis Z can be reduced.

[0117] (17) In the above embodiment, the inductor component 10 includes an insulating layer 70. The insulating layer 70 covers the periphery of the plurality of external electrodes 60. This configuration can improve the insulation between the external electrodes 60.

[0118] <Examples of changes> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0119] In the above embodiment, one or more of the inductor wirings 30 selected from the plurality of inductor wirings 30 do not have to be spiral-shaped. That is, one or more of the inductor wirings 30 selected from the plurality of inductor wirings 30 may have one or less turns. For example, as shown in the example of FIG. 4, the third inductor wiring 33 may have a meandering shape. Furthermore, the inductor wiring 30 may have a straight shape extending parallel to the second axis Y, or may have a bow-like curved shape.

[0120] In the above embodiment, the maximum dimension in the direction perpendicular to the first main surface 20A including the element body 20 and the external electrodes 60 may be greater than 0.2 mm. In the above embodiment, the dimensions of the first layer L1, the second layer L2, and the third layer L3 of the element body 20 in the direction along the third axis Z are not limited to those in the above embodiment. Furthermore, the maximum dimension in the direction along the third axis Z including the first layer L1, the second layer L2, and the third layer L3 may be greater than 0.13 mm.

[0121] In the above embodiment, the shortest distance from the first main surface 20A to the inductor wiring 30 may be less than 0.04 mm. In the above embodiment, the maximum dimension of the third layer L3 in the direction along the third axis Z does not have to be twice or more the maximum dimension of the first layer L1 in the direction along the third axis Z.

[0122] In the above embodiment, one or more inductor wirings 30 selected from the plurality of inductor wirings 30 may have a spiral shape that is wound in a different direction from the other inductor wirings 30. For example, in the example shown in FIG. 5 , when the third inductor wiring 33 is seen through in a direction perpendicular to the first main surface 20A, the wiring body 33A of the third inductor wiring 33 has a spiral shape whose diameter decreases from the first end to the second end. In the example shown in FIG. 5 , the wiring body 33A of the third inductor wiring 33 extends in a spiral shape that is wound in a different direction from the wiring body 31A of the first inductor wiring 31. In this way, by employing inductor wirings 30 that are wound in different directions, it is possible to obtain a coupling coefficient between inductor wirings 30 that would be difficult to achieve with spiral shapes wound in the same direction.

[0123] In the above embodiment, the wiring width of one of the multiple inductor wirings 30 may be different from the wiring widths of the other inductor wirings 30. For example, as shown in the example in FIG. 6, the wiring width MW3 of the third inductor wiring 33 is larger than the wiring width MW1 of the first inductor wiring 31. As in the configuration of the example shown in FIG. 6, by adopting a preferred wiring width for the inductor wiring 30, a preferred inductance value can be obtained for each inductor wiring 30. Note that, without being limited to the example shown in FIG. 6, the wiring width MW1 of the wiring main body 31A of the first inductor wiring 31, the wiring width MW2 of the second inductor wiring 32, and the wiring width MW3 of the third inductor wiring 33 may be different from each other.

[0124] In the above embodiment, the size of the pads of the inductor wiring 30 can be changed as appropriate. In the above embodiment, the material of the element body 20 is not limited to the example of the above embodiment as long as it contains a magnetic material. For example, the material of the element body 20 may be made of a magnetic metal powder other than Fe. Examples of such a material include Ni, Cr, Cu, Al, and alloys thereof.

[0125] In the above embodiment, the inductor wiring 30 may be composed of only the first inductor wiring 31 and the second inductor wiring 32. Furthermore, the inductor component 10 may further include an inductor wiring.

[0126] In the above embodiment, the first inductor wiring 31 does not necessarily have to have a portion that overlaps with the second external electrode 62 when viewed in a direction perpendicular to the first main surface 20A. In the above embodiment, the second inductor wiring 32 does not necessarily have to have a portion overlapping with the third external electrode 63.

[0127] The inductor wiring 30 may be formed by a known method such as electrolytic plating, electroless plating, sputtering, etching, print sintering, etc. This also applies to the pillar wirings 40 and the vias 50.

[0128] In the above embodiment, all of the inductor wirings 30 may have the same inner diameter. In the above embodiment, the number of turns of all the inductor wirings 30 may be the same.

[0129] In the above embodiment, the wiring body 31A of the first inductor wiring 31 may have a spiral shape whose diameter increases from the first end to the second end of the wiring body 31A. This also applies to the second inductor wiring 32 and the third inductor wiring 33.

[0130] In the above embodiment, the shortest distance between the inductor wirings 30 may be greater than ⅓ of the minimum wiring width of the inductor wirings 30 . In the above embodiment, the number of turns of each inductor wiring 30 is not limited to the example in the above embodiment. For example, the number of turns of each inductor wiring 30 may be less than 1.5.

[0131] In the above embodiment, the shape of each pad when viewed in a direction perpendicular to the first main surface 20A is not limited to the example of the above embodiment. For example, each pad may be circular, square, or the like. Note that when a pad is circular or the like, the wiring width of the pad is the maximum dimension of the pad in a direction perpendicular to the extension direction of the wiring main body at the connection point between the pad and the wiring main body connected to the pad when viewed in a direction perpendicular to the third axis Z.

[0132] In the above embodiment, the arrangement of the external electrodes 60 is not limited to the example in the above embodiment. For example, the shortest distance SL1 between the first external electrode 61 and the short side of the first main surface 20A may be different from the shortest distance SL2 between the third external electrode 63 and the short side of the first main surface 20A. Furthermore, the shortest distance SD1 between the first end electrode 61A and the second end electrode 61B of the first external electrode 61 may be different from the shortest distance SD2 between the first end electrode 62A and the second end electrode 62B of the second external electrode 62. Furthermore, the shortest distance SD1 between the first end electrode 61A and the second end electrode 61B of the first external electrode 61 may be different from the shortest distance SD3 between the first end electrode 63A and the second end electrode 63B of the third external electrode 63.

[0133] In the above embodiment, when viewed in a direction perpendicular to the first main surface 20A, the shape of each external electrode 60 is not limited to a rectangular shape. For example, each external electrode 60 may be circular, polygonal, or the like. Furthermore, the shapes of each external electrode 60 may be different from each other.

[0134] In the above embodiment, when viewed in a direction perpendicular to the first main surface 20A, the areas of the external electrodes 60 may be different from one another. In the above embodiment, the dimension of each external electrode 60 in the direction along the third axis Z is not limited to the example in the above embodiment. The dimension of each external electrode 60 in the direction along the third axis Z may be larger than or the same as the dimension of each inductor wiring 30 in the direction along the third axis Z. Furthermore, the dimension of the first electrode layer 60A of each external electrode 60 in the direction along the third axis Z may be larger than the dimension of each inductor wiring 30 in the direction along the third axis Z. Furthermore, the maximum dimension of each external electrode 60 in the direction along the third axis Z may be larger than half the maximum dimension of the inductor wiring 30 in the direction along the third axis Z.

[0135] In the above embodiment, each external electrode 60 does not have to be configured by stacking multiple layers. For example, in the above embodiment, each external electrode 60 may be configured by a single layer of plating.

[0136] In the above embodiment, each external electrode 60 may further include layers made of different materials. When each external electrode 60 is made of multiple layers, any of the multiple layers may be made of the same material. Furthermore, each external electrode 60 may be made of two metal layers.

[0137] In the above embodiment, the materials of the first electrode layer 60A, the second electrode layer 60B, and the third electrode layer 60C are not limited to those in the above embodiment. For example, the material of the third electrode layer 60C may be Sn, Au, and an alloy containing Sn, etc.

[0138] In the above embodiment, each of the columnar wirings 40 does not have to extend parallel to the third axis Z. Each of the columnar wirings 40 may intersect with the first main surface 20A as long as it connects the inductor wiring 30 and the external electrode 60.

[0139] In the above embodiment, the maximum dimension of each columnar wiring 40 in the direction along the third axis Z may be smaller than the maximum dimension of each inductor wiring 30 in the direction along the third axis Z. In other words, the maximum dimension of each columnar wiring 40 in the direction along the third axis Z may be smaller than 1.5 times the maximum dimension of each inductor wiring 30 in the direction along the third axis Z.

[0140] If the dimension of each columnar wiring 40 along the third axis Z is larger than the maximum dimension of the columnar wiring 40 in the direction parallel to the first main surface 20A, the magnetic flux generated when a current flows through the inductor component 10 will have difficulty penetrating the external electrode 60. Therefore, it is preferable that the dimension of each columnar wiring 40 along the third axis Z be 1.5 times or more the maximum dimension of the columnar wiring 40 in the direction parallel to the first main surface 20A.

[0141] In the above embodiment, the first vector BC1 and the third vector BC3 may be the same. Alternatively, the magnitude of the first vector BC1 and the magnitude of the third vector BC3 may be equal, and the direction of the first vector BC1 and the direction of the third vector BC3 may be different. Alternatively, the magnitude of the first vector BC1 and the magnitude of the third vector BC3 may be different, and the direction of the first vector BC1 and the direction of the third vector BC3 may be equal. Furthermore, the geometric center OP of the first columnar wire 41 and the geometric center OE of the external electrode 60 connected to the first columnar wire 41 may coincide. The same applies to the second columnar wire 42 and the third columnar wire 43.

[0142] In the above embodiment, for the first columnar wiring 41, the first vector BC1 and the second vector BC2 may be the same. Alternatively, the magnitude of the first vector BC1 and the magnitude of the second vector BC2 may be equal, and the direction of the first vector BC1 and the direction of the second vector BC2 may be different. Alternatively, the magnitude of the first vector BC1 and the magnitude of the second vector BC2 may be different, and the direction of the first vector BC1 and the direction of the second vector BC2 may be equal. This also applies to the first vector BC1 and the fifth vector BC5. The same also applies to the third vector BC3, the fourth vector BC4, and the sixth vector BC6.

[0143] In the above embodiment, the first end columnar wire 41A and the second end columnar wire 42B do not have to overlap in the direction along the second axis Y. In the above embodiment, the imaginary line segment L connecting the geometric center OP of the first end columnar wire 41A and the geometric center OP of the second end columnar wire 41B may be parallel to the first axis X or the second axis Y.

[0144] In the above embodiment, the three first end electrodes 61A, 62A, 63A do not have to be aligned parallel to the first axis X. Furthermore, the three first end electrodes 61A, 62A, 63A do not have to be aligned at equal intervals.

[0145] In the above embodiment, when viewed in a direction perpendicular to the first main surface 20A, all of the columnar wirings 40 may have the same shape. Also, when viewed in a direction perpendicular to the first main surface 20A, all of the columnar wirings 40 may have the same size.

[0146] In the above embodiment, the insulating layer 70 of the inductor element 10 can be omitted. In the above embodiment, the vias 50 can be omitted from the inductor component 10. When the vias 50 are omitted, it is sufficient that the columnar wirings 40 and the inductor wirings 30 are directly connected to each other.

[0147] The technical concepts that can be derived from the above-described embodiments and modifications will be described below. [1] An inductor component comprising: an element body having a main surface; a plurality of inductor wirings extending within the element body parallel to the main surface; a plurality of pillar-shaped wirings connected to ends of the inductor wirings and extending in a direction intersecting the main surface; and a plurality of external electrodes connected to the pillar-shaped wirings and exposed from the main surface, wherein the main surface is rectangular when viewed from a direction perpendicular to the main surface; and when an axis parallel to an edge of the main surface is defined as a first axis, each of the inductor wirings has a wiring body, a first end pad connected to a first end of the wiring body and having a wiring width greater than that of the wiring body, and a second end pad connected to a second end of the wiring body and having a wiring width greater than that of the wiring body, wherein the geometric centers of the first end pads of each of the inductor wirings are located on the same straight line parallel to the first axis, and one or more of the geometric centers of the second end pads of each of the inductor wirings are not located on the same straight line parallel to the first axis.

[0148] [2] An inductor component according to [1], wherein two or more of the plurality of inductor wirings extend in a spiral shape when viewed in a direction perpendicular to the main surface, and the number of turns of one of the spirally extending inductor wirings is different from the number of turns of the other spirally extending inductor wirings.

[0149] [3] An inductor component according to [1] or [2], wherein two or more of the plurality of inductor wirings extend in a spiral shape when viewed in a direction perpendicular to the main surface, and the inner diameter of one of the spirally extending inductor wirings is different from the inner diameter of the other spirally extending inductor wirings.

[0150] [4] The inductor component according to any one of [1] to [3], wherein the wiring width of one of the plurality of inductor wirings is different from the wiring width of one or more selected from the other inductor wirings.

[0151] [5] An inductor component according to any one of [1] to [4], wherein one or more of the wiring bodies among the plurality of inductor wirings extend in a spiral shape with a diameter that decreases from a first end of the wiring body toward a second end of the wiring body when viewed in a direction perpendicular to the main surface.

[0152] [6] The plurality of inductor wirings include a first inductor wiring extending parallel to the main surface and a second inductor wiring extending on the same plane as the first inductor wiring, the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring and a plurality of second pillar-shaped wirings connected to ends of the second inductor wiring, the plurality of external electrodes include a plurality of first external electrodes connected to the plurality of first pillar-shaped wirings and a plurality of second external electrodes connected to the plurality of second pillar-shaped wirings, and the plurality of first external electrodes are connected to the first inductor wiring via the first pillar-shaped wiring. an inductor component according to any one of [1] to [5], comprising a first end electrode connected to a first end of the first inductor wiring via the second columnar wiring and a second end electrode connected to a second end of the first inductor wiring via the first columnar wiring, and the plurality of second external electrodes comprising a first end electrode connected to the first end of the second inductor wiring via the second columnar wiring and a second end electrode connected to the second end of the second inductor wiring via the second columnar wiring, wherein the shortest distance between the first end electrode and the second end electrode connected to the first inductor wiring is equal to the shortest distance between the first end electrode and the second end electrode connected to the second inductor wiring.

[0153] [7] The inductor component according to any one of [1] to [6], wherein the plurality of inductor wirings include a first inductor wiring extending parallel to the main surface and a second inductor wiring extending on the same plane as the first inductor wiring, the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring and a plurality of second pillar-shaped wirings connected to ends of the second inductor wiring, the plurality of external electrodes include a plurality of first external electrodes connected to the plurality of first pillar-shaped wirings and a plurality of second external electrodes connected to the plurality of second pillar-shaped wirings, and the first inductor wiring has a portion that overlaps with one or more selected from the plurality of second external electrodes when viewed in a direction perpendicular to the main surface.

[0154] [8] An inductor component according to any one of [1] to [7], wherein the plurality of inductor wirings include a first inductor wiring extending parallel to the main surface and a second inductor wiring extending on the same plane as the first inductor wiring, and when viewed in a direction perpendicular to the main surface, one or more selected from the size and shape of the second end pad of the first inductor wiring are different from one or more selected from the size and shape of the second end pad of the second inductor wiring.

[0155] [9] The plurality of inductor wirings include a first inductor wiring extending parallel to the main surface and a second inductor wiring extending on the same plane as the first inductor wiring, the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring and a plurality of second pillar-shaped wirings connected to ends of the second inductor wiring, and the plurality of external electrodes include a plurality of first external electrodes connected to the plurality of first pillar-shaped wirings and a plurality of second external electrodes connected to the plurality of second pillar-shaped wirings, and when viewed in a direction perpendicular to the main surface, the geometric center of a surface exposed from the main surface of one or more selected from the plurality of first pillar-shaped wirings is shifted from the geometric center of the first external electrode to which the first pillar-shaped wiring is connected. and the geometric center of a surface of one or more selected from the plurality of second columnar wirings that is exposed from the main surface is shifted with respect to the geometric center of the second external electrode to which the second columnar wiring is connected, and when a vector extending from the geometric center of the surface of one or more selected from the plurality of first columnar wirings that is exposed from the main surface to the geometric center of the first external electrode to which the first columnar wiring is connected is defined as a first vector, and a vector extending from the geometric center of the surface of one or more selected from the plurality of second columnar wirings that is exposed from the main surface to the geometric center of the second external electrode to which the second columnar wiring is connected is defined as a second vector, the first vector is different from the second vector.

[0156]

[10] When, among the plurality of first pillar-shaped wirings, the first pillar-shaped wiring connected to a first end of the first inductor wiring is defined as a first end pillar-shaped wiring, and the first pillar-shaped wiring connected to a second end of the first inductor wiring is defined as a second end pillar-shaped wiring, when viewed in a direction perpendicular to the main surface, the geometric center of a surface of the first end pillar-shaped wiring exposed from the main surface is shifted from the geometric center of the first external electrode to which the first end pillar-shaped wiring is connected, and the geometric center of a surface of the second end pillar-shaped wiring exposed from the main surface is shifted from the geometric center of the second end pillar-shaped wiring the inductor component according to any one of [1] to [9], wherein the first vector is a vector extending from the geometric center of the surface of the first end columnar wiring exposed from the main surface to the geometric center of the first external electrode to which the first end columnar wiring is connected, and the third vector is a vector extending from the geometric center of the surface of the second end columnar wiring exposed from the main surface to the geometric center of the first external electrode to which the second end columnar wiring is connected, and the first vector is different from the third vector.

[0157]

[11] The inductor component according to any one of [1] to

[10] , wherein the shortest distance from the main surface to the inductor wiring is 0.04 mm or more.

[12] The inductor component according to any one of [1] to

[11] , wherein the plurality of inductor wirings include a first inductor wiring extending parallel to the main surface, a second inductor wiring extending on the same plane as the first inductor wiring, and a third inductor wiring extending on the same plane as the first inductor wiring; the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring, a plurality of second pillar-shaped wirings connected to ends of the second inductor wiring, and a plurality of third pillar-shaped wirings connected to ends of the third inductor wiring; and the plurality of external electrodes include a plurality of first external electrodes connected to the plurality of first pillar-shaped wirings, a plurality of second external electrodes connected to the second pillar-shaped wirings, and a plurality of third external electrodes connected to the plurality of third pillar-shaped wirings.

[0158]

[13] An inductor component according to

[12] , wherein two selected from the geometric center of the second end pad of the first inductor wiring, the geometric center of the second end pad of the second inductor wiring, and the geometric center of the second end pad of the third inductor wiring are located on the same straight line parallel to the first axis.

[0159]

[14] An inductor component according to any one of [1] to

[13] , wherein two or more of the plurality of inductor wirings extend in a spiral shape when viewed in a direction perpendicular to the main surface, and two of the spirally extending inductor wirings extend in a spiral shape in the same direction.

[0160]

[15] An inductor component according to any one of [1] to

[13] , wherein two or more of the plurality of inductor wirings extend in a spiral shape when viewed in a direction perpendicular to the main surface, and one of the spirally extending inductor wirings extends in a spiral shape in a different direction from the other spirally extending inductor wirings.

[0161]

[16] The inductor component according to any one of [1] to

[15] , wherein one or more selected from the plurality of inductor wirings has one or less turns.

[17] The inductor component according to any one of [1] to

[16] , wherein the maximum dimension in a direction perpendicular to the main surface including the element body and the external electrodes is 0.2 mm or less. [Explanation of symbols]

[0162] X…1st axis 10...Inductor components 20...Base body 20A...First principal surface 30...Inductor wiring 31...First inductor wiring 31A...Wiring body 31B...First end pad 31C...Second end pad 32...Second inductor wiring 32A...Wiring body 32B...First end pad 32C...Second end pad 33...Third inductor wiring 33A...Wiring body 33B...First end pad 33C...Second end pad 40…Column wiring 60…External electrode

Claims

1. an element body having a main surface; a plurality of inductor wirings extending within the element body on the same plane parallel to the main surface; a plurality of pillar-shaped wirings connected to ends of the inductor wiring and extending in a direction intersecting the main surface; a plurality of external electrodes connected to the pillar-shaped wirings and exposed from the main surface; Equipped with When viewed from a direction perpendicular to the main surface, the main surface has a quadrangular shape, When an axis parallel to the edge of the main surface is defined as a first axis, each of the inductor wirings has a wiring body, a first end pad connected to a first end of the wiring body and having a wiring width larger than that of the wiring body, and a second end pad connected to a second end of the wiring body and having a wiring width larger than that of the wiring body; when viewed in a direction perpendicular to the main surface, the wiring body of each of the inductor wirings extends in a spiral shape such that a diameter thereof decreases from the first end toward the second end, the geometric centers of the first end pads of the inductor wirings are located on the same straight line parallel to the first axis, One or more geometric centers of the second end pads of the inductor wiring are not located on the same straight line parallel to the first axis. Inductor components.

2. The number of turns of one of the inductor wirings is different from the number of turns of the other inductor wirings. The inductor component according to claim 1 .

3. The inner diameter of one of the inductor wirings is different from the inner diameter of the other inductor wirings. The inductor component according to claim 1 .

4. The wiring width of one of the plurality of inductor wirings is different from the wiring width of one or more selected from the other inductor wirings. The inductor component according to claim 1 .

5. the plurality of inductor wirings include a first inductor wiring extending parallel to the main surface and a second inductor wiring extending on the same plane as the first inductor wiring; the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring and a plurality of second pillar-shaped wirings connected to ends of the second inductor wiring; the plurality of external electrodes include a plurality of first external electrodes connected to the plurality of first columnar wirings and a plurality of second external electrodes connected to the plurality of second columnar wirings; the plurality of first external electrodes include a first end electrode connected to a first end of the first inductor wiring via the first pillar-shaped wiring, and a second end electrode connected to a second end of the first inductor wiring via the first pillar-shaped wiring; the plurality of second external electrodes include a first end electrode connected to a first end of the second inductor wiring via the second pillar-shaped wiring, and a second end electrode connected to a second end of the second inductor wiring via the second pillar-shaped wiring; The shortest distance between the first end electrode and the second end electrode connected to the first inductor wiring is equal to the shortest distance between the first end electrode and the second end electrode connected to the second inductor wiring. The inductor component according to claim 1 .

6. the plurality of inductor wirings include a first inductor wiring extending parallel to the main surface and a second inductor wiring extending on the same plane as the first inductor wiring; the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring and a plurality of second pillar-shaped wirings connected to ends of the second inductor wiring; the plurality of external electrodes include a plurality of first external electrodes connected to the plurality of first columnar wirings and a plurality of second external electrodes connected to the plurality of second columnar wirings; The first inductor wiring has a portion that overlaps with one or more selected from the plurality of second external electrodes when seen through in a direction perpendicular to the main surface. The inductor component according to claim 1 .

7. The plurality of inductor wirings include a first inductor wiring that extends parallel to the main surface, and a second inductor wiring that extends on the same plane as the first inductor wiring. When viewed in a direction perpendicular to the main surface, one or more selected from the size and shape of the second end pad of the first inductor wiring are different from one or more selected from the size and shape of the second end pad of the second inductor wiring. The inductor component according to claim 1 .

8. the plurality of inductor wirings include a first inductor wiring extending parallel to the main surface and a second inductor wiring extending on the same plane as the first inductor wiring; the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring and a plurality of second pillar-shaped wirings connected to ends of the second inductor wiring; the plurality of external electrodes include a plurality of first external electrodes connected to the plurality of first columnar wirings and a plurality of second external electrodes connected to the plurality of second columnar wirings; when viewed in a direction perpendicular to the main surface, the geometric center of a surface of one or more selected from the plurality of first columnar wirings that is exposed from the main surface is deviated from the geometric center of the first external electrode to which the first columnar wiring is connected, and the geometric center of a surface of one or more selected from the plurality of second columnar wirings that is exposed from the main surface is deviated from the geometric center of the second external electrode to which the second columnar wiring is connected, When a vector extending from the geometric center of a surface of one or more selected from the plurality of first columnar wirings that is exposed from the main surface to the geometric center of the first external electrode to which the first columnar wiring is connected is defined as a first vector, and a vector extending from the geometric center of a surface of one or more selected from the plurality of second columnar wirings that is exposed from the main surface to the geometric center of the second external electrode to which the second columnar wiring is connected is defined as a second vector, The first vector is different from the second vector The inductor component according to claim 1 .

9. the plurality of inductor wirings include a first inductor wiring that extends parallel to the main surface, the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring; the plurality of external electrodes include a plurality of first external electrodes connected to a plurality of the first columnar wirings, Among the plurality of first pillar-shaped wirings, when the first pillar-shaped wiring connected to a first end of the first inductor wiring is defined as a first end pillar-shaped wiring and the first pillar-shaped wiring connected to a second end of the first inductor wiring is defined as a second end pillar-shaped wiring, When viewed in a direction perpendicular to the main surface, the geometric center of a surface of the first end columnar wire exposed from the main surface is shifted from the geometric center of the first external electrode to which the first end columnar wire is connected, and the geometric center of a surface of the second end columnar wire exposed from the main surface is shifted from the geometric center of the first external electrode to which the second end columnar wire is connected, When a vector extending from the geometric center of the surface of the first end columnar wire exposed from the main surface to the geometric center of the first external electrode to which the first end columnar wire is connected is defined as a first vector, and a vector extending from the geometric center of the surface of the second end columnar wire exposed from the main surface to the geometric center of the first external electrode to which the second end columnar wire is connected is defined as a third vector, The first vector is different from the third vector The inductor component according to claim 1 .

10. The shortest distance from the main surface to the inductor wiring is 0.04 mm or more. The inductor component according to claim 1 .

11. the plurality of inductor wirings include a first inductor wiring extending parallel to the main surface, a second inductor wiring extending on the same plane as the first inductor wiring, and a third inductor wiring extending on the same plane as the first inductor wiring; the plurality of pillar-shaped wirings include a plurality of first pillar-shaped wirings connected to ends of the first inductor wiring, a plurality of second pillar-shaped wirings connected to ends of the second inductor wiring, and a plurality of third pillar-shaped wirings connected to ends of the third inductor wiring; The plurality of external electrodes include a plurality of first external electrodes connected to a plurality of the first columnar wirings, a plurality of second external electrodes connected to a plurality of the second columnar wirings, and a plurality of third external electrodes connected to a plurality of the third columnar wirings. The inductor component according to claim 1 .

12. Two selected from the geometric center of the second end pad of the first inductor wiring, the geometric center of the second end pad of the second inductor wiring, and the geometric center of the second end pad of the third inductor wiring are located on the same straight line parallel to the first axis. The inductor component of claim 11 .

13. Two of the inductor wirings extend in a spiral shape in the same direction. The inductor component according to claim 1 .

14. One of the inductor wirings extends in a spiral shape in a direction different from that of the other inductor wirings. The inductor component according to claim 1 .

15. The maximum dimension of the element body and the external electrodes in a direction perpendicular to the main surface is 0.2 mm or less. The inductor component according to claim 1 .

Images