Multilayer Inductor Component

Abstract

To improve a Q value in a multilayer inductor component.SOLUTION: A multilayer inductor component 10 comprises an element assembly 11 and inductor wiring 12. In six outer surfaces of the element assembly 11, specific one surface is defined as a bottom face 11A and a surface in parallel with the bottom face 11A is defined as a top face 11B. The inductor wiring 12 includes a plurality of inductor conductors 30 extending in parallel with the bottom face 11A and a via conductor 40 extending along an orthogonal axis which is orthogonal to the bottom face 11A. An area of each inductor conductor 30 when viewed in a direction along the orthogonal axis is defined as a conductor area and a total number of the inductor conductors 30 is defined as N. A top face side conductor area which is a total of areas of the inductor conductors up to an N / 2-th inductor conductor 30 counted from the inductor conductor 30 closest to the top face 11B in the direction along the orthogonal axis is 1.1 times or more as large as a bottom face side conductor area which is a total of areas of the inductor conductors up to the N / 2-th inductor conductor 30 counted from the inductor conductor 30 closest to the bottom face 11A.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a stacked inductor component.

Background Art

[0002] The stacked inductor component of Patent Document 1 includes a rectangular parallelepiped body. Therefore, the body has six outer surfaces. One of the six outer surfaces of the body is the bottom surface facing the substrate when mounting the inductor component on the substrate or the like. And two of the remaining five outer surfaces are a first end face perpendicular to the bottom surface and a second end face parallel to the first end face. Further, the body includes a first electrode and a second electrode exposed to the outside of the body. The first electrode straddles from the first end face to the bottom surface. The second electrode straddles from the second end face to the bottom surface.

[0003] The above stacked inductor component has an inductor wiring extending inside the body. The inductor wiring extends in a spiral shape around an orthogonal axis perpendicular to the bottom surface. Specifically, the inductor wiring includes a plurality of inductor conductors and a plurality of via conductors. Each inductor conductor extends parallel to the bottom surface. Each inductor conductor is separated from each other in the direction along the orthogonal axis. Each via conductor connects the inductor conductors adjacent to each other in the direction along the orthogonal axis.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the multilayer inductor component described in Patent Document 1, parasitic capacitance occurs between the inductor wiring and each electrode, and between the inductor wiring and the electrode on the substrate. If an excessively large parasitic capacitance occurs, the Q value of the multilayer inductor component may deteriorate.

Means for Solving the Problems

[0006] In order to solve the above problems, the multilayer inductor component of the present invention includes a rectangular parallelepiped-shaped element having six outer surfaces, and an inductor wiring extending inside the element. The element has an electrode connected to the inductor wiring. Among the six outer surfaces of the element, when a specific one of the surfaces is taken as the bottom surface and the surface parallel to the bottom surface is taken as the top surface, the electrode is exposed to the outside of the element on the bottom surface, and the inductor wiring has a plurality of inductor conductors extending parallel to the bottom surface and via conductors extending along an orthogonal axis orthogonal to the bottom surface. Each of the inductor conductors is located apart from each other along the orthogonal axis, and the via conductors connect the adjacent inductor conductors to each other in the direction along the orthogonal axis. When viewed in the direction facing the direction along the orthogonal axis, the area of each inductor conductor is defined as the conductor area, and when the total number of the inductor conductors is N, in the direction along the orthogonal axis, the total conductor area of the inductor conductors up to the N / 2-th (where the decimal part is rounded down) counted from the inductor conductor closest to the top surface, which is the top surface side conductor area, is 1.1 times or more the bottom surface side conductor area, which is the total conductor area of the inductor conductors up to the N / 2-th (where the decimal part is rounded down) counted from the inductor conductor closest to the bottom surface.

[0007] According to the above configuration, on the side closer to the bottom surface, the conductor area of the inductor conductor facing the electrode can be reduced. Thereby, the parasitic capacitance generated between the electrode and the inductor conductor can be reduced. Therefore, the Q value in the multilayer inductor component can be improved.

Effects of the Invention

[0008] The Q value in the multilayer inductor component can be improved.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0010] Hereinafter, an embodiment of an inductor component will be described. Note that the drawings may show the components enlarged for easy understanding. The dimensional ratios of the components may be different from the actual ones or those in another drawing.

[0011] <Regarding the overall configuration of the stacked inductor component> As shown in FIG. 1, the stacked inductor component 10 includes a rectangular parallelepiped-shaped element body 11. As shown in FIG. 2, the stacked inductor component 10 has a structure in which a plurality of plate-like layers are stacked as a whole. Also, each layer is rectangular in plan view. And since the base body 11 is in the shape of a rectangular parallelepiped, it has six outer surfaces. As shown in FIG. 1, among these six outer surfaces, a specific one of the surfaces parallel to the main surface of each layer is defined as the bottom surface 11A. Note that the bottom surface 11A is the surface facing the substrate when the stacked inductor component 10 is mounted on the substrate. A surface parallel to the bottom surface 11A is defined as the top surface 11B. And a specific one of the surfaces perpendicular to the bottom surface 11A is defined as the first main surface 11C. Also, a surface parallel to the first main surface 11C is defined as the second main surface 11D. Further, a specific one of the surfaces perpendicular to both the bottom surface 11A and the first main surface 11C is defined as the first end surface 11E. Also, a surface parallel to the first end surface 11E is defined as the second end surface 11F.

[0012] In the following description, the axis along the direction in which a plurality of layers are stacked, that is, the axis perpendicular to the bottom surface 11A, is defined as the orthogonal axis. And the orthogonal axis will be described as the first axis X. Also, the axis perpendicular to the first end surface 11E is defined as the second axis Y. Further, the axis perpendicular to the first main surface 11C is defined as the third axis Z. And the direction in which the top surface 11B faces among the directions along the first axis X is defined as the first positive direction X1, and the direction opposite to the first positive direction X1 is defined as the first negative direction X2. Also, the direction in which the first end surface 11E faces among the directions along the second axis Y is defined as the second positive direction Y1, and the direction opposite to the second positive direction Y1 is defined as the second negative direction Y2. Further, the direction in which the first main surface 11C faces among the directions along the third axis Z is defined as the third positive direction Z1, and the direction opposite to the third positive direction Z1 is defined as the third negative direction Z2.

[0013] In the present embodiment, the long side of the bottom surface 11A is parallel to the second axis Y. The short side of the bottom surface 11A is parallel to the third axis Z. The length of the long side of the bottom surface 11A is 0.4 mm. The length of the short side of the bottom surface 11A is 0.2 mm. Thus, the stacked inductor component 10 has a size defined by so-called 0402.

[0014] As shown in FIG. 2, the stacked inductor component 10 includes an inductor wiring 12. The inductor wiring 12 extends inside the base body 11. The inductor wiring 12 has twelve inductor conductors 30 and eleven via conductors 40. Each inductor conductor 30 extends parallel to the bottom surface 11A. Each via conductor 40 extends along the first axis X. In FIG. 2, only one inductor conductor 30 is labeled with the reference numeral "30". Also, in FIG. 2, only one via conductor 40 is labeled with the reference numeral "40".

[0015] Further, the stacked inductor component 10 includes a first electrode 50 and a second electrode 60. The first electrode 50 is connected to the first end of the inductor wiring 12. The second electrode 60 is connected to the second end of the inductor wiring 12.

[0016] As shown in FIG. 2, the stacked inductor component 10 has first to twenty-third layers L1 to L23. The first to twenty-third layers L1 to L23 are arranged in this order in the first negative direction X2. The thicknesses of the first to twenty-third layers L1 to L23, that is, the dimensions in the direction along the first axis X, are all substantially the same.

[0017] The first layer L1 is composed of a first electrode portion 501, a second electrode portion 601, a first inductor conductor 301, and a first insulating portion 201. The first electrode portion 501 is made of a conductive material such as silver. The first electrode portion 501 extends parallel to the third axis Z along the edge on the second positive direction Y1 side in the first layer L1. The maximum dimension of the first electrode portion 501 in the direction along the third axis Z is smaller than the dimension of the first layer L1 in the direction along the third axis Z. The first electrode portion 501 is located at the center of the first layer L1 in the direction along the third axis Z.

[0018] The second electrode portion 601 is made of a conductive material such as silver. The second electrode portion 601 extends along the edge on the second negative direction Y2 side in the first layer L1 in parallel with the third axis Z. The maximum dimension of the second electrode portion 601 in the direction along the third axis Z is smaller than the dimension of the first layer L1 in the direction along the third axis Z. The second electrode portion 601 is located at the center of the first layer L1 in the direction along the third axis Z.

[0019] The first inductor conductor 301 is made of a conductive material such as silver. When viewing the first layer L1 facing the first negative direction X2, as a whole, the first inductor conductor 301 extends in a spiral shape around the geometric center of the first layer L1. The first end portion 301A of the first inductor conductor 301 is a portion that deviates from the circumferential path formed by the overlapping of the inductor conductors 30 in the first layer L1 to the twenty-third layer L23 when viewed facing the first negative direction X2. The first end portion 301A is connected to the end portion on the third negative direction Z2 side of the first electrode portion 501. Note that the first end portion 301A is the first end of the entire inductor wiring 12.

[0020] The second end portion 301B of the first inductor conductor 301 has a substantially circular shape. The second end portion 301B of the first inductor conductor 301 functions as a land for connecting to a via conductor 401 described later. When viewing the first layer L1 facing the first negative direction X2, the position of the second end portion 301B of the first inductor conductor 301 in the direction along the second axis Y is the substantially geometric center of the first layer L1. Also, the position of the second end portion 301B of the first inductor conductor 301 in the direction along the third axis Z is located on the third positive direction Z1 side with respect to the geometric center of the first layer L1.

[0021] And when viewing the first layer L1 facing the first negative direction X2, the first inductor conductor 301 extends clockwise from the first end portion 301A toward the second end portion 301B. Also, the number of turns of the first inductor conductor 301 is about 1.5 turns. Note that the number of turns is defined as follows.

[0022] The number of turns of each inductor conductor 30 is determined based on a virtual vector. The starting point of the virtual vector is arranged on a virtual center line that passes through the center of the wiring width of the inductor conductor 30 and extends in the extending direction of the inductor conductor 30. And when the virtual vector rotates 360 degrees when moving from the state where the starting point of the inductor conductor 30 is arranged at one end to the other end of the virtual center line when viewed from the normal direction, the number of turns is defined as 1.0 turn. Therefore, for example, when wound 180 degrees, the number of turns becomes 0.5 turn.

[0023] The wiring width of each inductor conductor 30 is constant except for the first end portion and the second end portion. The definition of the wiring width is as follows. That is, among the line segments that can be drawn from an arbitrary point on the edge of a certain inductor conductor 30 to the opposite edge, the shortest line segment is specified. The length of this specified line segment is the line width of the wiring at the above-mentioned arbitrary point. Also, the line width being constant includes manufacturing errors and the like. That is, the line width being constant means that the difference with respect to the average value of the line width of the wiring is 20% or less of the average value.

[0024] In the first layer L1, the portion excluding the first electrode portion 501, the second electrode portion 601, and the first inductor conductor 301 is the first insulating portion 201. The first insulating portion 201 is made of a non-magnetic insulator such as glass, resin, or alumina.

[0025] As shown in FIG. 2, the second layer L2 is laminated on the main surface facing the first negative direction X2 of the first layer L1. When viewing the second layer L2 facing the first negative direction X2, the second layer L2 has the same rectangular shape as the first layer L1. The second layer L2 is composed of a third electrode portion 502, a fourth electrode portion 602, a via conductor 401, and a second insulating portion 202.

[0026] The third electrode portion 502 is made of the same material as the first electrode portion 501. When viewing the second layer L2 facing the first negative direction X2, the third electrode portion 502 has the same dimensions as the first electrode portion 501 and is located at the same position as the first electrode portion 501. Therefore, the third electrode portion 502 is laminated on the surface of the first electrode portion 501 facing the first negative direction X2.

[0027] The fourth electrode portion 602 is made of the same material as the second electrode portion 601. When viewing the second layer L2 facing the first negative direction X2, the fourth electrode portion 602 has the same dimensions as the second electrode portion 601 and is located at the same position as the second electrode portion 601. Therefore, the fourth electrode portion 602 is laminated on the surface of the second electrode portion 601 facing the first negative direction X2.

[0028] The via conductor 401 is made of the same material as the first inductor conductor 301. The via conductor 401 is columnar and extends along the first axis X. The via conductor 401 is laminated on the surface of the second end portion 301B of the first inductor conductor 301 facing the first negative direction X2. Therefore, the via conductor 401 is electrically connected to the second end portion 301B of the first inductor conductor 301. And the via conductor 401 extends from the second end portion 301B of the first inductor conductor 301 in the first negative direction X2.

[0029] In the second layer L2, the portion excluding the third electrode portion 502, the fourth electrode portion 602, and the via conductor 401 is the second insulating portion 202. The second insulating portion 202 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0030] The third layer L3 is laminated on the main surface of the second layer L2 facing the first negative direction X2. When viewing the third layer L3 facing the first negative direction X2, the third layer L3 has the same rectangular shape as the first layer L1. The third layer L3 is composed of a fifth electrode portion 503, a sixth electrode portion 603, a second inductor conductor 302, and a third insulating portion 203.

[0031] The fifth electrode portion 503 is made of the same material as the first electrode portion 501. When viewing the third layer L3 facing the first negative direction X2, the fifth electrode portion 503 has the same dimensions as the third electrode portion 502 and is located at the same position as the third electrode portion 502. Therefore, the fifth electrode portion 503 is laminated on the surface of the third electrode portion 502 facing the first negative direction X2.

[0032] The sixth electrode portion 603 is made of the same material as the second electrode portion 601. When viewing the third layer L3 facing the first negative direction X2, the sixth electrode portion 603 has the same dimensions as the fourth electrode portion 602 and is located at the same position as the fourth electrode portion 602. Therefore, the sixth electrode portion 603 is laminated on the surface of the fourth electrode portion 602 facing the first negative direction X2.

[0033] The second inductor conductor 302 is made of the same material as the first inductor conductor 301. When viewing the third layer L3 facing the first negative direction X2, as a whole, the second inductor conductor 302 extends in a spiral shape around the geometric center of the third layer L3. The first end portion 302A of the second inductor conductor 302 is substantially circular. The first end portion 302A of the second inductor conductor 302 is located on the surface of the via conductor 401 facing the first negative direction X2. Therefore, the first end portion 302A of the second inductor conductor 302 is connected to the via conductor 401.

[0034] The second end portion 302B of the second inductor conductor 302 is substantially circular in shape. The position of the second end portion 302B in the direction along the second axis Y is on the second negative direction Y2 side with respect to the geometric center of the third layer L3. The position of the second end portion 302B of the second inductor conductor 302 in the direction along the third axis Z is on the third positive direction Z1 side with respect to the geometric center of the third layer L3. When viewing the third layer L3 facing the first negative direction X2, the second inductor conductor 302 extends clockwise from the first end portion 302A toward the second end portion 302B. Also, the number of turns of the second inductor conductor 302 is about 1.75 turns. Here, the wiring length of the first inductor conductor 301 including the second end portion 301B except for the first end portion 301A is taken as 1 unit. At this time, the wiring length of the second inductor conductor 302 is about 1.04 units. Also, the wiring width of the second inductor conductor 302 is the same as the wiring width of the first inductor conductor 301.

[0035] In the third layer L3, the portion excluding the fifth electrode portion 503, the sixth electrode portion 603, and the second inductor conductor 302 is the third insulating portion 203. The third insulating portion 203 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0036] The fourth layer L4 is laminated on the main surface of the third layer L3 facing the first negative direction X2. When viewing the fourth layer L4 facing the first negative direction X2, the fourth layer L4 has the same rectangular shape as the first layer L1. The fourth layer L4 is composed of a seventh electrode portion 504, an eighth electrode portion 604, a via conductor 402, and a fourth insulating portion 204.

[0037] The seventh electrode portion 504 is made of the same material as the first electrode portion 501. When viewing the fourth layer L4 facing the first negative direction X2, the seventh electrode portion 504 has the same dimensions as the fifth electrode portion 503 and is located at the same position as the fifth electrode portion 503. Therefore, the seventh electrode portion 504 is laminated on the surface of the fifth electrode portion 503 facing the first negative direction X2.

[0038] The eighth electrode portion 604 is made of the same material as the second electrode portion 601. When viewing the fourth layer L4 facing the first negative direction X2, the eighth electrode portion 604 has the same dimensions as the sixth electrode portion 603 and is located at the same position as the sixth electrode portion 603. Therefore, the eighth electrode portion 604 is laminated on the surface of the sixth electrode portion 603 facing the first negative direction X2.

[0039] The via conductor 402 is made of the same material as the first inductor conductor 301. The via conductor 402 is columnar and extends along the first axis X. The via conductor 402 is laminated on the surface of the second end portion 302B of the second inductor conductor 302 facing the first negative direction X2. Therefore, the via conductor 402 is electrically connected to the second end portion 302B of the second inductor conductor 302. And the via conductor 402 extends from the second end portion 302B of the second inductor conductor 302 in the first negative direction X2.

[0040] In the fourth layer L4, the portion excluding the seventh electrode portion 504, the eighth electrode portion 604, and the via conductor 402 is the fourth insulating portion 204. The fourth insulating portion 204 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0041] The fifth layer L5 is laminated on the main surface of the fourth layer L4 facing the first negative direction X2. When viewing the fifth layer L5 facing the first negative direction X2, the fifth layer L5 has the same rectangular shape as the first layer L1. The fifth layer L5 is composed of a ninth electrode portion 505, a tenth electrode portion 605, a third inductor conductor 303, and a fifth insulating portion 205.

[0042] The ninth electrode portion 505 is made of the same material as the first electrode portion 501. When viewing the fifth layer L5 facing the first negative direction X2, the ninth electrode portion 505 has the same dimensions as the seventh electrode portion 504 and is located at the same position as the seventh electrode portion 504. Therefore, the ninth electrode portion 505 is laminated on the surface of the seventh electrode portion 504 facing the first negative direction X2.

[0043] The 10th electrode portion 605 is made of the same material as the 2nd electrode portion 601. When viewing the 5th layer L5 facing the first negative direction X2, the 10th electrode portion 605 has the same dimensions as the 8th electrode portion 604 and is located at the same position as the 8th electrode portion 604. Therefore, the 10th electrode portion 605 is laminated on the surface of the 8th electrode portion 604 facing the first negative direction X2.

[0044] The 3rd inductor conductor 303 is made of the same material as the 1st inductor conductor 301. When viewing the 5th layer L5 facing the first negative direction X2, as a whole, the 3rd inductor conductor 303 extends in a spiral shape around the approximate geometric center of the 5th layer L5. The first end portion 303A of the 3rd inductor conductor 303 is substantially circular. The first end portion 303A of the 3rd inductor conductor 303 is located on the surface of the via conductor 402 facing the first negative direction X2. Therefore, the first end portion 303A of the 3rd inductor conductor 303 is connected to the via conductor 402.

[0045] The second end portion 303B of the 3rd inductor conductor 303 is substantially circular. The position of the second end portion 303B along the second axis Y is the approximate geometric center of the 5th layer L5. The position of the second end portion 303B of the 3rd inductor conductor 303 along the third axis Z is on the third negative direction Z2 side with respect to the geometric center of the 5th layer L5. When viewing the 5th layer L5 facing the first negative direction X2, the 3rd inductor conductor 303 extends clockwise from the first end portion 303A to the second end portion 303B. Also, the number of turns of the 3rd inductor conductor 303 is about 1.5 turns. The wiring length of the 3rd inductor conductor 303 is about 1 unit. The wiring width of the 3rd inductor conductor 303 is the same as the wiring width of the 1st inductor conductor 301.

[0046] In the 5th layer L5, the portion excluding the 9th electrode portion 505, the 10th electrode portion 605, and the 3rd inductor conductor 303 is the 5th insulating portion 205. The 5th insulating portion 205 is made of a non-magnetic insulator of the same material as the 1st insulating portion 201.

[0047] The sixth layer L6 is laminated on the main surface of the fifth layer L5 facing the first negative direction X2. When viewing the sixth layer L6 facing the first negative direction X2, the sixth layer L6 has the same rectangular shape as the first layer L1. The sixth layer L6 is composed of an eleventh electrode portion 506, a twelfth electrode portion 606, a via conductor 403, and a sixth insulating portion 206.

[0048] The eleventh electrode portion 506 is made of the same material as the first electrode portion 501. When viewing the sixth layer L6 facing the first negative direction X2, the eleventh electrode portion 506 has the same dimensions as the ninth electrode portion 505 and is located at the same position as the ninth electrode portion 505. Therefore, the eleventh electrode portion 506 is laminated on the surface of the ninth electrode portion 505 facing the first negative direction X2.

[0049] The twelfth electrode portion 606 is made of the same material as the second electrode portion 601. When viewing the sixth layer L6 facing the first negative direction X2, the twelfth electrode portion 606 has the same dimensions as the tenth electrode portion 605 and is located at the same position as the tenth electrode portion 605. Therefore, the twelfth electrode portion 606 is laminated on the surface of the tenth electrode portion 605 facing the first negative direction X2.

[0050] The via conductor 403 is made of the same material as the first inductor conductor 301. The via conductor 403 is columnar and extends along the first axis X. The via conductor 403 is laminated on the surface of the second end portion 303B of the third inductor conductor 303 facing the first negative direction X2. Therefore, the via conductor 403 is electrically connected to the second end portion 303B of the third inductor conductor 303. And the via conductor 403 extends in the first negative direction X2 from the second end portion 303B of the third inductor conductor 303.

[0051] In the sixth layer L6, the portion excluding the eleventh electrode portion 506, the twelfth electrode portion 606, and the via conductor 403 is the sixth insulating portion 206. The sixth insulating portion 206 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0052] The seventh layer L7 is laminated on the main surface of the sixth layer L6 facing the first negative direction X2. When viewing the seventh layer L7 facing the first negative direction X2, the seventh layer L7 has the same rectangular shape as the first layer L1. The seventh layer L7 is composed of a thirteenth electrode portion 507, a fourteenth electrode portion 607, a fourth inductor conductor 304, and a seventh insulating portion 207.

[0053] The thirteenth electrode portion 507 is made of the same material as the first electrode portion 501. When viewing the seventh layer L7 facing the first negative direction X2, the thirteenth electrode portion 507 has the same dimensions as the eleventh electrode portion 506 and is located at the same position as the eleventh electrode portion 506. Therefore, the thirteenth electrode portion 507 is laminated on the surface of the eleventh electrode portion 506 facing the first negative direction X2.

[0054] The fourteenth electrode portion 607 is made of the same material as the second electrode portion 601. When viewing the seventh layer L7 facing the first negative direction X2, the fourteenth electrode portion 607 has the same dimensions as the twelfth electrode portion 606 and is located at the same position as the twelfth electrode portion 606. Therefore, the fourteenth electrode portion 607 is laminated on the surface of the twelfth electrode portion 606 facing the first negative direction X2.

[0055] The fourth inductor conductor 304 is made of the same material as the first inductor conductor 301. When viewing the seventh layer L7 facing the first negative direction X2, as a whole, the fourth inductor conductor 304 extends in a spiral shape around the approximate geometric center of the seventh layer L7. The first end portion 304A of the fourth inductor conductor 304 is substantially circular. The first end portion 304A of the fourth inductor conductor 304 is located on the surface of the via conductor 403 facing the first negative direction X2. Therefore, the first end portion 304A of the fourth inductor conductor 304 is connected to the via conductor 403.

[0056] The second end portion 304B of the fourth inductor conductor 304 is substantially circular. The position of the second end portion 304B of the fourth inductor conductor 304 in the direction along the second axis Y is on the positive second direction Y1 side with respect to the geometric center of the seventh layer L7. The position of the second end portion 304B of the fourth inductor conductor 304 in the direction along the third axis Z is on the negative third direction Z2 side with respect to the geometric center of the seventh layer L7. And when viewing the seventh layer L7 facing the first negative direction X2, the fourth inductor conductor 304 extends clockwise from the first end portion 304A toward the second end portion 304B. Also, the number of turns of the fourth inductor conductor 304 is approximately 1.75 turns. The wiring length of the fourth inductor wiring is approximately 1.04 units. The wiring width of the fourth inductor conductor 304 is the same as the wiring width of the first inductor conductor 301.

[0057] In the seventh layer L7, the portion excluding the thirteenth electrode portion 507, the fourteenth electrode portion 607, and the fourth inductor conductor 304 is the seventh insulating portion 207. The seventh insulating portion 207 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0058] The eighth layer L8 is laminated on the main surface of the seventh layer L7 facing the first negative direction X2. When viewing the eighth layer L8 facing the first negative direction X2, the eighth layer L8 has the same rectangular shape as the first layer L1. The eighth layer L8 is composed of a fifteenth electrode portion 508, a sixteenth electrode portion 608, a via conductor 404, and an eighth insulating portion 208.

[0059] The fifteenth electrode portion 508 is made of the same material as the first electrode portion 501. When viewing the eighth layer L8 facing the first negative direction X2, the fifteenth electrode portion 508 has the same dimensions as the thirteenth electrode portion 507 and is located at the same position as the thirteenth electrode portion 507. Therefore, the fifteenth electrode portion 508 is laminated on the surface of the thirteenth electrode portion 507 facing the first negative direction X2.

[0060] The 16th electrode portion 608 is made of the same material as the 2nd electrode portion 601. When viewing the 8th layer L8 facing the 1st negative direction X2, the 16th electrode portion 608 has the same dimensions as the 14th electrode portion 607 and is located at the same position as the 14th electrode portion 607. Therefore, the 16th electrode portion 608 is laminated on the surface of the 14th electrode portion 607 facing the 1st negative direction X2.

[0061] The via conductor 404 is made of the same material as the 1st inductor conductor 301. The via conductor 404 is columnar and extends along the 1st axis X. The via conductor 404 is laminated on the surface of the 2nd end portion 304B of the 4th inductor conductor 304 facing the 1st negative direction X2. Therefore, the via conductor 404 is electrically connected to the 2nd end portion 304B of the 4th inductor conductor 304. And the via conductor 404 extends from the 2nd end portion 304B of the 4th inductor conductor 304 in the 1st negative direction X2.

[0062] In the 8th layer L8, the portion excluding the 15th electrode portion 508, the 16th electrode portion 608, and the via conductor 404 is the 8th insulating portion 208. The 8th insulating portion 208 is made of a non-magnetic insulator of the same material as the 1st insulating portion 201.

[0063] The 9th layer L9 is laminated on the main surface of the 8th layer L8 facing the 1st negative direction X2. When viewing the 9th layer L9 facing the 1st negative direction X2, the 9th layer L9 has the same rectangular shape as the 1st layer L1. The 9th layer L9 is composed of the 17th electrode portion 509, the 18th electrode portion 609, the 5th inductor conductor 305, and the 9th insulating portion 209.

[0064] The 17th electrode portion 509 is made of the same material as the 1st electrode portion 501. When viewing the 9th layer L9 facing the 1st negative direction X2, the 17th electrode portion 509 has the same dimensions as the 15th electrode portion 508 and is located at the same position as the 15th electrode portion 508. Therefore, the 17th electrode portion 509 is laminated on the surface of the 15th electrode portion 508 facing the 1st negative direction X2.

[0065] The 18th electrode portion 609 is made of the same material as the 2nd electrode portion 601. When viewing the 9th layer L9 facing the first negative direction X2, the 18th electrode portion 609 has the same dimensions as the 16th electrode portion 608 and is located at the same position as the 16th electrode portion 608. Therefore, the 18th electrode portion 609 is laminated on the surface of the 16th electrode portion 608 facing the first negative direction X2.

[0066] The 5th inductor conductor 305 is made of the same material as the 1st inductor conductor 301. When viewing the 9th layer L9 facing the first negative direction X2, as a whole, the 5th inductor conductor 305 extends in a spiral shape around the approximate geometric center of the 9th layer L9. The first end portion 305A of the 5th inductor conductor 305 is substantially circular. The first end portion 305A of the 5th inductor conductor 305 is located on the surface of the via conductor 404 facing the first negative direction X2. Therefore, the first end portion 305A of the 5th inductor conductor 305 is connected to the via conductor 404.

[0067] The second end portion 305B of the 5th inductor conductor 305 is substantially circular. When viewing the 9th layer L9 facing the first negative direction X2, the second end portion 305B of the 5th inductor conductor 305 is located at the same position as the second end portion 301B of the 1st inductor conductor 301. And when viewing the 9th layer L9 facing the first negative direction X2, the 5th inductor conductor 305 extends clockwise from the first end portion 305A to the second end portion 305B. Also, the number of turns of the 5th inductor conductor 305 is about 1.5 turns. The wiring length of the 5th inductor conductor 305 is about 1 unit. The wiring width of the 5th inductor conductor 305 is the same as the wiring width of the 1st inductor conductor 301.

[0068] In the 9th layer L9, the portion excluding the 17th electrode portion 509, the 18th electrode portion 609, and the 5th inductor conductor 305 is the 9th insulating portion 209. The 9th insulating portion 209 is made of an insulator of the same material as the 1st insulating portion 201.

[0069] The tenth layer L10 is laminated on the main surface of the ninth layer L9 facing the first negative direction X2. When viewing the tenth layer L10 facing the first negative direction X2, the tenth layer L10 has the same rectangular shape as the first layer L1. The tenth layer L10 is composed of a nineteenth electrode portion 510, a twentieth electrode portion 610, a via conductor 405, and a tenth insulating portion 210.

[0070] The nineteenth electrode portion 510 is made of the same material as the first electrode portion 501. When viewing the tenth layer L10 facing the first negative direction X2, the nineteenth electrode portion 510 has the same dimensions as the seventeenth electrode portion 509 and is located at the same position as the seventeenth electrode portion 509. Therefore, the nineteenth electrode portion 510 is laminated on the surface of the seventeenth electrode portion 509 facing the first negative direction X2.

[0071] The twentieth electrode portion 610 is made of the same material as the second electrode portion 601. When viewing the tenth layer L10 facing the first negative direction X2, the twentieth electrode portion 610 has the same dimensions as the eighteenth electrode portion 609 and is located at the same position as the eighteenth electrode portion 609. Therefore, the twentieth electrode portion 610 is laminated on the surface of the eighteenth electrode portion 609 facing the first negative direction X2.

[0072] The via conductor 405 is made of the same material as the first inductor conductor 301. The via conductor 405 is columnar and extends along the first axis X. The via conductor 405 is laminated on the surface of the second end portion 305B of the fifth inductor conductor 305 facing the first negative direction X2. Therefore, the via conductor 405 is electrically connected to the second end portion 305B of the fifth inductor conductor 305. And the via conductor 405 extends in the first negative direction X2 from the second end portion 305B of the fifth inductor conductor 305.

[0073] In the tenth layer L10, the portion excluding the nineteenth electrode portion 510, the twentieth electrode portion 610, and the via conductor 405 is the tenth insulating portion 210. The tenth insulating portion 210 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0074] The 11th layer L11 is laminated on the main surface of the 10th layer L10 facing the first negative direction X2. When viewing the 11th layer L11 facing the first negative direction X2, the 11th layer L11 has the same rectangular shape as the first layer L1. The 11th layer L11 is composed of a 21st electrode portion 511, a 22nd electrode portion 611, a 6th inductor conductor 306, and an 11th insulating portion 211.

[0075] The 21st electrode portion 511 is made of the same material as the first electrode portion 501. When viewing the 11th layer L11 facing the first negative direction X2, the 21st electrode portion 511 has the same dimensions as the 19th electrode portion 510 and is located at the same position as the 19th electrode portion 510. Therefore, the 21st electrode portion 511 is laminated on the surface of the 19th electrode portion 510 facing the first negative direction X2.

[0076] The 22nd electrode portion 611 is made of the same material as the second electrode portion 601. When viewing the 11th layer L11 facing the first negative direction X2, the 22nd electrode portion 611 has the same dimensions as the 20th electrode portion 610 and is located at the same position as the 20th electrode portion 610. Therefore, the 22nd electrode portion 611 is laminated on the surface of the 20th electrode portion 610 facing the first negative direction X2.

[0077] The 6th inductor conductor 306 is made of the same material as the first inductor conductor 301. When viewing the 11th layer L11 facing the first negative direction X2, as a whole, the 6th inductor conductor 306 extends in a spiral shape around generally the geometric center of the 11th layer L11. The first end portion 306A of the 6th inductor conductor 306 is substantially circular. The first end portion 306A of the 6th inductor conductor 306 is located on the surface of the via conductor 405 facing the first negative direction X2. Therefore, the first end portion 306A of the 6th inductor conductor 306 is connected to the via conductor 405.

[0078] The second end portion 306B of the sixth inductor conductor 306 is substantially circular in shape. The position of the second end portion 306B in the direction along the second axis Y is on the second negative direction Y2 side with respect to the geometric center of the eleventh layer L11. Also, the position of the second end portion 306B in the direction along the third axis Z is on the third negative direction Z2 side with respect to the geometric center of the eleventh layer L11. And when viewing the eleventh layer L11 facing the first negative direction X2, the sixth inductor conductor 306 extends clockwise from the first end portion 306A toward the second end portion 306B. Also, the number of turns of the sixth inductor conductor 306 is about 1.5 turns. The wiring length of the sixth inductor conductor 306 is about 1 unit. The wiring width of the sixth inductor conductor 306 is the same as the wiring width of the first inductor conductor 301.

[0079] In the eleventh layer L11, the portion excluding the twenty - first electrode portion 511, the twenty - second electrode portion 611, and the sixth inductor conductor 306 is the eleventh insulating portion 211. The eleventh insulating portion 211 is made of an insulator of the same material as the first insulating portion 201.

[0080] The twelfth layer L12 is laminated on the main surface of the eleventh layer L11 facing the first negative direction X2. When viewing the twelfth layer L12 facing the first negative direction X2, the twelfth layer L12 has the same rectangular shape as the first layer L1. The twelfth layer L12 is composed of a twenty - third electrode portion 512, a twenty - fourth electrode portion 612, a via conductor 406, and a twelfth insulating portion 212.

[0081] The twenty - third electrode portion 512 is made of the same material as the first electrode portion 501. When viewing the twelfth layer L12 facing the first negative direction X2, the twenty - third electrode portion 512 has the same dimensions as the twenty - first electrode portion 511 and is located at the same position as the twenty - first electrode portion 511. Therefore, the twenty - third electrode portion 512 is laminated on the surface of the twenty - first electrode portion 511 facing the first negative direction X2.

[0082] The 24th electrode portion 612 is made of the same material as the 2nd electrode portion 601. When viewing the 12th layer L12 facing the first negative direction X2, the 24th electrode portion 612 has the same dimensions as the 22nd electrode portion 611 and is located at the same position as the 22nd electrode portion 611. Therefore, the 24th electrode portion 612 is laminated on the surface of the 22nd electrode portion 611 facing the first negative direction X2.

[0083] The via conductor 406 is made of the same material as the first inductor conductor 301. The via conductor 406 is columnar and extends along the first axis X. The via conductor 406 is laminated on the surface of the second end portion 306B of the sixth inductor conductor 306 facing the first negative direction X2. Therefore, the via conductor 406 is electrically connected to the second end portion 306B of the sixth inductor conductor 306. And the via conductor 406 extends from the second end portion 306B of the sixth inductor conductor 306 in the first negative direction X2.

[0084] In the 12th layer L12, the portion excluding the 23rd electrode portion 512, the 24th electrode portion 612, and the via conductor 406 is the 12th insulating portion 212. The 12th insulating portion 212 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0085] The 13th layer L13 is laminated on the main surface of the 12th layer L12 facing the first negative direction X2. When viewing the 13th layer L13 facing the first negative direction X2, the 13th layer L13 has the same rectangular shape as the first layer L1. The 13th layer L13 is composed of a 25th electrode portion 513, a 26th electrode portion 613, a seventh inductor conductor 307, and a 13th insulating portion 213.

[0086] The 25th electrode portion 513 is made of the same material as the first electrode portion 501. When viewing the 13th layer L13 facing the first negative direction X2, the 25th electrode portion 513 has the same dimensions as the 23rd electrode portion 512 and is located at the same position as the 23rd electrode portion 512. Therefore, the 25th electrode portion 513 is laminated on the surface of the 23rd electrode portion 512 facing the first negative direction X2.

[0087] The 26th electrode portion 613 is made of the same material as the 2nd electrode portion 601. When viewing the 13th layer L13 facing the first negative direction X2, the 26th electrode portion 613 has the same dimensions as the 24th electrode portion 612 and is located at the same position as the 24th electrode portion 612. Therefore, the 26th electrode portion 613 is laminated on the surface of the 24th electrode portion 612 facing the first negative direction X2.

[0088] The 7th inductor conductor 307 is made of the same material as the 1st inductor conductor 301. When viewing the 13th layer L13 facing the first negative direction X2, as a whole, the 7th inductor conductor 307 extends in a spiral shape around the approximate geometric center of the 13th layer L13. The first end portion 307A of the 7th inductor conductor 307 has a substantially circular shape. The first end portion 307A of the 7th inductor conductor 307 is located on the surface of the via conductor 406 facing the first negative direction X2. Therefore, the first end portion 307A of the 7th inductor conductor 307 is connected to the via conductor 406.

[0089] The second end portion 307B of the 7th inductor conductor 307 has a substantially circular shape. When viewing the 13th layer L13 facing the first negative direction X2, the second end portion 307B is located at the same position as the second end portion 304B of the 4th inductor conductor 304. And when viewing the 13th layer L13 facing the first negative direction X2, the 7th inductor conductor 307 extends clockwise from the first end portion 307A to the second end portion 307B. Also, the number of turns of the 7th inductor conductor 307 is about 0.5 turns. The wiring length of the 7th inductor conductor 307 is about 0.52 units. The wiring width of the 7th inductor conductor 307 is the same as the wiring width of the 1st inductor conductor 301.

[0090] In the 13th layer L13, the portion excluding the 25th electrode portion 513, the 26th electrode portion 613, and the 7th inductor conductor 307 is the 13th insulating portion 213. The 13th insulating portion 213 is made of a non-magnetic insulator of the same material as the 1st insulating portion 201.

[0091] The 14th layer L14 is laminated on the main surface of the 13th layer L13 facing the first negative direction X2. When viewing the 14th layer L14 facing the first negative direction X2, the 14th layer L14 has the same rectangular shape as the first layer L1. The 14th layer L14 is composed of a 27th electrode portion 514, a 28th electrode portion 614, a via conductor 407, and a 14th insulating portion 214.

[0092] The 27th electrode portion 514 is made of the same material as the first electrode portion 501. When viewing the 14th layer L14 facing the first negative direction X2, the 27th electrode portion 514 has the same dimensions as the 25th electrode portion 513 and is located at the same position as the 25th electrode portion 513. Therefore, the 27th electrode portion 514 is laminated on the surface of the 25th electrode portion 513 facing the first negative direction X2.

[0093] The 28th electrode portion 614 is made of the same material as the second electrode portion 601. When viewing the 14th layer L14 facing the first negative direction X2, the 28th electrode portion 614 has the same dimensions as the 26th electrode portion 613 and is located at the same position as the 26th electrode portion 613. Therefore, the 28th electrode portion 614 is laminated on the surface of the 26th electrode portion 613 facing the first negative direction X2.

[0094] The via conductor 407 is made of the same material as the first inductor conductor 301. The via conductor 407 is columnar and extends along the first axis X. The via conductor 407 is laminated on the surface of the second end portion 307B of the seventh inductor conductor 307 facing the first negative direction X2. Therefore, the via conductor 407 is electrically connected to the second end portion 307B of the seventh inductor conductor 307. And the via conductor 407 extends from the second end portion 307B of the seventh inductor conductor 307 in the first negative direction X2.

[0095] In the 14th layer L14, the portion excluding the 27th electrode portion 514, the 28th electrode portion 614, and the via conductor 407 is the 14th insulating portion 214. The 14th insulating portion 214 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0096] The 15th layer L15 is laminated on the main surface of the 14th layer L14 facing the first negative direction X2. When the 15th layer L15 is viewed facing the first negative direction X2, the 15th layer L15 has the same rectangular shape as the 1st layer L1. The 15th layer L15 is composed of a 29th electrode portion 515, a 30th electrode portion 615, an 8th inductor conductor 308, and a 15th insulating portion 215.

[0097] The 29th electrode portion 515 is made of the same material as the 1st electrode portion 501. When the 15th layer L15 is viewed facing the first negative direction X2, the 29th electrode portion 515 has the same dimensions as the 27th electrode portion 514 and is located at the same position as the 27th electrode portion 514. Therefore, the 29th electrode portion 515 is laminated on the surface of the 27th electrode portion 514 facing the first negative direction X2.

[0098] The 30th electrode portion 615 is made of the same material as the 2nd electrode portion 601. When the 15th layer L15 is viewed facing the first negative direction X2, the 30th electrode portion 615 has the same dimensions as the 28th electrode portion 614 and is located at the same position as the 28th electrode portion 614. Therefore, the 30th electrode portion 615 is laminated on the surface of the 28th electrode portion 614 facing the first negative direction X2.

[0099] The 8th inductor conductor 308 is made of the same material as the 1st inductor conductor 301. When the 15th layer L15 is viewed facing the first negative direction X2, the 8th inductor conductor 308 generally extends in a spiral shape around the geometric center of the 15th layer L15 as a whole. The first end portion 308A of the 8th inductor conductor 308 is substantially circular. The first end portion 308A of the 8th inductor conductor 308 is located on the surface of the via conductor 407 facing the first negative direction X2. Therefore, the first end portion 308A of the 8th inductor conductor 308 is connected to the via conductor 407.

[0100] The second end portion 308B of the eighth inductor conductor 308 is substantially circular in shape. When viewing the fifteenth layer L15 facing the first negative direction X2, the second end portion 308B is located at the same position as the second end portion 303B of the third inductor conductor 303. And when viewing the fifteenth layer L15 facing the first negative direction X2, the eighth inductor conductor 308 extends clockwise from the first end portion 308A toward the second end portion 308B. Also, the number of turns of the eighth inductor conductor 308 is about one turn. The wiring length of the eighth inductor conductor 308 is 0.78 units. The wiring width of the eighth inductor conductor 308 is the same as the wiring width of the first inductor conductor 301.

[0101] In the fifteenth layer L15, the portion excluding the twenty-ninth electrode portion 515, the thirtieth electrode portion 615, and the eighth inductor conductor 308 is the fifteenth insulating portion 215. The fifteenth insulating portion 215 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0102] The sixteenth layer L16 is laminated on the main surface of the fifteenth layer L15 facing the first negative direction X2. When viewing the sixteenth layer L16 facing the first negative direction X2, the sixteenth layer L16 has the same rectangular shape as the first layer L1. The sixteenth layer L16 is composed of a thirty-first electrode portion 516, a thirty-second electrode portion 616, a via conductor 408, and a sixteenth insulating portion 216.

[0103] The thirty-first electrode portion 516 is made of the same material as the first electrode portion 501. When viewing the sixteenth layer L16 facing the first negative direction X2, the thirty-first electrode portion 516 has the same dimensions as the twenty-ninth electrode portion 515 and is located at the same position as the twenty-ninth electrode portion 515. Therefore, the thirty-first electrode portion 516 is laminated on the surface of the twenty-ninth electrode portion 515 facing the first negative direction X2.

[0104] The 32nd electrode portion 616 is made of the same material as the 2nd electrode portion 601. When viewing the 16th layer L16 facing the first negative direction X2, the 32nd electrode portion 616 has the same dimensions as the 30th electrode portion 615 and is located at the same position as the 30th electrode portion 615. Therefore, the 32nd electrode portion 616 is laminated on the surface of the 30th electrode portion 615 facing the first negative direction X2.

[0105] The via conductor 408 is made of the same material as the first inductor conductor 301. The via conductor 408 is columnar and extends along the first axis X. The via conductor 408 is laminated on the surface of the second end portion 308B of the eighth inductor conductor 308 facing the first negative direction X2. Therefore, the via conductor 408 is electrically connected to the second end portion 308B of the eighth inductor conductor 308. And the via conductor 408 extends from the second end portion 308B of the eighth inductor conductor 308 in the first negative direction X2.

[0106] In the 16th layer L16, the portion excluding the 31st electrode portion 516, the 32nd electrode portion 616, and the via conductor 408 is the 16th insulating portion 216. The 16th insulating portion 216 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0107] The 17th layer L17 is laminated on the main surface of the 16th layer L16 facing the first negative direction X2. When viewing the 17th layer L17 facing the first negative direction X2, the 17th layer L17 has the same rectangular shape as the first layer L1. The 17th layer L17 is composed of a 33rd electrode portion 517, a 34th electrode portion 617, a ninth inductor conductor 309, and a 17th insulating portion 217.

[0108] The 33rd electrode portion 517 is made of the same material as the first electrode portion 501. When viewing the 17th layer L17 facing the first negative direction X2, the 33rd electrode portion 517 has the same dimensions as the 31st electrode portion 516 and is located at the same position as the 31st electrode portion 516. Therefore, the 33rd electrode portion 517 is laminated on the surface of the 31st electrode portion 516 facing the first negative direction X2.

[0109] The 34th electrode portion 617 is made of the same material as the 2nd electrode portion 601. When viewing the 17th layer L17 facing the first negative direction X2, the 34th electrode portion 617 has the same dimensions as the 32nd electrode portion 616 and is located at the same position as the 32nd electrode portion 616. Therefore, the 34th electrode portion 617 is laminated on the surface of the 32nd electrode portion 616 facing the first negative direction X2.

[0110] The 9th inductor conductor 309 is made of the same material as the 1st inductor conductor 301. When viewing the 17th layer L17 facing the first negative direction X2, as a whole, the 9th inductor conductor 309 extends in a spiral shape around generally the geometric center of the 9th layer L9. The first end portion 309A of the 9th inductor conductor 309 is substantially circular. The first end portion 309A of the 9th inductor conductor 309 is located on the surface of the via conductor 408 facing the first negative direction X2. Therefore, the first end portion 309A of the 9th inductor conductor 309 is connected to the via conductor 408.

[0111] The second end portion 309B of the 9th inductor conductor 309 is substantially circular. When viewing the 17th layer L17 facing the first negative direction X2, the second end portion 309B is located at the same position as the second end portion 306B of the 6th inductor conductor 306. And when viewing the 17th layer L17 facing the first negative direction X2, the 9th inductor conductor 309 extends clockwise from the first end portion 309A to the second end portion 309B. Also, the number of turns of the 9th inductor conductor 309 is about 1 turn. The wiring length of the 9th inductor conductor 309 is 0.78 units. The wiring width of the 9th inductor conductor 309 is the same as the wiring width of the 1st inductor conductor 301.

[0112] In the 17th layer L17, the portion excluding the 33rd electrode portion 517, the 34th electrode portion 617, and the 9th inductor conductor 309 is the 17th insulating portion 217. The 17th insulating portion 217 is made of a non-magnetic insulator of the same material as the 1st insulating portion 201.

[0113] The 18th layer L18 is laminated on the main surface of the 17th layer L17 facing the first negative direction X2. When viewing the 18th layer L18 facing the first negative direction X2, the 18th layer L18 has the same rectangular shape as the first layer L1. The 18th layer L18 is composed of a 35th electrode portion 518, a 36th electrode portion 618, a via conductor 409, and an 18th insulating portion 218.

[0114] The 35th electrode portion 518 is made of the same material as the first electrode portion 501. When viewing the 18th layer L18 facing the first negative direction X2, the 35th electrode portion 518 has the same dimensions as the 33rd electrode portion 517 and is located at the same position as the 33rd electrode portion 517. Therefore, the 35th electrode portion 518 is laminated on the surface of the 33rd electrode portion 517 facing the first negative direction X2.

[0115] The 36th electrode portion 618 is made of the same material as the second electrode portion 601. When viewing the 18th layer L18 facing the first negative direction X2, the 36th electrode portion 618 has the same dimensions as the 34th electrode portion 617 and is located at the same position as the 34th electrode portion 617. Therefore, the 36th electrode portion 618 is laminated on the surface of the 34th electrode portion 617 facing the first negative direction X2.

[0116] The via conductor 409 is made of the same material as the first inductor conductor 301. The via conductor 409 is columnar and extends along the first axis X. The via conductor 409 is laminated on the surface of the second end portion 309B of the ninth inductor conductor 309 facing the first negative direction X2. Therefore, the via conductor 409 is electrically connected to the second end portion 309B of the ninth inductor conductor 309. And the via conductor 409 extends from the second end portion 309B of the ninth inductor conductor 309 in the first negative direction X2.

[0117] In the 18th layer L18, the portion excluding the 35th electrode portion 518, the 36th electrode portion 618, and the via conductor 409 is the 18th insulating portion 218. The 18th insulating portion 218 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0118] The 19th layer L19 is laminated on the main surface of the 18th layer L18 facing the first negative direction X2. When viewing the 19th layer L19 facing the first negative direction X2, the 19th layer L19 has the same rectangular shape as the first layer L1. The 19th layer L19 is composed of a 37th electrode portion 519, a 38th electrode portion 619, a 10th inductor conductor 310, and a 19th insulating portion 219.

[0119] The 37th electrode portion 519 is made of the same material as the first electrode portion 501. When viewing the 19th layer L19 facing the first negative direction X2, the 37th electrode portion 519 has the same dimensions as the 35th electrode portion 518 and is located at the same position as the 35th electrode portion 518. Therefore, the 37th electrode portion 519 is laminated on the surface of the 35th electrode portion 518 facing the first negative direction X2.

[0120] The 38th electrode portion 619 is made of the same material as the second electrode portion 601. When viewing the 19th layer L19 facing the first negative direction X2, the 38th electrode portion 619 has the same dimensions as the 36th electrode portion 618 and is located at the same position as the 36th electrode portion 618. Therefore, the 38th electrode portion 619 is laminated on the surface of the 36th electrode portion 618 facing the first negative direction X2.

[0121] The 10th inductor conductor 310 is made of the same material as the first inductor conductor 301. When viewing the 19th layer L19 facing the first negative direction X2, the shape and arrangement of the 10th inductor conductor 310 are the same as those of the 7th inductor conductor 307. The 10th inductor conductor 310 extends clockwise from the first end 310A to the second end 310B. Also, the number of turns of the 10th inductor conductor 310 is approximately 0.5 turns. The wiring length of the 10th inductor conductor 310 is approximately 0.52 units. Also, the wiring width of the 10th inductor conductor 310 is the same as the wiring width of the first inductor conductor 301.

[0122] In the 19th layer L19, the portion excluding the 37th electrode portion 519, the 38th electrode portion 619, and the 5th inductor conductor 305 is the 19th insulating portion 219. The 19th insulating portion 219 is made of an insulator of the same material as the first insulating portion 201.

[0123] The 20th layer L20 is laminated on the main surface of the 19th layer L19 facing the first negative direction X2. When viewing the 20th layer L20 facing the first negative direction X2, the 20th layer L20 has the same rectangular shape as the first layer L1. The 20th layer L20 is composed of a 39th electrode portion 520, a 40th electrode portion 620, a via conductor 410, and a 20th insulating portion 220.

[0124] The 39th electrode portion 520 is made of the same material as the first electrode portion 501. When viewing the 20th layer L20 facing the first negative direction X2, the 39th electrode portion 520 has the same dimensions as the 37th electrode portion 519 and is located at the same position as the 37th electrode portion 519. Therefore, the 39th electrode portion 520 is laminated on the surface of the 37th electrode portion 519 facing the first negative direction X2.

[0125] The 40th electrode portion 620 is made of the same material as the second electrode portion 601. When viewing the 20th layer L20 facing the first negative direction X2, the 40th electrode portion 620 has the same dimensions as the 38th electrode portion 619 and is located at the same position as the 38th electrode portion 619. Therefore, the 40th electrode portion 620 is laminated on the surface of the 38th electrode portion 619 facing the first negative direction X2.

[0126] The via conductor 410 is made of the same material as the first inductor conductor 301. The shape and arrangement of the via conductor 410 are the same as those of the via conductor 407. In the 20th layer L20, the portion excluding the 39th electrode portion 520, the 40th electrode portion 620, and the via conductor 410 is the 20th insulating portion 220. The 20th insulating portion 220 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0127] The 21st layer L21 is laminated on the main surface of the 20th layer L20 facing the first negative direction X2. When viewing the 21st layer L21 facing the first negative direction X2, the 21st layer L21 has the same rectangular shape as the first layer L1. The 21st layer L21 is composed of a 41st electrode portion 521, a 42nd electrode portion 621, an 11th inductor conductor 311, and a 21st insulating portion 221.

[0128] The 41st electrode portion 521 is made of the same material as the 1st electrode portion 501. When viewing the 21st layer L21 facing the first negative direction X2, the 41st electrode portion 521 has the same dimensions as the 39th electrode portion 520 and is located at the same position as the 39th electrode portion 520. Therefore, the 41st electrode portion 521 is laminated on the surface of the 39th electrode portion 520 facing the first negative direction X2.

[0129] The 42nd electrode portion 621 is made of the same material as the 2nd electrode portion 601. When viewing the 21st layer L21 facing the first negative direction X2, the 42nd electrode portion 621 has the same dimensions as the 40th electrode portion 620 and is located at the same position as the 40th electrode portion 620. Therefore, the 42nd electrode portion 621 is laminated on the surface of the 40th electrode portion 620 facing the first negative direction X2.

[0130] The 11th inductor conductor 311 is made of the same material as the 1st inductor conductor 301. When viewing the 21st layer L21 facing the first negative direction X2, as a whole, the 11th inductor conductor 311 extends in a spiral shape around the approximate geometric center of the 21st layer L21. The first end portion 311A of the 11th inductor conductor 311 is substantially circular in shape. The first end portion 311A of the 11th inductor conductor 311 is located on the surface of the via conductor 410 facing the first negative direction X2. Therefore, the first end portion 311A of the 11th inductor conductor 311 is connected to the via conductor 410.

[0131] The second end portion 311B of the 11th inductor conductor 311 is substantially circular. When viewing the 21st layer L21 facing the first negative direction X2, the position of the second end portion 311B of the 11th inductor conductor 311 in the direction along the second axis Y is the approximate geometric center of the 21st layer L21. The position of the second end portion 311B of the 11th inductor conductor 311 in the direction along the third axis Z is on the side of the third positive direction Z1 with respect to the geometric center of the 21st layer L21. And when viewing the 21st layer L21 facing the first negative direction X2, the 11th inductor conductor 311 extends clockwise from the first end portion 311A toward the second end portion 311B. Also, the number of turns of the 11th inductor conductor 311 is approximately 0.5 turns. The wiring length of the 11th inductor conductor 311 is approximately 0.52 units. The wiring width of the 11th inductor conductor 311 is the same as the wiring width of the first inductor conductor 301.

[0132] In the 21st layer L21, the portion excluding the 41st electrode portion 521, the 42nd electrode portion 621, and the 11th inductor conductor 311 is the 21st insulating portion 221. The 21st insulating portion 221 is made of an insulator of the same material as the first insulating portion 201.

[0133] The 22nd layer L22 is laminated on the main surface of the 21st layer L21 facing the first negative direction X2. When viewing the 22nd layer L22 facing the first negative direction X2, the 22nd layer L22 has the same rectangular shape as the first layer L1. The 22nd layer L22 is composed of a 43rd electrode portion 522, a 44th electrode portion 622, a via conductor 411, and a 22nd insulating portion 222.

[0134] The 43rd electrode portion 522 is made of the same material as the first electrode portion 501. When viewing the 22nd layer L22 facing the first negative direction X2, the 43rd electrode portion 522 has the same dimensions as the 41st electrode portion 521 and is located at the same position as the 41st electrode portion 521. Therefore, the 43rd electrode portion 522 is laminated on the surface of the 41st electrode portion 521 facing the first negative direction X2.

[0135] The 44th electrode portion 622 is made of the same material as the 2nd electrode portion 601. When viewing the 22nd layer L22 facing the first negative direction X2, the 44th electrode portion 622 has the same dimensions as the 42nd electrode portion 621 and is located at the same position as the 42nd electrode portion 621. Therefore, the 44th electrode portion 622 is laminated on the surface of the 42nd electrode portion 621 facing the first negative direction X2.

[0136] The via conductor 411 is made of the same material as the first inductor conductor 301. The via conductor 411 is columnar and extends along the first axis X. The via conductor 411 is laminated on the surface of the second end portion 311B of the 11th inductor conductor 311 facing the first negative direction X2. Therefore, the via conductor 411 is electrically connected to the second end portion 311B of the 11th inductor conductor 311. And the via conductor 411 extends from the second end portion 311B of the 11th inductor conductor 311 in the first negative direction X2.

[0137] In the 22nd layer L22, the portion excluding the 43rd electrode portion 522, the 44th electrode portion 622, and the via conductor 411 is the 22nd insulating portion 222. The 22nd insulating portion 222 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0138] The 23rd layer L23 is laminated on the main surface of the 22nd layer L22 facing the first negative direction X2. When viewing the 23rd layer L23 facing the first negative direction X2, the 23rd layer L23 has the same rectangular shape as the first layer L1. The 23rd layer L23 is composed of a 45th electrode portion 523, a 46th electrode portion 623, a 12th inductor conductor 312, and a 23rd insulating portion 223.

[0139] The 45th electrode portion 523 is made of the same material as the first electrode portion 501. When viewing the 23rd layer L23 facing the first negative direction X2, the 45th electrode portion 523 has the same dimensions as the 43rd electrode portion 522 and is located at the same position as the 43rd electrode portion 522. Therefore, the 45th electrode portion 523 is laminated on the surface of the 43rd electrode portion 522 facing the first negative direction X2.

[0140] The 46th electrode part 623 is made of the same material as the 2nd electrode part 601. When viewing the 23rd layer L23 facing the first negative direction X2, the 46th electrode part 623 has the same dimensions as the 44th electrode part 622 and is located at the same position as the 44th electrode part 622. Therefore, the 46th electrode part 623 is laminated on the surface of the 44th electrode part 622 facing the first negative direction X2.

[0141] The 12th inductor conductor 312 is made of the same material as the 1st inductor conductor 301. When viewing the 23rd layer L23 facing the first negative direction X2, as a whole, the 12th inductor conductor 312 extends in a spiral shape around the geometric center of the 23rd layer L23 generally. The first end 312A of the 12th inductor conductor 312 is substantially circular. The first end 312A of the 12th inductor conductor 312 is located on the surface of the via conductor 411 facing the first negative direction X2. Therefore, the first end 312A of the 12th inductor conductor 312 is connected to the via conductor 411.

[0142] The second end 312B of the 12th inductor conductor 312 is a part that deviates from the circumferential path formed by the overlapping of the inductor conductors 30 in the 1st layer L1 to the 23rd layer L23 when viewed facing the first negative direction X2. The second end 312B is connected to the end on the third negative direction Z2 side in the direction along the third axis Z of the 46th electrode part 623. And when viewing the 23rd layer L23 facing the first negative direction X2, the 12th inductor conductor 312 extends clockwise from the first end 312A to the second end 312B. Note that the second end 312B of the 12th inductor conductor 312 is the second end of the entire inductor wiring 12. Also, the number of turns of the 12th inductor conductor 312 is about 0.5 turn. Excluding the second end 312B, the wiring length of the 12th inductor conductor 312 including the first end 312A is 0.52 units. The wiring width of the 12th inductor conductor 312 is the same as the wiring width of the 1st inductor conductor 301.

[0143] In the 23rd layer L23, the portion excluding the 45th electrode portion 523, the 46th electrode portion 623, and the 12th inductor conductor 312 is the 23rd insulating portion 223. The 23rd insulating portion 223 is made of a non-magnetic insulator of the same material as the 1st insulating portion 201.

[0144] The element body 11 has a 1st coating insulating layer 71 and a 2nd coating insulating layer 72. The 1st coating insulating layer 71 is laminated on the main surface of the 1st layer L1 facing the 1st positive direction X1. When the 1st coating insulating layer 71 is viewed facing the 1st negative direction X2, the 1st coating insulating layer 71 has the same rectangular shape as the 1st layer L1. The 1st coating insulating layer 71 is made of a non-magnetic insulator of the same material as the 1st insulating portion 201.

[0145] The 2nd coating insulating layer 72 is laminated on the main surface of the 23rd layer L23 facing the 1st negative direction X2. When the 2nd coating insulating layer 72 is viewed facing the 1st negative direction X2, the 2nd coating insulating layer 72 has the same rectangular shape as the 1st layer L1.

[0146] The 2nd coating insulating layer 72 has a 47th electrode portion 524, a 48th electrode portion 624, and a 24th insulating portion 224. The 47th electrode portion 524 is made of the same material as the 1st electrode portion 501. The 47th electrode portion 524 is exposed across from the end face in the 2nd positive direction Y1 in the 2nd coating insulating layer 72 to the main surface on the 1st negative direction X2 side in the 2nd coating insulating layer 72. Also, when viewed facing the 1st negative direction X2, a part of the 47th electrode portion 524 overlaps with the 45th electrode portion 523. A part of the 47th electrode portion 524 is connected to the 45th electrode portion 523.

[0147] The 48th electrode portion 624 is made of the same material as the 2nd electrode portion 601. The 48th electrode portion 624 is exposed across from the end face in the 2nd negative direction Y2 in the 2nd coating insulating layer 72 to the main surface on the 1st negative direction X2 side in the 2nd coating insulating layer 72. Also, when viewed facing the 1st negative direction X2, a part of the 48th electrode portion 624 overlaps with the 46th electrode portion 623. A part of the 48th electrode portion 624 is connected to the 46th electrode portion 623.

[0148] The 24th insulating portion 224 is the portion of the second coating insulating layer 72 excluding the 47th electrode portion 524 and the 48th electrode portion 624. The 24th insulating portion 224 is made of a non-magnetic insulator of the same material as the first insulating portion 201.

[0149] Note that the first coating insulating layer 71 may be formed by laminating a plurality of insulating layers. Also, some of the insulating layers may be colored. The same applies to the second coating insulating layer 72 in this regard.

[0150] The above-described first insulating portion 201 to 24th insulating portion 224 and the first coating insulating layer 71 are integrated. Therefore, there may be no physical boundary between the first insulating portion 201 to 24th insulating portion 224 and the insulator in the first coating insulating layer 71. Hereinafter, when there is no need to distinguish them, they are collectively referred to as the insulating portion 20.

[0151] Each of the above-described inductor conductors 30 and via conductors 40 is alternately laminated in the direction along the first axis X. That is, the inductor conductors 30 are located apart from each other along the first axis X. And each via conductor 40 connects the adjacent inductor conductors 30 along the first axis X.

[0152] Also, the inductor wiring 12 is integrated. That is, the first inductor conductor 301 to the 12th inductor conductor 312 and the via conductors 401 to 411 are integrated. Therefore, there may be no physical boundary between them. And the inductor wiring 12 is wound in a spiral shape as a whole. And the central axis of the winding in the inductor wiring 12 is an axis along the first axis X.

[0153] Furthermore, the above-described first electrode portion 501 to 47th electrode portion 524 are integrated. And they are combined to form the first electrode 50. Similarly, the above-described second electrode portion 601 to 48th electrode portion 624 are integrated. And they are combined to form the second electrode 60.

[0154] In this embodiment, the element body 11 of the multilayer inductor component 10 is composed of an insulating portion 20, a first electrode 50, and a second electrode 60. Note that the element body 11 is sintered. And the inductor wiring 12 extends inside the element body 11. Note that the inductor wiring 12, the first electrode 50, and the second electrode 60 may be integrated. Therefore, there may be no physical boundary between the inductor wiring 12 and the first electrode 50, and between the inductor wiring 12 and the second electrode 60.

[0155] As a result of laminating the first layer L1 to the twenty-third layer L23, the first coating insulating layer 71, and the second coating insulating layer 72, as shown in FIG. 1, the element body 11 is generally rectangular parallelepiped. Note that the first electrode 50 is exposed outside the element body 11 in the region from the first end face 11E to the bottom face 11A. Also, the second electrode 60 is exposed outside the element body 11 in the region from the second end face 11F to the bottom face 11A. That is, the first electrode 50 and the second electrode 60 are not exposed outside the element body 11 on the top face 11B.

[0156] As shown in FIG. 1, the multilayer inductor component 10 includes a first coating electrode 81 and a second coating electrode 82. The first coating electrode 81 covers the surface of the first electrode 50 that is exposed outside the element body 11. The first coating electrode 81 has a two-layer structure of nickel plating and tin plating, although not shown in the figure. Note that the portion where the first electrode 50 is exposed outside the element body 11 indicates the portion of the first electrode 50 that is not covered by the element body 11. Therefore, even if the first electrode 50 is covered by other layers, it is considered to be exposed outside the element body 11.

[0157] The second coating electrode 82 covers the surface of the second electrode 60 that is exposed outside the element body 11. The second coating electrode 82 has a two-layer structure of nickel plating and tin plating, although not shown in the figure. Note that in FIG. 2, the illustration of the first coating electrode 81 and the second coating electrode 82 is omitted.

[0158] <Regarding the conductor area> Here, the area of each inductor conductor 30 when viewed in the direction along the first axis X is defined as the conductor area. Also, in the present embodiment, the inductor wiring 12 has 12 inductor conductors 30. Further, in the direction along the first axis X, the conductor area of the inductor conductors 30 up to the 6th one counted from the inductor conductor 30 closest to the top surface 11B is defined as the top surface side conductor area TA. Specifically, the sum of the conductor areas of the first inductor conductor 301, the second inductor conductor 302, the third inductor conductor 303, the fourth inductor conductor 304, the fifth inductor conductor 305, and the sixth inductor conductor 306 is the top surface side conductor area TA. On the other hand, in the direction along the first axis X, the conductor area of the inductor conductors 30 up to the 6th one counted from the inductor conductor 30 closest to the bottom surface 11A is defined as the bottom surface side conductor area BA. Specifically, the sum of the conductor areas of the seventh inductor conductor 307, the eighth inductor conductor 308, the ninth inductor conductor 309, the tenth inductor conductor 310, the eleventh inductor conductor 311, and the twelfth inductor conductor 312 is the bottom surface side conductor area BA. At this time, the top surface side conductor area TA is 1.1 times or more the bottom surface side conductor area BA. Also, the top surface side conductor area TA is 2 times or less the bottom surface side conductor area BA.

[0159] The area of the inductor conductor 30 is measured as follows. First, in the base body 11, polishing is performed so that the first layer L1 is exposed. Then, using image analysis software, the conductor area of the first inductor conductor 301 in the cross section is measured. Next, polishing is performed so that the second layer L2 is exposed. Similarly, using image analysis software, the conductor area of the second inductor conductor 302 is measured. This is repeated to measure the conductor area of each inductor conductor 30. However, the conductor area of the first inductor conductor 301 includes the area of the second end 301B and does not include the area of the first end 301A. Also, the conductor area of the 12th inductor conductor 312 includes the area of the first end 312A and does not include the area of the second end 312B. On the other hand, the conductor area of the second inductor conductor 302 includes the area of the first end 302A and the area of the second end 302B. The same applies to the conductor areas of the third inductor conductor 303 to the 11th inductor conductor 311. That is, the conductor area is measured as the area of the overlapping portion of each inductor conductor 30 when viewed in perspective in the direction facing the first negative direction X2.

[0160] Here, as described above, the wiring widths of the respective inductor conductors 30 are substantially the same. Therefore, the ratio of the conductor areas is approximately equal to the ratio of the wiring lengths. And in the direction along the first axis X, the total wiring length of the inductor conductors 30 up to the 6th counted from the inductor conductor 30 closest to the top surface 11B is about 6.09 units. Also, in the direction along the first axis X, the total wiring length of the inductor conductors 30 up to the 6th counted from the inductor conductor 30 closest to the bottom surface 11A is about 3.65 units. Therefore, specifically, the top surface side conductor area TA is about 1.67 times that of the bottom surface side conductor area BA. Note that depending on the size of the second end 301B of the first inductor conductor 301 and the other substantially circular ends, the ratio of the conductor areas and the ratio of the wiring lengths may not be equal.

[0161] As described above, the second inductor conductor 302 and the fourth inductor conductor 304 have the longest wiring length among the inductor conductors 30. Therefore, the inductor conductors 30 with the largest conductor area are the above two inductor conductors 30. In other words, the inductor conductors 30 with the largest conductor area are included in the inductor conductors 30 up to the sixth one counted from the inductor conductor 30 closest to the top surface 11B in the direction along the first axis X.

[0162] Also, as described above, the seventh inductor conductor 307, the tenth inductor conductor 310, the eleventh inductor conductor 311, and the twelfth inductor conductor 312 have the shortest wiring length among the inductor conductors 30. Therefore, the inductor conductors 30 with the smallest conductor area are the seventh inductor conductor 307, the tenth inductor conductor 310, the eleventh inductor conductor 311, and the twelfth inductor conductor 312. In other words, the inductor conductors 30 with the smallest conductor area are included in the inductor conductors 30 up to the sixth one counted from the inductor conductor 30 closest to the bottom surface 11A in the direction along the first axis X.

[0163] Also, the twelfth inductor conductor 312 is one of the inductor conductors 30 with the smallest conductor area. That is, among the conductor areas of the plurality of inductor conductors 30, the conductor area of the inductor conductor 30 closest to the bottom surface 11A in the direction along the first axis X is the smallest.

[0164] Also, the maximum conductor area of the inductor conductor 30 is 1.3 times or more and 2.1 times or less the minimum conductor area. Specifically, the wiring length of the second inductor conductor 302 and the fourth inductor conductor 304, which are the inductor conductors 30 with the largest conductor area, is about 1.04 units. On the other hand, the wiring length of the seventh inductor conductor 307, the tenth inductor conductor 310, the eleventh inductor conductor 311, and the twelfth inductor conductor 312, which are the inductor conductors 30 with the smallest conductor area, is 0.52 units. Therefore, the maximum conductor area of the inductor conductor 30 is about 2.0 times the minimum conductor area.

[0165] <Regarding the laminated inductor component of the comparative example> Next, the laminated inductor component 10 serving as a comparative example will be described. As shown in FIG. 3, the laminated inductor component 10P includes an inductor wiring 12P. The inductor wiring 12P has 12 inductor conductors 30P and 11 via conductors 40P. In the laminated inductor component 10P, a layer having the inductor conductor 30P and a layer having the via conductor 40P are alternately stacked in the same manner as in the above-described embodiment. Note that the laminated inductor component 10P of the comparative example has the same configuration as that of the laminated inductor component 10 except for the inductor conductor 30P. Therefore, in the laminated inductor component 10P of the comparative example, the configurations common to the above-described laminated inductor component 10 are denoted by the same reference numerals and the description thereof is omitted. Also, the total number of turns of the inductor conductors is equal between the laminated inductor component 10 and the laminated inductor component 10P of the comparative example. Hereinafter, only the inductor conductor 30P will be described.

[0166] When viewing the first layer L1 facing the first negative direction X2, the shape and arrangement of the first inductor conductor 301P are the same as those of the first inductor conductor 301 in the above-described embodiment. Therefore, the number of turns of the first inductor conductor 301P is approximately 1.5 turns.

[0167] When viewing the third layer L3 facing the first negative direction X2, the second inductor conductor 302P extends clockwise from the first end 302PA toward the second end 302PB. The number of turns of the second inductor conductor 302P is approximately 1.25 turns. Here, the wiring length of the first inductor conductor 301P excluding the first end 301PA and including the second end 301PB is taken as 1 unit. At this time, the wiring length of the second inductor conductor 302P is approximately 0.83 units.

[0168] When viewing the fifth layer L5 facing the first negative direction X2, the third inductor conductor 303P extends clockwise from the first end 303PA toward the second end 303PB. The number of turns of the third inductor conductor 303P is approximately 1 turn. The wiring length of the third inductor conductor 303P is approximately 0.78 units.

[0169] When viewing the seventh layer L7 facing the first negative direction X2, the shape and arrangement of the fourth inductor conductor 304P are symmetric twice that of the second inductor conductor 302P. Therefore, the number of turns of the fourth inductor conductor 304P is approximately 1.25 turns. Also, the wiring length of the fourth inductor conductor 304P is approximately 0.83 units.

[0170] When viewing the ninth layer L9 facing the first negative direction X2, the shape and arrangement of the fifth inductor conductor 305P are symmetric twice that of the third inductor conductor 303P. Therefore, the number of turns of the fifth inductor conductor 305P is approximately 1 turn. Also, the wiring length of the fifth inductor conductor 305P is approximately 0.78 units.

[0171] When viewing the eleventh layer L11 facing the first negative direction X2, the shape and arrangement of the sixth inductor conductor 306P are the same as those of the second inductor conductor 302P. Therefore, the number of turns of the sixth inductor conductor 306P is approximately 1.25 turns. Also, the wiring length of the sixth inductor conductor 306P is approximately 0.83 units.

[0172] When viewing the thirteenth layer L13 facing the first negative direction X2, the shape and arrangement of the seventh inductor conductor 307P are the same as those of the third inductor conductor 303P. Therefore, the number of turns of the seventh inductor conductor 307P is approximately 1 turn. Also, the wiring length of the fifth inductor conductor 305P is approximately 0.78 units.

[0173] When viewing the fifteenth layer L15 facing the first negative direction X2, the shape and arrangement of the eighth inductor conductor 308P are the same as those of the fourth inductor conductor 304P. Therefore, the number of turns of the eighth inductor conductor 308P is approximately 1.25 turns. Also, the wiring length of the eighth inductor conductor 308P is approximately 0.83 units.

[0174] When viewing the 17th layer L17 facing the first negative direction X2, the shape and arrangement of the ninth inductor conductor 309P are the same as those of the fifth inductor conductor 305P. Therefore, the number of turns of the ninth inductor conductor 309P is approximately one turn. Also, the wiring length of the ninth inductor conductor 309P is approximately 0.78 units.

[0175] When viewing the 19th layer L19 facing the first negative direction X2, the shape and arrangement of the tenth inductor conductor 310P are the same as those of the sixth inductor conductor 306P. Therefore, the number of turns of the tenth inductor conductor 310P is approximately 1.25 turns. Also, the wiring length of the tenth inductor conductor 310P is approximately 0.83 units.

[0176] When viewing the 21st layer L21 facing the first negative direction X2, the shape and arrangement of the eleventh inductor conductor 311P are the same as those of the seventh inductor conductor 307P. Therefore, the number of turns of the eleventh inductor conductor 311P is approximately one turn. Also, the wiring length of the eleventh inductor conductor 311P is approximately 0.78 units.

[0177] When viewing the 23rd layer L23 facing the first negative direction X2, the twelfth inductor conductor 312P extends clockwise from the first end 312PA to the second end 312PB. The number of turns of the twelfth inductor conductor 312P is approximately one turn. The wiring length of the twelfth inductor conductor 312P is approximately 0.78 units.

[0178] The wiring width of each inductor conductor 30P in the multilayer inductor component 10P is constant except for the first end and the second end. Therefore, the conductor area of each inductor conductor 30P is proportional to the wiring length of each inductor conductor 30P.

[0179] The top surface side conductor area TA in the multilayer inductor component 10P of the above comparative example is approximately 1.05 times that of the bottom surface side conductor area BA. That is, the top surface side conductor area TA is less than 1.1 times that of the bottom surface side conductor area BA.

[0180] <Regarding the simulation> As shown in FIG. 4, the inductance value and Q value when a specific voltage was applied to the laminated inductor component 10 and the laminated inductor component 10P of the comparative example were simulated. In the simulation, the wiring widths of the respective inductor conductors were changed in the laminated inductor component 10 and the laminated inductor component 10P of the comparative example. Specifically, the wiring widths in the simulation were the first line width MW1, the second line width MW2, and the third line width MW3. The second line width MW2 is thinner in wiring width than the first line width MW1. The third line width MW3 is thinner in wiring width than the second line width MW2. Also, the frequency of the alternating voltage at the first line width MW1 to the third line width MW3 was 500 MHz. In FIG. 4, the test results at the first line width MW1 are shown by squares, the test results at the second line width MW2 are shown by triangles, and the test results at the third line width MW3 are shown by circles.

[0181] At the first line width MW1, the Q value of the laminated inductor component 10 was slightly higher than the Q value of the laminated inductor component 10P of the comparative example. At the second line width MW2, the Q value of the laminated inductor component 10 was higher than the Q value of the laminated inductor component 10P of the comparative example. At the third line width MW3, the Q value of the laminated inductor component 10 was higher than the Q value of the laminated inductor component 10P of the comparative example. That is, at any wiring width, the Q value of the laminated inductor component 10 was higher than the Q value of the laminated inductor component 10P of the comparative example.

[0182] Also, in any of the cases of the first line width MW1 to the third line width MW3, the inductance value of the laminated inductor component 10 decreased compared to the laminated inductor component 10P of the comparative example. However, the amount of decrease in the inductance value was suppressed as the wiring width became thinner.

[0183] <Effect of this Embodiment> (1) In the above embodiment, the top surface side conductor area TA is 1.1 times or more the bottom surface side conductor area BA. According to such a configuration, on the side closer to the bottom surface 11A, the conductor area of the inductor conductor 30 facing the first electrode 50 and the second electrode 60 can be reduced. Thereby, the stray capacitance generated between each electrode and the inductor conductor 30 can be reduced. Therefore, the Q value of the multilayer inductor component 10 can be improved.

[0184] Also, in the above configuration, the total of the top surface side conductor areas TA is larger than the total of the bottom surface side conductor areas BA. That is, the conductor area of the inductor conductor 30 can be secured at a location where it is difficult to contribute to the stray capacitance generated between the inductor conductor 30 and each electrode. Therefore, according to the above configuration, it is possible to suppress a decrease in the inductance value of the multilayer inductor component 10.

[0185] (2) The greater the difference between the bottom surface side conductor area BA and the total of the top surface side conductor areas TA, the greater the internal stress generated when the multilayer inductor component 10 is sintered. And due to the internal stress, there is a risk of cracks or the like occurring in the multilayer inductor component 10. In the above embodiment, the top surface side conductor area TA is 2 times or less the bottom surface side conductor area BA. That is, according to the above configuration, an increase in the internal stress of the multilayer inductor component 10 can be suppressed.

[0186] (3) Suppose that in the multilayer inductor component 10, the wiring widths of the inductor conductors 30 are different. For example, assume that the wiring widths of the seventh inductor conductor 307 to the twelfth inductor conductor 312 are smaller than the wiring widths of the first inductor conductor 301 to the sixth inductor conductor 306. And assume that due to this difference in wiring width, the total of the top surface side conductor areas TA is larger than the total of the bottom surface side conductor areas BA.

[0187] In this case, each cross-sectional area perpendicular to the extending direction of each inductor conductor 30 of the seventh inductor conductor 307 to the twelfth inductor conductor 312 is smaller than each cross-sectional area perpendicular to the extending direction of each inductor conductor 30 of the first inductor conductor 301 to the sixth inductor conductor 306. When the cross-sectional area is small, the risk of disconnection due to heat generated during use of the laminated inductor component 10 and heat during firing increases.

[0188] In the above embodiment, the wiring widths of the respective inductor conductors 30 are the same. That is, the cross-sectional area perpendicular to the direction in which each inductor conductor 30 extends in each inductor conductor 30 is the same. As a result, according to the above configuration, the risk of disconnection of the inductor conductor 30 as described above can be reduced.

[0189] (4) In the above embodiment, the maximum conductor area of the inductor conductor 30 is 1.3 times or more and 2.1 times or less with respect to the minimum conductor area. Specifically, the maximum conductor area of the inductor conductor 30 is about 2 times the minimum conductor area. In this way, the difference between the maximum conductor area and the minimum conductor area of the inductor conductor 30 is not extreme. Therefore, it is possible to prevent a large internal stress from occurring in the portion between the inductor conductor 30 having the largest conductor area and the inductor conductor 30 having the smallest conductor area. From the viewpoint of improving the Q value, the maximum conductor area of the inductor conductor 30 is preferably 1.3 times or more the minimum conductor area.

[0190] (5) In the above embodiment, the inductor conductor 30 having the largest conductor area is the inductor conductor 30 up to the sixth one counted from the inductor conductor 30 closest to the top surface 11B in the direction along the first axis X. That is, the inductor conductor 30 having a large conductor area is arranged on the side far from the bottom surface 11A. According to this configuration, the stray capacitance generated between each electrode and the inductor conductor 30 can be more effectively suppressed.

[0191] (6) In the above embodiment, the length of the long side of the bottom surface 11A is 0.4 mm, and the length of the short side of the bottom surface 11A is 0.2 mm. Thus, in the small-sized laminated inductor component 10, the distance between each electrode and the inductor conductor 30 is likely to be short. That is, in such a small-sized laminated inductor component 10, the stray capacitance is likely to be large. Therefore, it is particularly suitable to apply the configuration related to the conductor area to such a small-sized laminated inductor component 10.

[0192] (7) If each electrode is also located on the top surface 11B side, a stray capacitance may be generated between the electrode on the top surface 11B side and the inductor conductor 30. In the above embodiment, each electrode is not exposed outside the base body 11 on the top surface 11B. In the above embodiment, the generation of the stray capacitance as described above can be prevented.

[0193] (8) In the above embodiment, the bottom surface side conductor area BA is smaller than the top surface side conductor area TA. In such a configuration, compared with a configuration in which the bottom surface side conductor area BA is about the same as the top surface side conductor area TA, the volume ratio of the insulating portion 20 in the base body 11 is larger on the side closer to the bottom surface 11A. Also, the material of the insulating portion 20 has higher strength than the material of the inductor conductor 30. Therefore, in the above embodiment, when mounting the laminated inductor component 10 on a substrate or the like, even if the base body 11 collides with the substrate or the like, it is difficult for the base body 11 to chip and crack.

[0194] (9) In the above embodiment, the inductor conductor 30 with the smallest conductor area is the inductor conductor 30 closest to the bottom surface 11A. If the ratio of the top surface side conductor area TA to the bottom surface side conductor area BA is the same, the smaller the conductor area of the inductor conductor 30 closest to the bottom surface 11A, the more it leads to an improvement in the Q value.

[0195] <Modified Example> This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a range where there is no technical contradiction.

[0196] · The base body 11 may be a rectangular parallelepiped that is long in the direction along the first axis X, or may be a rectangular parallelepiped that is long in the direction along the third axis Z. · The base body 11 may be a rectangular parallelepiped in which the dimensions in the direction along the first axis X, the dimensions in the direction along the second axis Y, and the dimensions in the direction along the third axis Z are equal. That is, the lengths of the long side and the short side of the bottom surface 11A are not limited to the examples of the above embodiment. In order to obtain the effect described in (6), it is preferable that the length of the long side of the bottom surface 11A is 0.63 mm or less, and the length of the short side of the bottom surface 11A is 0.33 mm or less.

[0197] · The material of the insulating portion 20 is not limited to the examples of the above embodiment, and any insulator may be used. For example, the material of the insulating portion 20 may be a magnetic insulator. Also, a part of the insulating portion 20 may be a non-magnetic or magnetic insulator different from other parts.

[0198] · As long as the first electrode 50 and the second electrode 60 are exposed outside the base body 11 on the bottom surface 11A, their shapes and positions do not matter. For example, the first electrode 50 may be a five-sided electrode that covers five surfaces of the base body 11 other than the second end surface 11F. Also, the first electrode 50 may be configured to be exposed only on the bottom surface 11A. In this regard, the same applies to the second electrode 60.

[0199] · The first covering electrode 81 and the second covering electrode 82 may be composed of three or more layers. Also, the material of each layer in the first covering electrode 81 and the second covering electrode 82 can be adopted as long as it is a conductive material. Furthermore, the first covering electrode 81 and the second covering electrode 82 may be omitted.

[0200] · As long as the requirement that the top surface side conductor area TA is 1.1 times or more the bottom surface side conductor area BA is satisfied, the wiring width may be different for each inductor conductor 30. Also, the thicknesses of the first layer L1 to the twenty-third layer L23 may be different from each other. That is, the thickness may be different for each inductor conductor 30.

[0201] · The total number of inductor conductors 30 may be more or less than that in the above-described embodiment. Also, when the total number of inductor conductors 30 is N, the sum of the conductor areas of the inductor conductors 30 up to the N / 2-th (where the decimal part is truncated) counted from the inductor conductor 30 closest to the top surface 11B is defined as the top surface side conductor area TA. Further, the sum of the conductor areas of the inductor conductors 30 up to the N / 2-th (where the decimal part is truncated) counted from the inductor conductor 30 closest to the bottom surface 11A is defined as the bottom surface side conductor area BA. That is, when the total number of inductor conductors 30 is odd, the conductor area of the central inductor conductor 30 in the direction along the first axis X does not belong to either the top surface side conductor area TA or the bottom surface side conductor area BA.

[0202] · The magnification of the top surface side conductor area TA with respect to the bottom surface side conductor area BA is not limited as long as it is 1.1 times or more. However, in order to obtain the effect described in (2), it is preferable that the top surface side conductor area TA is 2 times or less the bottom surface side conductor area BA.

[0203] · The largest conductor area may be less than 1.3 times the smallest conductor area. Also, in order to obtain the effect of (2), it is preferable that the largest conductor area is 2.1 times or less the smallest conductor area.

[0204] · The inductor conductor 30 with the smallest conductor area may be any of the inductor conductors 30 up to the 6-th counted from the inductor conductor 30 closest to the bottom surface 11A in the direction along the first axis X. Also, the inductor conductor 30 with the largest conductor area may be any of the inductor conductors 30 up to the 6-th counted from the inductor conductor 30 closest to the top surface 11B in the direction along the first axis X.

[0205] · Further, the inductor conductor 30 with the largest conductor area may be any one of the inductor conductors 30 from the first inductor conductor 30 closest to the bottom surface 11A to the sixth inductor conductor 30 in the direction along the first axis X. Similarly, the inductor conductor 30 with the smallest conductor area may be any one of the inductor conductors 30 from the first inductor conductor 30 closest to the top surface 11B to the sixth inductor conductor 30 in the direction along the first axis X. Even in these cases, as long as the top surface side conductor area TA is 1.1 times or more the bottom surface side conductor area BA as a whole.

[0206] · In the above embodiment, as long as the top surface side conductor area TA is 1.1 times or more the bottom surface side conductor area BA, the inductor conductor 30 with a large conductor area does not have to be concentrated on the side closer to the top surface 11B.

[0207] For example, assuming that the total number of inductor conductors 30 is N, and X and Y different from each other are integers of 1 or more and less than N. At this time, the conductor area of the Xth inductor conductor 30 counted from the inductor conductor 30 closest to the bottom surface 11A may be larger than the conductor area of the (X + 1)th inductor conductor 30 counted from the inductor conductor 30 closest to the bottom surface 11A. Also, the conductor area of the Yth inductor conductor 30 counted from the inductor conductor 30 closest to the bottom surface 11A may be smaller than the conductor area of the (Y + 1)th inductor conductor 30 counted from the inductor conductor 30 closest to the bottom surface 11A. That is, one or more X and Y satisfying the above relationship may exist.

[0208] For example, the stacked inductor component 10S shown in FIG. 5 includes an inductor wiring 12S. The inductor wiring 12S has 12 inductor conductors 30S and 11 via conductors 40S. In the stacked inductor component 10S, a layer having the inductor conductors 30S and a layer having the via conductors 40S are alternately stacked in the same manner as in the above-described embodiment. Note that the stacked inductor component 10S in FIG. 5 has the same configuration as that of the stacked inductor component 10 in the above-described embodiment, except for the inductor conductors 30S. Therefore, in the stacked inductor component 10S in FIG. 5, the configurations common to the stacked inductor component 10 in the above-described embodiment are denoted by the same reference numerals and the description thereof is omitted. Hereinafter, only the inductor conductors 30S will be described.

[0209] When the first layer L1 is viewed in the first negative direction X2, the shape and arrangement of the first inductor conductor 301S are the same as those of the first inductor conductor 301 in the above-described embodiment. Therefore, the number of turns of the first inductor conductor 301S is about 1.5 turns.

[0210] When the third layer L3 is viewed in the first negative direction X2, the shape and arrangement of the second inductor conductor 302S are the same as those of the second inductor conductor 302 in the above-described embodiment. Therefore, the number of turns of the second inductor conductor 302S is about 1.75 turns. Here, the wiring length of the first inductor conductor 301S including the second end 301SB except for the first end 301SA is taken as 1 unit. At this time, the wiring length of the second inductor conductor 302S is about 1.04 units.

[0211] When the fifth layer L5 is viewed in the first negative direction X2, the third inductor conductor 303S extends clockwise from the first end 303SA toward the second end 303SB. The number of turns of the third inductor conductor 303S is about 0.5 turns. The wiring length of the third inductor conductor 303S is about 0.86 units.

[0212] When viewing the seventh layer L7 facing the first negative direction X2, the shape of the fourth inductor conductor 304S is the same as that of the seventh inductor conductor 307 in the above embodiment. Therefore, the number of turns of the fourth inductor conductor 304S is approximately 0.5 turn. The wiring length of the fourth inductor conductor 304S is approximately 0.52 unit.

[0213] When viewing the ninth layer L9 facing the first negative direction X2, the shape of the fifth inductor conductor 305S is the same as that of the fifth inductor conductor 305 in the above embodiment. Therefore, the number of turns of the fifth inductor conductor 305S is approximately 1.5 turns. The wiring length of the fifth inductor conductor 305S is approximately 1 unit.

[0214] When viewing the eleventh layer L11 facing the first negative direction X2, the shape and arrangement of the sixth inductor conductor 306S are the same as those of the sixth inductor conductor 306 in the above embodiment. Therefore, the number of turns of the sixth inductor conductor 306S is approximately 1.5 turns. The wiring length of the sixth inductor conductor 306S is approximately 1 unit.

[0215] When viewing the thirteenth layer L13 facing the first negative direction X2, the shape and arrangement of the seventh inductor conductor 307S are the same as those of the seventh inductor conductor 307 in the above embodiment. The number of turns of the seventh inductor conductor 307S is approximately 0.5 turn. The wiring length of the seventh inductor conductor 307S is approximately 0.52 unit.

[0216] When viewing the fifteenth layer L15 facing the first negative direction X2, the shape and arrangement of the eighth inductor conductor 308S are the same as those obtained by inverting the third inductor conductor 303S in the direction along the second axis Y. The number of turns of the eighth inductor conductor 308S is approximately 0.5 turn. The wiring length of the eighth inductor conductor 308S is approximately 0.86 unit.

[0217] When viewing the 17th layer L17 facing the first negative direction X2, the shape and arrangement of the ninth inductor conductor 309S are the same as those obtained by inverting the second inductor conductor 302S in the direction along the second axis Y. Therefore, the number of turns of the ninth inductor conductor 309S is approximately 1.75 turns. The wiring length of the ninth inductor conductor 309S is approximately 1.04 units.

[0218] When viewing the 19th layer L19 facing the first negative direction X2, the shape and arrangement of the tenth inductor conductor 310S are the same as those of the second inductor conductor 302S. Therefore, the number of turns of the tenth inductor conductor 310S is approximately 1.75 turns. The wiring length of the tenth inductor conductor 310S is approximately 1.04 units.

[0219] When viewing the 21st layer L21 facing the first negative direction X2, the eleventh inductor conductor 311S extends clockwise from the first end 311SA to the second end 311SB. The number of turns of the eleventh inductor conductor 311S is approximately 0.25 turns. The wiring length of the eleventh inductor conductor 311S is approximately 0.39 units.

[0220] When viewing the 23rd layer L23 facing the first negative direction X2, the twelfth inductor conductor 312S extends substantially parallel to the second axis Y. The number of turns of the twelfth inductor conductor 312S is 0 turns. The wiring length of the twelfth inductor conductor 312S is 0.26 units. That is, the twelfth inductor conductor 312S has the shortest wiring length among the inductor conductors 30.

[0221] The wiring width of each inductor conductor 30S in the laminated inductor component 10S is constant except for the first end and the second end. The top surface side conductor area TA of the laminated inductor component 10S in the modification example shown in FIG. 5 above is approximately 1.32 times the bottom surface side conductor area BA. That is, the top surface side conductor area TA is 1.1 times or more the bottom surface side conductor area BA.

[0222] In the modification example shown in FIG. 5, the conductor area of the fourth inductor conductor 30S counted from the inductor conductor 30S closest to the bottom surface 11A is larger than the conductor area of the fifth inductor conductor 30S counted from the inductor conductor 30S closest to the bottom surface 11A. Also, the conductor area of the second inductor conductor 30S counted from the inductor conductor 30S closest to the bottom surface 11A is smaller than the conductor area of the third inductor conductor 30S counted from the inductor conductor 30S closest to the bottom surface 11A.

[0223] Further, according to the configuration of the example shown in FIG. 5, when looking in order from the side closer to the bottom surface 11A, there are portions where the conductor areas of two adjacent inductor conductors 30S increase and portions where the conductor areas of two adjacent inductor conductors 30S decrease, and they are mixed. Specifically, the portions where the conductor area increases and the portions where the conductor area decreases alternate every two inductor conductors 30S. In this way, by mixing the portions where the conductor area increases and the portions where it decreases, it is possible to prevent stress from concentrating at specific locations inside the base body 11.

[0224] The technical idea derivable from the above-described embodiment and modification example is described below. [1]A rectangular parallelepiped-shaped element having six outer surfaces, and an inductor wiring extending inside the element, the element having an electrode connected to the inductor wiring, and among the six outer surfaces of the element, when a specific one of the surfaces is taken as the bottom surface and the surface parallel to the bottom surface is taken as the top surface, the electrode is exposed to the outside of the element on the bottom surface, the inductor wiring having a plurality of inductor conductors extending parallel to the bottom surface and via conductors extending along an orthogonal axis orthogonal to the bottom surface, each of the inductor conductors being spaced apart from each other along the orthogonal axis, the via conductors connecting the adjacent inductor conductors to each other in the direction along the orthogonal axis, when viewed in the direction facing along the orthogonal axis, taking the area of each inductor conductor as the conductor area and the total number of the inductor conductors as N, in the direction along the orthogonal axis, the total conductor area of the inductor conductors up to the N / 2 (where the decimal part is truncated) -th one counted from the inductor conductor closest to the top surface, which is the top surface side conductor area, is 1.1 times or more the total conductor area of the inductor conductors up to the N / 2 (where the decimal part is truncated) -th one counted from the inductor conductor closest to the bottom surface, which is the bottom surface side conductor area, a laminated inductor component.

[0225] [2]The laminated inductor component according to [1], wherein the top surface side conductor area is 2 times or less the bottom surface side conductor area. [3]The inductor conductor having the largest conductor area is one of the inductor conductors up to the N / 2 (where the decimal part is truncated) -th one counted from the inductor conductor closest to the top surface in the direction along the orthogonal axis, and the inductor conductor having the smallest conductor area is one of the inductor conductors up to the N / 2 (where the decimal part is truncated) -th one counted from the inductor conductor closest to the bottom surface in the direction along the orthogonal axis, the laminated inductor component according to [1] or [2].

[0226] [4]The laminated inductor component according to [3], wherein the largest conductor area is 1.3 times or more and 2.1 times or less the smallest conductor area. [5] Among the conductor areas of the plurality of the inductor conductors, the conductor area of the inductor conductor closest to the bottom surface in the direction along the quadrature axis is the smallest. The laminated inductor component according to any one of [1] to [4].

[0227] [6] The wiring widths of the respective inductor conductors are the same. The laminated inductor component according to any one of [1] to [5]. [7] The length of the long side of the bottom surface is 0.63 mm or less, and the length of the short side of the bottom surface is 0.33 mm or less. The laminated inductor component according to any one of [1] to [6].

[0228] [8] The electrode is not exposed outside the element body on the top surface. The laminated inductor component according to any one of [1] to [7]. [9] When X and Y which are different from each other are integers of 1 or more and less than N, the conductor area of the X-th inductor conductor counted from the inductor conductor closest to the bottom surface is larger than the conductor area of the (X + 1)-th inductor conductor counted from the inductor conductor closest to the bottom surface, and the conductor area of the Y-th inductor conductor counted from the inductor conductor closest to the bottom surface is smaller than the conductor area of the (Y + 1)-th inductor conductor counted from the inductor conductor closest to the bottom surface. There is at least one set of X and Y. The laminated inductor component according to any one of [1] to [8].

Explanation of Signs

[0229] BA... Bottom surface side conductor area TA... Top surface side conductor area X... First axis 10... Laminated inductor component 11... Element body 11A... Bottom surface 11B... Top surface 12... Inductor wiring 30... Inductor conductor 40... Via conductor 50... First electrode 60... Second electrode

Claims

1. A rectangular parallelepiped body having six outer surfaces, an inductor wiring extending inside the body, and comprising: The body has an electrode connected to the inductor wiring, When one specific surface among the six outer surfaces of the body is defined as the bottom surface and the surface parallel to the bottom surface is defined as the top surface, The electrode is exposed to the outside of the body on the bottom surface, The inductor wiring has a plurality of inductor conductors extending parallel to the bottom surface and via conductors extending along an orthogonal axis orthogonal to the bottom surface, Each of the inductor conductors is located at a distance from each other along the orthogonal axis, The via conductor connects the adjacent inductor conductors along the direction of the orthogonal axis, When the area of each inductor conductor when viewed in the direction along the orthogonal axis is defined as the conductor area and the total number of the inductor conductors is defined as N, In the direction along the orthogonal axis, the total conductor area of the inductor conductors up to the N / 2 (where the decimal part is truncated) -th inductor conductor counted from the inductor conductor closest to the top surface, which is the top - side conductor area, is 1.1 times or more the total conductor area of the inductor conductors up to the N / 2 (where the decimal part is truncated) -th inductor conductor counted from the inductor conductor closest to the bottom surface, which is the bottom - side conductor area, When looking at the plurality of inductor conductors from the bottom - side to the top - side, there is a portion where the inductor conductors with a turn number less than 1, the inductor conductors with a turn number of 1 or more, the inductor conductors with a turn number of 1 or more, the inductor conductors with a turn number less than 1, the inductor conductors with a turn number less than 1, and the inductor conductors with a turn number of 1 or more are arranged in this order A multilayer inductor component.

2. The top - side conductor area is 2 times or less the bottom - side conductor area The multilayer inductor component according to Claim 1.

3. The inductor conductor with the largest conductor area is one of the inductor conductors up to the N / 2 (where the decimal part is truncated) -th inductor conductor counted from the inductor conductor closest to the top surface in the direction along the orthogonal axis, The inductor conductor with the smallest conductor area is one of the inductor conductors up to the N / 2 (where the decimal part is truncated) -th inductor conductor counted from the inductor conductor closest to the bottom surface in the direction along the orthogonal axis The laminated inductor component according to claim 1.

4. The maximum conductor area is 1.3 times or more and 2.1 times or less the minimum conductor area. The laminated inductor component according to claim 3.

5. Among the conductor areas of the plurality of inductor conductors, the conductor area of the inductor conductor closest to the bottom surface in the direction along the orthogonal axis is the smallest. The laminated inductor component according to claim 1.

6. The wiring widths of the respective inductor conductors are the same. The laminated inductor component according to claim 1.

7. The length of the long side of the bottom surface is 0.63 mm or less, The length of the short side of the bottom surface is 0.33 mm or less. The laminated inductor component according to claim 1.

8. The electrode is not exposed outside the element body on the top surface. The laminated inductor component according to claim 1.

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