Coil component

Abstract

To provide a coil component that suppresses separation of an external electrode from an element body and suppresses an increase in stray capacitance formed between a coil and the external electrode.SOLUTION: A coil component ED1 includes: an element body 1; external electrodes 10 and 20 disposed on a main surface 1a so as to be spaced apart from each other in a second direction D2; a coil 30 disposed in the element body 1 and electrically connected to the external electrodes 10 and 20; a conductor 11 coupled to the external electrode 10 and disposed in the element body 1; and a conductor 21 coupled to the external electrode 20 and disposed in the element body 1. The coil 30 includes: a plurality of wiring parts 31; and a plurality of wiring parts 32 disposed between a plurality of wiring parts 31 and a main surface 1b. The conductor 11 is located between two wiring parts 31 adjacent to each other among the plurality of wiring parts 31 when viewed from a first direction D1. The conductor 21 is located between two wiring parts 31 adjacent to each other among the plurality of wiring parts 31 when viewed from the first direction D1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a coil component. [Background technology]

[0002] A known coil component includes an element body, first and second external electrodes disposed on the element body, and a coil disposed within the element body (see, for example, Patent Document 1). The element body includes, for example, a first main surface and a second main surface facing each other. The first and second external electrodes are, for example, disposed on the first main surface and spaced apart from each other. The coil is, for example, electrically connected to the first and second external electrodes and includes a plurality of first wiring portions and a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-141945 Summary of the Invention [Problem to be solved by the invention]

[0004] Each of the first to third aspects of the present invention aims to provide a coil component that suppresses peeling of the external electrodes from the element body and suppresses an increase in stray capacitance formed between the coil and the external electrodes. [Means for solving the problem]

[0005] A coil component according to a first aspect of the present invention comprises an element body including first and second main surfaces opposing each other in a first direction, first and second external electrodes spaced apart from each other and disposed on the first main surface in a second direction intersecting the first direction, a coil disposed within the element body and electrically connected to the first and second external electrodes, a first conductor coupled to the first external electrode and disposed inside the element body relative to the first external electrode, and a second conductor coupled to the second external electrode and disposed inside the element body relative to the second external electrode. The coil includes a plurality of first wiring portions and a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface. The first conductor is located between two adjacent first wiring portions of the plurality of first wiring portions as viewed from the first direction. The second conductor is located between two adjacent first wiring portions of the plurality of first wiring portions as viewed from the first direction.

[0006] In the first aspect, the first conductor, which is located inside the element body relative to the first external electrode, prevents the first external electrode from peeling off from the element body, and the second conductor, which is located inside the element body relative to the second external electrode, prevents the second external electrode from peeling off from the element body. In the first aspect, the first conductor is spaced from the coil by an amount corresponding to the distance between two adjacent first wiring portions when viewed from the first direction. The first aspect suppresses an increase in stray capacitance between the coil and the first conductor, which is formed due to the arrangement of the first conductor. The second conductor is spaced from the coil by an amount corresponding to the distance between the two adjacent first wiring portions when viewed from the first direction. The first aspect suppresses an increase in stray capacitance between the coil and the second conductor, which is formed due to the arrangement of the second conductor.

[0007] In the first aspect, the first conductor may include a region facing at least one of two adjacent first wiring portions in the first direction, and the second conductor may include a region facing at least one of two adjacent first wiring portions in the first direction. The configuration in which the first conductor and the second conductor include the opposing regions increases the proportion of the element body occupied by the first conductor and the second conductor, thereby reliably preventing the first and second external electrodes from peeling off from the element body.

[0008] In the first aspect, the area of the first conductor located between the two first wiring portions may be larger than the area of the opposing region, and the area of the second conductor located between the two first wiring portions may be larger than the area of the opposing region. The configuration in which the areas of the first and second conductors located between the two first wiring portions are larger than the areas of the opposing regions reduces the increase in the distance between the first and second conductors and the coil, thereby reliably suppressing the increase in stray capacitance between the first and second conductors and the coil that occurs due to the arrangement of the first and second conductors.

[0009] In the first aspect, an outer edge of the first conductor opposite to the first external electrode may be inclined with respect to the first direction. An outer edge of the second conductor opposite to the second external electrode may be inclined with respect to the first direction. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which the outer edge of the first conductor opposite the first external electrode is inclined with respect to the first direction and the outer edge of the second conductor opposite the second external electrode is inclined with respect to the first direction further reduces the increase in distance between the first and second conductors and the coil in areas where stray capacitance is likely to occur. Therefore, this configuration more reliably suppresses an increase in stray capacitance between the coil and the first conductor that occurs due to the arrangement of the first conductor, and more reliably suppresses an increase in stray capacitance between the coil and the second conductor that occurs due to the arrangement of the second conductor.

[0010] In the first aspect, the area of the portion of the first external electrode connected to the first conductor may be equal to or less than half the area of the first external electrode, and the area of the portion of the second external electrode connected to the second conductor may be equal to or less than half the area of the second external electrode. Increasing the volume of the first and second conductors tends to increase the stray capacitance formed between the coil and the first and second external electrodes. A configuration in which the area of the portions connected to the first and second conductors is equal to or less than half the area of the external electrodes further reduces the increase in the distance between the first and second conductors and the coil. Therefore, this configuration more reliably suppresses the increase in stray capacitance formed between the coil and the first conductor due to the arrangement of the first conductor, and more reliably suppresses the increase in stray capacitance formed between the coil and the second conductor due to the arrangement of the second conductor.

[0011] In the first aspect, the element body may include a connecting conductor that is arranged in a third direction intersecting the first and second directions and that connects the coil and the first external electrode, and each of the first and second conductors may include a plurality of conductors, and each of the plurality of first wiring portions may be spaced apart from the plurality of conductors in the first direction as it is spaced apart from the connecting conductor in the third direction. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which each of the multiple first wiring portions becomes farther away from the multiple conductors in the first direction as it becomes farther away from the connecting conductor in the third direction further reduces the increase in distance between the multiple conductors and the coil in areas where stray capacitance is likely to occur. Therefore, this configuration more reliably suppresses an increase in stray capacitance between the coil and the first conductor, which is formed as a result of the arrangement of the first conductor, and more reliably suppresses an increase in stray capacitance between the coil and the second conductor, which is formed as a result of the arrangement of the second conductor.

[0012] In the first aspect, the element body may include a connecting conductor arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction intersecting the first and second directions, and connecting the coil and the first external electrode. Each of the plurality of first wiring portions may be closer to the second main surface as it is spaced apart from the connecting conductor in the third direction. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. The configuration in which each of the plurality of first wiring portions is closer to the second principal surface as it becomes farther away from the connecting conductor in the third direction further reduces the increase in distance between the plurality of conductors and the coil in areas where stray capacitance is more likely to occur. Therefore, this configuration more reliably suppresses an increase in stray capacitance between the coil and the first conductor that occurs due to the arrangement of the first conductor, and more reliably suppresses an increase in stray capacitance between the coil and the second conductor that occurs due to the arrangement of the second conductor.

[0013] In the first aspect, the element body may include a connecting conductor arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction intersecting the first and second directions, and connecting the coil and the first external electrode. The height of each of the plurality of conductors in the first direction may decrease as the distance between each of the plurality of conductors and the connecting conductor in the third direction increases. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which the heights of the multiple conductors in the first direction are lower as each of the multiple conductors becomes farther away from the connecting conductor in the third direction further reduces the increase in distance between the multiple conductors and the coil in areas where stray capacitance is likely to occur. Therefore, this configuration more reliably suppresses an increase in stray capacitance between the coil and the first conductor that occurs due to the placement of the first conductor, and more reliably suppresses an increase in stray capacitance between the coil and the second conductor that occurs due to the placement of the second conductor.

[0014] A coil component according to a second aspect of the present invention comprises an element body including first and second main surfaces facing each other in a first direction, first and second external electrodes spaced apart from each other and disposed on the first main surface in a second direction intersecting the first direction, a coil disposed within the element body and electrically connected to the first and second external electrodes, a plurality of first conductors connected to the first external electrode and disposed inside the element body relative to the first external electrode, a plurality of second conductors connected to the second external electrode and disposed inside the element body relative to the second external electrode, and a connecting conductor disposed within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction intersecting the first and second directions and connecting the coil to the first external electrode. The coil includes a plurality of first wiring portions and a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface. Each of the plurality of first wiring portions is spaced apart from the plurality of first and second conductors in the first direction as it moves away from the connecting conductor in the third direction.

[0015] In the second aspect, the first conductor, which is located inside the element body relative to the first external electrode, prevents the first external electrode from peeling off from the element body, and the second conductor, which is located inside the element body relative to the second external electrode, prevents the second external electrode from peeling off from the element body. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which each of the multiple first wiring portions becomes farther away from the multiple conductors in the first direction as it becomes farther away from the connecting conductor in the third direction reduces an increase in the distance between the multiple first and second conductors and the coil in areas where stray capacitance is likely to occur. Therefore, the second aspect suppresses an increase in stray capacitance between the coil and the first conductor, which is formed by the arrangement of the multiple first conductors, and suppresses an increase in stray capacitance between the coil and the second conductor, which is formed by the arrangement of the multiple second conductors.

[0016] In the second aspect, each of the plurality of first wiring portions may be closer to the second main surface as it is farther away from the connection conductor in the third direction. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which each of the multiple first wiring portions is closer to the second principal surface as it becomes farther away from the connecting conductor in the third direction further reduces the increase in distance between the multiple first and second conductors and the coil in areas where stray capacitance is more likely to occur. Therefore, this configuration reliably suppresses an increase in stray capacitance between the coil and the first conductors that occurs due to the arrangement of the multiple first conductors, and reliably suppresses an increase in stray capacitance between the coil and the second conductors that occurs due to the arrangement of the multiple second conductors.

[0017] In the second aspect, the height of each of the plurality of first conductors in the first direction may decrease with increasing distance from the connecting conductor in the third direction, and the height of each of the plurality of second conductors in the first direction may decrease with increasing distance from the connecting conductor in the third direction. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which each of the multiple first conductors has a lower height in the first direction as it becomes farther away from the connecting conductor in the third direction further reduces the increase in distance between the multiple first conductors and the coil in areas where stray capacitance is likely to occur. A configuration in which each of the multiple second conductors has a lower height in the first direction as it becomes farther away from the connecting conductor in the third direction further reduces the increase in distance between the multiple second conductors and the coil in areas where stray capacitance is likely to occur. Therefore, this configuration more reliably suppresses the increase in stray capacitance between the coil and the first conductor that occurs due to the arrangement of the multiple first conductors, and more reliably suppresses the increase in stray capacitance between the coil and the second conductor that occurs due to the arrangement of the multiple second conductors.

[0018] In the second aspect, the area of the portion of the first external electrode connected to the plurality of first conductors may be equal to or less than half the area of the first external electrode, and the area of the portion of the second external electrode connected to the plurality of second conductors may be equal to or less than half the area of the second external electrode. An increase in the volume of the multiple first and second conductors tends to increase the stray capacitance formed between the coil and the first and second external electrodes. A configuration in which the area of the portion connected to the multiple first and second conductors is equal to or less than half the area of the external electrodes suppresses an increase in the volume of the multiple first and second conductors. Therefore, this configuration more reliably suppresses an increase in stray capacitance formed between the coil and the first conductors due to the arrangement of the multiple first conductors, and more reliably suppresses an increase in stray capacitance formed between the coil and the second conductors due to the arrangement of the multiple second conductors.

[0019] In the second aspect, outer edges of the plurality of first conductors opposite to the first external electrode may be inclined with respect to the first direction. Outer edges of the plurality of second conductors opposite to the second external electrode may be inclined with respect to the first direction. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which the outer edges of the multiple first conductors opposite the first external electrode are inclined with respect to the first direction and the outer edges of the multiple second conductors opposite the second external electrode are inclined with respect to the first direction further reduces the increase in distance between the multiple first and second conductors and the coil in areas where stray capacitance is likely to occur. Therefore, this configuration more reliably suppresses an increase in stray capacitance between the coil and the first conductors that occurs due to the arrangement of the multiple first conductors, and more reliably suppresses an increase in stray capacitance between the coil and the second conductors that occurs due to the arrangement of the multiple second conductors.

[0020] In the second aspect, the first and second external electrodes may be plate-shaped. The plate-like configuration of the first and second external electrodes further prevents the first and second external electrodes from peeling off from the element body.

[0021] A coil component according to a third aspect of the present invention comprises an element body including first and second main surfaces facing each other in a first direction, first and second external electrodes spaced apart from each other and disposed on the first main surface in a second direction intersecting the first direction, a coil disposed within the element body and electrically connected to the first and second external electrodes, a first conductor connected to the first external electrode and disposed inside the element body relative to the first external electrode, a second conductor connected to the second external electrode and disposed inside the element body relative to the second external electrode, a first connecting conductor disposed within the element body and connecting the coil to the first external electrode, and a second connecting conductor disposed within the element body and connecting the coil to the second external electrode. The coil includes a plurality of first wiring portions and a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface. The first and second connecting conductors are located at a first diagonal to each other when viewed from the first direction, and the first and second conductors are located at a second diagonal to each other when viewed from the first direction.

[0022] In the third aspect, the first and second connection conductors are located at a first diagonal angle when viewed from the first direction. The first and second conductors are located at a second diagonal angle when viewed from the first direction, which is different from the first diagonal angle. Therefore, the first conductor, which is located more inward from the element body than the first external electrode, prevents the first external electrode from peeling off from the element body. The second conductor, which is located more inward from the element body than the second external electrode, prevents the second external electrode from peeling off from the element body. The third aspect reduces an increase in the distance between the first and second conductors and the coil, thereby suppressing an increase in stray capacitance between the coil and the first conductor, which is formed as a result of the placement of the first conductor, and suppressing an increase in stray capacitance between the coil and the second conductor, which is formed as a result of the placement of the second conductor.

[0023] In the third aspect, the plurality of first wiring portions include first wiring portions that face the first and second conductors in the first direction and first wiring portions that are spaced apart from the first and second conductors when viewed from the first direction, and the facing first wiring portions may be closer to the second main surface than the spaced apart first wiring portions. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which each of the multiple first wiring portions becomes farther away from the first and second conductors in the first direction as it becomes farther away from the connecting conductor in the third direction further reduces the increase in distance between the first and second conductors and the coil in areas where stray capacitance is likely to occur. Therefore, this configuration reliably suppresses an increase in stray capacitance between the coil and the first conductor that occurs due to the arrangement of the first conductor, and reliably suppresses an increase in stray capacitance between the coil and the second conductor that occurs due to the arrangement of the second conductor.

[0024] In the third aspect, an outer edge of the first conductor opposite to the first external electrode may be inclined with respect to the first direction. An outer edge of the second conductor opposite to the second external electrode may be inclined with respect to the first direction. As the first and second conductors become farther away from the connecting conductor in the third direction, the potential difference within the coil becomes larger, making it more likely that stray capacitance will occur. A configuration in which the outer edge of the first conductor opposite the first external electrode is inclined with respect to the first direction and the outer edge of the second conductor opposite the second external electrode is inclined with respect to the first direction further reduces the increase in distance between the first and second conductors and the coil in areas where stray capacitance is likely to occur. Therefore, this configuration more reliably suppresses an increase in stray capacitance between the coil and the first conductor that occurs due to the arrangement of the first conductor, and more reliably suppresses an increase in stray capacitance between the coil and the second conductor that occurs due to the arrangement of the second conductor.

[0025] In the third aspect, at least one of the first and second conductors may be arranged along a corresponding one of the plurality of first wiring portions when viewed from the first direction. In a configuration in which at least one of the first and second conductors is aligned with a corresponding first wiring portion among the plurality of first wiring portions when viewed from the first direction, at least one of the first and second conductors is not too close to the first wiring portion, and therefore, this configuration more reliably suppresses an increase in stray capacitance between the first conductor and the coil formed by the arrangement of the first conductor, and more reliably suppresses an increase in stray capacitance between the second conductor and the coil formed by the arrangement of the second conductor.

[0026] In the third aspect, the area of the portion of the first external electrode connected to the first conductor may be equal to or less than half the area of the first external electrode, and the area of the portion of the second external electrode connected to the second conductor may be equal to or less than half the area of the second external electrode. Increasing the volume of the first and second conductors tends to increase the stray capacitance formed between the coil and the first and second external electrodes. A configuration in which the area of the portions connected to the first and second conductors is equal to or less than half the area of the external electrodes further reduces the increase in the distance between the first and second conductors and the coil. Therefore, this configuration more reliably suppresses the increase in stray capacitance between the coil and the first conductor that occurs due to the arrangement of the first conductor, and more reliably suppresses the increase in stray capacitance between the coil and the second conductor that occurs due to the arrangement of the second conductor. [Effects of the Invention]

[0027] Each of the first to third aspects of the present invention provides a coil component that suppresses peeling of the external electrodes from the element body and also suppresses an increase in stray capacitance formed between the coil and the external electrodes. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 1 is a perspective view showing a coil component according to a first embodiment. [Figure 2] FIG. 2 is a diagram showing a cross-sectional configuration of the coil component according to the first embodiment. [Figure 3] FIG. 3 is a diagram showing a cross-sectional configuration of the coil component according to the first embodiment. [Figure 4] FIG. 4 is a diagram showing a cross-sectional configuration of the coil component according to the first embodiment. [Figure 5] FIG. 5 is a diagram showing a cross-sectional configuration of the coil component according to the first embodiment. [Figure 6] FIG. 6 is a diagram showing a cross-sectional configuration of a coil component according to a first modified example of the first embodiment. [Figure 7] FIG. 7 is a diagram showing a cross-sectional configuration of a coil component according to a first modified example of the first embodiment. [Figure 8] FIG. 8 is a diagram showing a cross-sectional configuration of a coil component according to a second modified example of the first embodiment. [Figure 9] FIG. 9 is a diagram showing a cross-sectional configuration of a coil component according to a second modified example of the first embodiment. [Figure 10] FIG. 10 is a diagram showing a cross-sectional configuration of a coil component according to a second modified example of the first embodiment. [Figure 11] FIG. 11 is a diagram showing a cross-sectional configuration of a coil component according to a third modified example of the first embodiment. [Figure 12] FIG. 12 is a diagram showing a cross-sectional configuration of a coil component according to a third modified example of the first embodiment. [Figure 13] FIG. 13 is a diagram showing a cross-sectional configuration of a coil component according to a fourth modified example of the first embodiment. [Figure 14] FIG. 14 is a diagram showing a cross-sectional configuration of a coil component according to a fourth modified example of the first embodiment. [Figure 15] FIG. 15 is a diagram showing a cross-sectional configuration of a coil component according to a fifth modified example of the first embodiment. [Figure 16] FIG. 16 is a diagram showing a cross-sectional configuration of a coil component according to a fifth modified example of the first embodiment. [Figure 17] FIG. 17 is a diagram showing a cross-sectional configuration of a coil component according to a sixth modified example of the first embodiment. [Figure 18] FIG. 18 is a diagram showing a cross-sectional configuration of a coil component according to a sixth modified example of the first embodiment. [Figure 19] FIG. 19 is a diagram showing a cross-sectional configuration of a coil component according to the second embodiment. [Figure 20] FIG. 20 is a diagram showing a cross-sectional configuration of a coil component according to the second embodiment. [Figure 21] FIG. 21 is a diagram showing a cross-sectional configuration of a coil component according to a first modified example of the second embodiment. [Figure 22] FIG. 22 is a diagram showing a cross-sectional configuration of a coil component according to a first modified example of the second embodiment. [Figure 23] FIG. 23 is a diagram showing a cross-sectional configuration of a coil component according to the third embodiment. [Figure 24] FIG. 24 is a diagram showing a cross-sectional configuration of a coil component according to the third embodiment. [Figure 25] FIG. 25 is a diagram showing a cross-sectional configuration of a coil component according to the third embodiment. [Figure 26] FIG. 26 is a diagram showing a cross-sectional configuration of a coil component according to the third embodiment. [Figure 27] FIG. 27 is a diagram showing a cross-sectional configuration of a coil component according to a first modified example of the third embodiment. [Figure 28] FIG. 28 is a diagram showing a cross-sectional configuration of a coil component according to a first modified example of the third embodiment. [Figure 29] FIG. 29 is a diagram showing a cross-sectional configuration of a coil component according to a second modified example of the third embodiment. [Figure 30] FIG. 30 is a diagram showing a cross-sectional configuration of a coil component according to a second modified example of the third embodiment. [Figure 31] FIG. 31 is a diagram showing a cross-sectional configuration of a coil component according to a third modified example of the third embodiment. [Figure 32] FIG. 32 is a diagram showing a cross-sectional configuration of a coil component according to a third modified example of the third embodiment. [Figure 33] FIG. 33 is a diagram showing a cross-sectional configuration of a coil component according to a third modified example of the third embodiment. [Figure 34] FIG. 34 is a diagram showing a cross-sectional configuration of a coil component according to a third modified example of the third embodiment. [Figure 35] FIG. 35 is a diagram showing a cross-sectional configuration of a coil component according to a fourth modified example of the third embodiment. [Figure 36] FIG. 36 is a diagram showing a cross-sectional configuration of a coil component according to a fourth modified example of the third embodiment. [Figure 37] FIG. 37 is a diagram showing a cross-sectional configuration of a coil component according to a fifth modified example of the third embodiment. [Figure 38] FIG. 38 is a diagram showing a cross-sectional configuration of a coil component according to a fifth modified example of the third embodiment. [Figure 39] FIG. 39 is a diagram showing a cross-sectional configuration of a coil component according to a fifth modified example of the third embodiment. [Figure 40] FIG. 40 is a diagram showing a cross-sectional configuration of a coil component according to a fifth modified example of the third embodiment. [Figure 41] FIG. 41 is a diagram showing a cross-sectional configuration of a coil component according to a sixth modified example of the third embodiment. [Figure 42] FIG. 42 is a diagram showing a cross-sectional configuration of a coil component according to a sixth modified example of the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same elements or elements having the same functions will be denoted by the same reference numerals, and redundant description will be omitted.

[0030] (First embodiment) The configuration of the coil component ED1 according to this embodiment will be described with reference to Fig. 1 to Fig. 5. Fig. 1 is a perspective view showing the coil component according to this embodiment. Figs. 2, 3, 4, and 5 are views showing cross-sectional configurations of the coil component according to this embodiment. In Fig. 2, hatching indicating cross sections is omitted.

[0031] 1 to 5, the coil component ED1 includes an element body 1, external electrodes 10 and 20, and a coil 30. The external electrodes 10 and 20 are disposed on the element body 1. The coil 30 is disposed within the element body 1 and is electrically connected to the external electrodes 10 and 20.

[0032] The element body 1 has, for example, a rectangular parallelepiped shape. In this specification, the rectangular parallelepiped shape includes a rectangular parallelepiped shape with chamfered corners and ridges, and a rectangular parallelepiped shape with rounded corners and ridges. The element body 1 includes a pair of opposing main surfaces 1a, 1b, and a pair of side surfaces 1c, 1d and a pair of side surfaces 1e, 1f connecting the pair of main surfaces 1a, 1b. In this embodiment, the surface of the element body 1 includes the pair of main surfaces 1a, 1b and four side surfaces 1c, 1d, 1e, and 1f.

[0033] The pair of main surfaces 1a, 1b face each other in the first direction D1. The main surface 1a is perpendicular to the first direction D1. The pair of side surfaces 1c, 1d face each other in the second direction D2. The pair of side surfaces 1e, 1f face each other in the third direction D3. The four side surfaces 1c, 1d, 1e, 1f extend in the first direction D1 so as to connect the pair of main surfaces 1a, 1b. The side surfaces 1c, 1e are adjacent to each other. The side surfaces 1d, 1f are adjacent to each other.

[0034] The length of the element body 1 in the first direction D1 is, for example, 0.18 to 0.22 mm. The length of the element body 1 in the second direction D2 is, for example, 0.38 to 0.42 mm. The length of the element body 1 in the second direction D2 may be, for example, 0.23 to 0.27 mm. The length of the element body 1 in the third direction D3 is, for example, 0.18 to 0.22 mm. The length of the element body 1 in the third direction D3 may be, for example, 0.11 to 0.14 mm. In the element body 1, the second direction D2 is, for example, the long side direction. The second direction D2 intersects the first direction D1. The third direction D3 intersects the first direction D1 and the second direction D2. In this embodiment, the first direction D1, the second direction D2, and the third direction D3 are perpendicular to one another. For example, when the main surface 1a includes the first main surface, the main surface 1b includes the second main surface.

[0035] In this embodiment, the principal surface 1a constitutes a mounting surface. When the coil component ED1 is mounted on another electronic device, such as a circuit board or a laminated electronic component, the principal surface 1a faces the other electronic device. The principal surface 1b may constitute the mounting surface. Each of the pair of principal surfaces 1a, 1b and the four side surfaces 1c, 1d, 1e, and 1f has, for example, a rectangular shape. In this specification, a rectangular shape includes a shape in which each corner is chamfered or a shape in which each corner is rounded.

[0036] The element body 1 includes, for example, a plurality of insulator layers having electrical insulation properties. In this embodiment, the element body 1 includes a plurality of insulator layers stacked in a first direction D1. The plurality of insulator layers are integrated to the extent that the boundaries between them are practically invisible. Each of the plurality of insulator layers has, for example, a rectangular shape when viewed from the first direction D1.

[0037] The insulator layer is made of, for example, a sintered ceramic green sheet containing a ferrite material. The ferrite material includes, for example, a Ni-Cu-Zn ferrite material, a Ni-Cu-Zn-Mg ferrite material, or a Ni-Cu ferrite material. The insulator layer may include an Fe alloy. The insulator layer may include a non-magnetic material. The non-magnetic material includes, for example, a glass ceramic material or a dielectric material. The insulator layer may include a resin material. The resin material may include at least one selected from the group consisting of a liquid crystal polymer, a polyimide resin, a crystalline polystyrene, an epoxy resin, an acrylic resin, a bismaleimide resin, and a fluorine resin. The resin material may include a filler. The filler may include an inorganic filler. The inorganic filler may include silica. The resin material may not include a filler.

[0038] The external electrodes 10 and 20 are arranged on the main surface 1a. The external electrodes 10 and 20 are joined to terminals of another electronic device when the coil component ED1 is mounted. The external electrodes 10 and 20 are arranged spaced apart from each other in the second direction D2. The external electrode 10 is located closer to the side surface 1c than the external electrode 20, and the external electrode 20 is located closer to the side surface 1d than the external electrode 10. When viewed from the first direction D1, the external electrodes 10 and 20 are spaced apart from the four ends of the element body 1. When viewed from the first direction D1, each of the four ends of the element body 1 overlaps with the corresponding side surfaces 1c, 1d, 1e, and 1f. The external electrodes 10 and 20 have, for example, a rectangular parallelepiped shape. For example, when the external electrode 10 includes a first external electrode, the external electrode 20 includes a second external electrode.

[0039] In this embodiment, the external electrodes 10, 20 are plate-shaped, for example, flat. When viewed from the first direction D1, the external electrodes 10, 20 are rectangular. For example, the external electrodes 10, 20 have the same dimensions. In this embodiment, a portion of the external electrodes 10, 20 is embedded in the element body 1, and the other portion of the external electrodes 10, 20 is exposed from the main surface 1 a. In this embodiment, "equivalent" means not only equal but also values including slight differences or manufacturing errors within a preset range. For example, if multiple values are within a range of ±5% of the average value of the multiple values, the multiple values are defined as equivalent.

[0040] The external electrodes 10, 20 include a conductive material. The conductive material includes, for example, Ag, Pd, Cu, or Al. The conductive material includes, for example, an Ag-Pd alloy, an Ag-Cu alloy, an Ag-Au alloy, or an Ag-Pt alloy. The external electrodes 10, 20 include, for example, a Ni plating film, an Sn plating film, a Cu plating film, or an Au plating film. The external electrodes 10, 20 may have a multilayer structure of these plating films, and may include a Ni plating film and an Sn plating film formed on the Ni plating film. The plating film is formed, for example, by electrolytic plating or electroless plating. The regions of the external electrodes 10, 20 exposed from the main surface 1a may be bulged by the plating. The thickness of the external electrodes 10, 20 in the first direction D1 is, for example, 2 to 4 μm.

[0041] The coil 30 includes a plurality of wiring portions 31, a plurality of wiring portions 32, and a plurality of pillar portions 33. The wiring portions 31, 32 and the pillar portion 33 are connected to each other to form the coil 30 having a wound shape. The plurality of pillar portions 33 connect the corresponding wiring portions 31 and 32. The plurality of wiring portions 31 are closer to the main surface 1a than the plurality of wiring portions 32. The plurality of wiring portions 32 are arranged between the plurality of wiring portions 31 and the main surface 1b. The plurality of wiring portions 31, the plurality of wiring portions 32, and the plurality of pillar portions 33 include a conductive material. The conductive material includes, for example, copper. The plurality of wiring portions 31, the plurality of wiring portions 32, and the plurality of pillar portions 33 are not exposed from the main surfaces 1a, 1b and the side surfaces 1c, 1d, 1e, 1f. The coil axis of the coil 30 is along the third direction D3. For example, when the wiring portion 31 includes a first wiring portion, the wiring portion 32 includes a second wiring portion.

[0042] In this embodiment, the multiple wiring portions 31 include three wiring portions 31a, 31b, and 31c, and the multiple wiring portions 32 include four wiring portions 32a, 32b, 32c, and 32d. Of the wiring portions 31a, 31b, and 31c, the wiring portion 31a is closer to the side surface 1e than the wiring portions 31b and 31c. The wiring portion 31b is located between the wiring portions 31a and 31c. The wiring portion 31c is closer to the side surface 1f than the wiring portions 31a and 31b. Of the wiring portions 32a, 32b, 32c, and 32d, the wiring portion 32a is closer to the side surface 1e than the wiring portions 32b, 32c, and 32d. The wiring portions 32a, 32b, 32c, and 32d are arranged in the order of the wiring portions 32a, 32b, 32c, and 32d.

[0043] The wiring portions 31a, 31b, and 31c are aligned in the third direction D3. The wiring portions 31a, 31b, and 31c are arranged substantially parallel to one another. The wiring portions 31a, 31b, and 31c are arranged, for example, such that adjacent wiring portions are spaced substantially equally apart. In this embodiment, the wiring portions 31a, 31b, and 31c extend obliquely with respect to the second direction D2. The wiring portions 31a, 31b, and 31c are inclined at a predetermined angle with respect to the second direction D2 when viewed from the first direction D1. The inclination angles of the wiring portions 31a, 31b, and 31c with respect to the second direction D2 are equal to one another. The wiring portions 32a, 32b, 32c, and 32d are aligned in the third direction D3. The wiring portions 32a, 32b, 32c, and 32d are arranged substantially parallel to one another. The wiring portions 32a, 32b, 32c, and 32d are arranged, for example, such that adjacent wiring portions are spaced substantially equally apart. In this embodiment, the wiring portions 32a, 32b, 32c, and 32d extend in the second direction D2.

[0044] The plurality of pillar portions 33 include a plurality of pillar portions 33 closer to the side surface 1c and a plurality of pillar portions 33 closer to the side surface 1d. The multiple pillar portions 33 near the side surface 1c include three pillar portions 33a, 33b, and 33c. Of the pillar portions 33a, 33b, and 33c, the pillar portion 33a is closer to the side surface 1e than the pillar portions 33b and 33c. The pillar portion 33b is located between the pillar portions 33a and 33c. The pillar portion 33c is closer to the side surface 1f than the pillar portions 33a and 33b. The pillar portions 33a, 33b, and 33c are aligned in the third direction D3 and extend in the first direction D1 so as to be approximately parallel to each other. The pillar portions 33a, 33b, and 33c are arranged, for example, so that adjacent pillar portions are spaced approximately equally apart. The pillar portions 33a, 33b, and 33c connect the end of the wiring portion 31 near the side surface 1c to the end of the wiring portion 32 near the side surface 1c. The multiple pillar portions 33 near the side surface 1d include three pillar portions 33d, 33e, and 33f. Of the pillar portions 33d, 33e, and 33f, the pillar portion 33d is closer to the side surface 1e than the pillar portions 33e and 33f. The pillar portion 33e is located between the pillar portions 33d and 33f. The pillar portion 33f is closer to the side surface 1f than the pillar portions 33d and 33e. The pillar portions 33d, 33e, and 33f are aligned in the third direction D3 and extend in the first direction D1 so as to be approximately parallel to each other. The pillar portions 33d, 33e, and 33f are arranged, for example, so that adjacent pillar portions are spaced approximately equally apart. The pillar portions 33d, 33e, and 33f connect the end portion of the wiring portion 31 near the side surface 1d to the end portion of the wiring portion 32 near the side surface 1d.

[0045] The cross-sectional shape of the wiring portions 31, 32 and the pillar portion 33 in a cross section perpendicular to the first direction D1 is, for example, substantially rectangular. The cross-sectional shape of the wiring portions 31, 32 and the pillar portion 33 in a cross section perpendicular to the first direction D1 may be, for example, circular, elliptical, or a polygonal shape other than a rectangle.

[0046] The coil part ED1 includes a connecting conductor 36 and a connecting conductor 37. The connecting conductor 36 electrically connects one end of the coil 30 to the external electrode 10. The connecting conductor 36 is arranged in the element body 1 so as to be aligned with the wiring portions 31a, 31b, and 31c in the third direction D3. The connecting conductor 36 is arranged near the side surface 1c and the side surface 1e. The connecting conductor 37 electrically connects the other end of the coil 30 to the external electrode 20. The connecting conductor 37 is arranged in the element body 1 so as to be aligned with the wiring portions 32f, 31e, and 31d in the third direction D3. The connecting conductor 37 is arranged near the side surface 1d and the side surface 1f.

[0047] The connecting conductor 36 connects the external electrode 10 to one end of the wiring portion 32a. The pillar portion 33d connects the other end of the wiring portion 32a to one end of the wiring portion 31a. The pillar portion 33a connects the other end of the wiring portion 31a to one end of the wiring portion 32b. The pillar portion 33e connects the other end of the wiring portion 32b to one end of the wiring portion 31b. The pillar portion 33b connects the other end of the wiring portion 31b to one end of the wiring portion 32c. The pillar portion 33f connects the other end of the wiring portion 32c to one end of the wiring portion 31c. The pillar portion 33c connects the other end of the wiring portion 31c to one end of the wiring portion 32d. The connecting conductor 37 connects the other end of the wiring portion 32d to the external electrode 20.

[0048] The coil part ED1 includes conductors 11 and 21. The conductor 11 is connected to the external electrode 10 and is disposed inside the element body 1 with respect to the external electrode 10. When viewed from the first direction D1, the conductor 11 is located between two adjacent wiring portions 31b and 31c of the multiple wiring portions 31. When viewed from the first direction D1, the conductor 11 does not overlap with the multiple wiring portions 31. When viewed from the first direction D1, the conductor 11 does not face the multiple wiring portions 31 in the first direction D1. When viewed from the first direction D1, each of the wiring portions 31b and 31c extends obliquely with respect to the second direction D2, and the conductor 11 extends along the wiring portions 31b and 31c. The conductor 11 has a height that is lower than the height of the wiring portion 31 from the main surface 1a in the first direction D1. When viewed from the second direction D2 and the third direction D3, the conductor 11 does not overlap with the wiring portion 31. The conductor 11 has, for example, a rectangular parallelepiped shape. The area of the region of the external electrode 10 that is connected to the conductor 11 is half or less of the area of the external electrode 10. The area of the region that is connected to the conductor 11 is half or less of the area of the entire external electrode 10. The conductor 21 is connected to the external electrode 20 and is disposed inside the element body 1 relative to the external electrode 20. When viewed from the first direction D1, the conductor 21 is located between two adjacent wiring portions 31a, 31b of the multiple wiring portions 31. When viewed from the first direction D1, the conductor 21 does not overlap with the multiple wiring portions 31. When viewed from the first direction D1, the conductor 21 does not face the multiple wiring portions 31 in the first direction D1. When viewed from the first direction D1, each of the wiring portions 31a, 31b extends obliquely with respect to the second direction D2, and the conductor 21 extends along the wiring portions 31a, 31b. The conductor 21 has a height that is lower than the height of the wiring portion 31 from the main surface 1a in the first direction D1. When viewed from the second direction D2 and the third direction D3, the conductor 21 does not overlap with the wiring portion 31. The conductor 21 has, for example, a rectangular parallelepiped shape. The area of the region of the external electrode 20 that is connected to the conductor 21 is half or less of the area of the external electrode 20. The area of the region that is connected to the conductor 21 is half or less of the area of the entire external electrode 20. For example, if conductor 11 comprises a first conductor, conductor 21 comprises a second conductor.

[0049] 4 to 12, a coil component ED1 according to each modified example of the first embodiment will be described. The coil component ED1 according to each modified example includes wiring portions 31a, 31b, and 31c, wiring portions 32a, 32b, 32c, and 32d, pillar portions 33a, 33b, and 33c, and connecting conductors 36 and 37. Each modified example includes portions that differ from the first embodiment with respect to at least one of the lengths in the first direction D1 and the third direction D3 of the wiring portions 31a, 31b, and 31c, wiring portions 32a, 32b, 32c, and 32d, pillar portions 33a, 33b, and 33c, and connecting conductors 36 and 37. The coil component ED1 according to each modified example includes conductors 11 and 21. Each modified example includes portions that differ from the first embodiment with respect to at least one of the number of conductors 11 and 21 and their lengths in the first direction D1 and the third direction D3. The following describes each of the modified examples, focusing mainly on the differences from the coil component ED1 according to the first embodiment. The configuration of the coil component ED1 according to each modified example is similar to or equivalent to the configuration of the coil component ED1 according to the first embodiment, except where otherwise noted.

[0050] 6 and 7 are diagrams showing the cross-sectional configuration of a coil device according to a first modified example of the first embodiment. In the first modified example, the wiring portions 31 and 32, the pillar portion 33, and the connecting conductors 36 and 37 each have a width greater than the width in the third direction D3 of the first embodiment. The conductors 11 and 21 each have a width greater than the width in the third direction D3 of the first embodiment.

[0051] The conductor 11 includes a region that faces at least one of the two adjacent wiring portions 31b, 31c in the first direction D1. In the first modified example, the conductor 11 faces the two wiring portions 31b, 31c in the first direction D1. The conductor 21 includes a region that faces at least one of the two adjacent wiring portions 31a, 31b in the first direction D1. In the first modified example, the conductor 11 faces the two wiring portions 31a, 31b in the first direction D1. The conductors 11 and 21 have a height that is lower than the height of the wiring portion 31 in the first direction D1 from the main surface 1a. The conductors 11 and 21 have, for example, a rectangular parallelepiped shape. The area of the region of the external electrode 10 that is connected to the conductor 11 is half or less of the area of the external electrode 10. The area of the region of the external electrode 20 that is connected to the conductor 21 is half or less of the area of the external electrode 20. In the first modified example, the wiring portions 31 and 32, the pillar portion 33, and the connecting conductors 36 and 37 may each have a width smaller than the width in the third direction D3 of the first embodiment. The conductors 11 and 21 may each have a width smaller than the width in the third direction D3 of the first embodiment.

[0052] 8, 9, and 10 are diagrams showing the cross-sectional configuration of a coil device according to a second modified example of the first embodiment. In the second modified example, the coil device ED1 includes a plurality of conductors 11 and 21. For example, the plurality of conductors 11 includes two conductors 11a and 11b, and the plurality of conductors 21 includes two conductors 21a and 21b. The conductor 11a is closer to the side surface 1e than the conductor 11b, and the conductor 21a is closer to the side surface 1e than the conductor 21b. Hatching indicating a cross section has been omitted in FIG. 8.

[0053] The conductors 11a and 11b are connected to the external electrode 10 and are arranged inside the element body 1 with respect to the external electrode 10. When viewed from the first direction D1, the conductor 11a is located between two adjacent wiring portions 31a and 31b of the multiple wiring portions 31. When viewed from the first direction D1, the conductor 11b is located between two adjacent wiring portions 31b and 31c of the multiple wiring portions 31. When viewed from the first direction D1, the conductor 11 does not overlap with the multiple wiring portions 31. The conductors 11a and 11b do not face the multiple wiring portions 31 in the first direction D1. The conductor 11a extends along the wiring portions 31a and 31b, and the conductor 11b extends along the wiring portions 31b and 31c. The conductors 11a and 11b have a height that is lower than the height of the wiring portion 31 in the first direction D1 from the main surface 1a. The conductors 11a and 11b have, for example, a rectangular parallelepiped shape. The area of the region of the external electrode 10 that is connected to the conductors 11a and 11b is half or less of the area of the external electrode 10.

[0054] The conductors 21a and 21b are connected to the external electrode 20 and are arranged inside the element body 1 with respect to the external electrode 20. When viewed from the first direction D1, the conductor 21a is located between two adjacent wiring portions 31a and 31b of the multiple wiring portions 31. When viewed from the first direction D1, the conductor 21b is located between two adjacent wiring portions 31b and 31c of the multiple wiring portions 31. When viewed from the first direction D1, the conductor 21 does not overlap with the multiple wiring portions 31. The conductors 21a and 21b do not face the multiple wiring portions 31 in the first direction D1. The conductor 21a extends along the wiring portions 31a and 31b, and the conductor 21b extends along the wiring portions 31b and 31c. The conductors 21a and 21b have a height that is lower than the height of the wiring portion 31 in the first direction D1 from the main surface 1a. The conductors 21a and 21b have, for example, a rectangular parallelepiped shape. The area of the region of the external electrode 20 that is connected to the conductors 21a and 21b is half or less of the area of the external electrode 20.

[0055] 11 and 12 are diagrams showing the cross-sectional configuration of a coil device according to a third modified example of the first embodiment. In the third modified example, the coil device ED1 includes multiple conductors 11 and 21. For example, the multiple conductors 11 include two conductors 11a and 11b, and the multiple conductors 21 include two conductors 21a and 21b. The conductor 11a is closer to the side surface 1e than the conductor 11b, and the conductor 21a is closer to the side surface 1e than the conductor 21b. In the third modified example, the wiring portions 31 and 32, the pillar portion 33, and the connecting conductors 36 and 37 each have a width greater than the width in the third direction D3 of the first embodiment. The conductors 11 and 21 each have a width greater than the width in the third direction D3 of the first embodiment.

[0056] The conductors 11a and 11b are located between the wiring portions 31 when viewed from the first direction D1, and include regions that face at least one of two adjacent wiring portions 31 in the first direction D1. In the third modified example, the conductor 11a faces the two wiring portions 31a and 31b in the first direction D1. The conductor 11b faces the two wiring portions 31b and 31c in the first direction D1. The conductors 21a and 21b are located between the wiring portions 31 when viewed from the first direction D1, and include regions that face at least one of two adjacent wiring portions 31 in the first direction D1. In the third modified example, the conductor 21a faces the two wiring portions 31a and 31b in the first direction D1. The conductor 21b faces the two wiring portions 31b and 31c in the first direction D1. The conductors 11a, 11b and conductors 21a, 21b have heights in the first direction D1 that are smaller than the height from the main surface 1a of the wiring portion 31. The conductors 11a, 11b and conductors 21a, 21b have the same heights in the first direction D1. The conductors 11a, 11b and the conductors 21a, 21b have, for example, a rectangular parallelepiped shape. The area of the region of the external electrode 10 that is connected to the conductors 11a, 11b is half or less of the area of the external electrode 10. The area of the region of the external electrode 20 that is connected to the conductors 21a, 21b is half or less of the area of the external electrode 20.

[0057] 13 and 14 are diagrams showing a cross-sectional configuration of a coil device according to a fourth modified example of the first embodiment. The fourth modified example has the same configuration as the third modified example, except for the configurations of the conductors 11a, 11b and 21a, 21b. In the fourth modified example, the conductor 11b of the wiring portion 31 has a height that is shorter than the height of the conductor 11a in the first direction D1. Each of the multiple wiring portions 31a, 31b, and 31c becomes more spaced apart in the first direction D1 from the multiple conductors 21a and 21b as it approaches the connecting conductor 37 in the third direction D3. Therefore, in the fourth modified example, the conductor 21b has a height that is shorter than the height of the conductor 21a in the first direction D1. The conductor 21b has a height that is shorter than the height of the conductor 21a in the first direction D1.

[0058] 15 and 16 are diagrams illustrating a cross-sectional configuration of a coil device according to a fifth modified example of the first embodiment. The fifth modified example has the same configuration as the third modified example, except for the heights of the wiring portions 31 a, 31 b, and 31 c in the first direction D1 from the main surface 1 a. Each of the plurality of wiring portions 31a, 31b, and 31c is spaced further away from the plurality of conductors 11a and 11b in the first direction D1 as it moves away from the connecting conductor 36 in the third direction D3. Therefore, in the fifth modified example, each of the wiring portions 31a, 31b, and 31c is closer to each of the plurality of wiring portions 32a, 32b, 32c, and 32d in the first direction D1 as it moves away from the connecting conductor 36 in the third direction D3. Each of the wiring portions 31a, 31b, and 31c is spaced further away from the connecting conductor 36 in the third direction D3 as it moves away from the main surface 1a in the first direction D1. Each of the plurality of wiring portions 31a, 31b, and 31c is spaced apart in the first direction D1 from the plurality of conductors 21a and 21b as it approaches the connecting conductor 37 in the third direction D3. Each of the wiring portions 31a, 31b, and 31c is spaced apart in the first direction D1 from the main surface 1a as it approaches the connecting conductor 37 in the third direction D3.

[0059] 17 and 18 are diagrams showing the cross-sectional configuration of a coil component according to a sixth modified example of the first embodiment. The sixth modified example has the same configuration as the first embodiment except for the configurations of the conductors 11 and 21. An outer edge 11p of the conductor 11 on the opposite side to the external electrode 10 is inclined with respect to the first direction D1. The height of the outer edge 11p in the first direction D1 decreases as it moves away from the connecting conductor 36 in the third direction D3. An outer edge 21p of the conductor 21 on the opposite side to the external electrode 20 is inclined with respect to the first direction D1. The height of the outer edge 21p in the first direction D1 decreases as it approaches the connecting conductor 37 in the third direction D3.

[0060] Second Embodiment The configuration of a coil component ED2 according to the second embodiment will be described with reference to Fig. 19 and Fig. 20. Fig. 19 and Fig. 20 are diagrams showing the cross-sectional configuration of the coil component according to the second embodiment. The coil component ED2 according to the second embodiment has a configuration equivalent to that of the first modified example of the first embodiment, except for the configurations of the conductors 11 and 21. In the second embodiment, the conductor 11a faces the wiring portion 31b in the first direction D1. When viewed from the first direction D1, the conductor 11a entirely overlaps the wiring portion 31b. The conductor 11b faces the wiring portion 31c in the first direction D1. When viewed from the first direction D1, the conductor 11b entirely overlaps the wiring portion 31c. The conductor 11b has a height that is lower than the height of the conductor 11a in the first direction D1. The conductor 21b has a height that is lower than the height of the conductor 21a in the first direction D1. In the second embodiment, similarly to the first embodiment, the height of the outer edge 11p in the first direction D1 decreases as it moves away from the connecting conductor 36 in the third direction D3. The height of the outer edge 21p in the first direction D1 decreases as it approaches the connecting conductor 37 in the third direction D3.

[0061] 21 and 22 are diagrams showing a cross-sectional configuration of a coil device according to a first modified example of the second embodiment. The first modified example has the same configuration as the second embodiment except for the heights of the wiring portions 31 a, 31 b, and 31 c in the first direction D1 from the main surface 1 a.

[0062] In the first modified example, the conductor 11a faces the wiring portion 31b in the first direction D1. When viewed from the first direction D1, the conductor 11a entirely overlaps the wiring portion 31b. The conductor 11b faces the wiring portion 31c in the first direction D1. When viewed from the first direction D1, the conductor 11b entirely overlaps the wiring portion 31c. The conductor 11b has a height equivalent to that of the conductor 11a in the first direction D1. The conductor 21b has a height equivalent to that of the conductor 21a in the first direction D1.

[0063] Each of the plurality of wiring portions 31a, 31b, and 31c is spaced apart from the plurality of conductors 11a and 11b in the first direction D1 as it moves away from the connecting conductor 36 in the third direction D3. Therefore, in the first modified example, each of the wiring portions 31a, 31b, and 31c is closer to each of the plurality of wiring portions 32a, 32b, 32c, and 32d in the first direction D1 as it moves away from the connecting conductor 36 in the third direction D3. Each of the wiring portions 31a, 31b, and 31c is spaced apart in the first direction D1 from the main surface 1a as it moves away from the connecting conductor 36 in the third direction D3. The conductor 21a faces the wiring portion 31a in the first direction D1. When viewed from the first direction D1, the entire conductor 21a overlaps with the wiring portion 31a. The conductor 21b faces the wiring portion 31b in the first direction D1. When viewed from the first direction D1, the entire conductor 21b overlaps with the wiring portion 31b. The conductor 21b has a height equivalent to that of the conductor 11a in the first direction D1. The conductor 21b has a height equivalent to that of the conductor 21a in the first direction D1.

[0064] Each of the plurality of wiring portions 31a, 31b, and 31c is spaced apart from the plurality of conductors 11a and 11b in the first direction D1 as it moves away from the connecting conductor 36 in the third direction D3. Therefore, in the first modified example, each of the wiring portions 31a, 31b, and 31c is closer to each of the plurality of wiring portions 32a, 32b, 32c, and 32d in the first direction D1 as it moves away from the connecting conductor 36 in the third direction D3. Each of the wiring portions 31a, 31b, and 31c is spaced apart in the first direction D1 from the main surface 1a as it moves away from the connecting conductor 36 in the third direction D3. The second embodiment may have the same configuration as the fourth and fifth modified examples of the first embodiment.

[0065] (Third embodiment) The configuration of a coil device ED3 according to the third embodiment will be described with reference to Fig. 23, Fig. 24, Fig. 25, and Fig. 26. Fig. 23 to Fig. 26 are diagrams showing the cross-sectional configuration of the coil device according to the third embodiment. In Fig. 23, hatching indicating a cross section is omitted. The coil device ED3 according to the third embodiment includes wiring portions 31a, 31b, and 31c, wiring portions 32a, 32b, 32c, and 32d, pillar portions 33a, 33b, and 33c, and connecting conductors 36 and 37. In the coil device ED3, the wiring portions 31a, 31b, and 31c, the wiring portions 32a, 32b, 32c, and 32d, the pillar portions 33a, 33b, and 33c, and the connecting conductors 36 and 37 each have a width greater than the width of the coil device ED1 in the third direction D3. The conductors 11 and 21 each have a width greater than the width of the conductors 11 and 21 in the third direction D3 of the first embodiment. The following describes the third embodiment, focusing on differences from the coil component ED1 according to the first embodiment. The configuration of the coil component ED3 is similar to or equivalent to the configuration of the coil component ED1, except where otherwise noted.

[0066] The connecting conductor 36 electrically connects one end of the coil 30 to the external electrode 10. The connecting conductor 36 is arranged within the element body 1 so as to be aligned with the wiring portions 31a, 31b, and 31c in the third direction D3. The connecting conductor 36 is arranged near the corner formed by the side surface 1d and the side surface 1e. The connecting conductor 37 electrically connects the other end of the coil 30 and the external electrode 20. The connecting conductor 37 is arranged within the element body 1 so as to be aligned with the wiring portions 32f, 31e, and 31d in the third direction D3. The connecting conductor 37 is arranged near the corner formed by the side surface 1c and the side surface 1f. The corner formed by the side surface 1d and the side surface 1e and the corner formed by the side surface 1c and the side surface 1f form a first diagonal with each other. For example, if the connecting conductor 36 includes a first connecting conductor, the connecting conductor 37 includes a second connecting conductor.

[0067] Conductor 11 is disposed near the corner formed by side surface 1c and side surface 1f. Conductor 21 is disposed near the corner formed by side surface 1d and side surface 1e. When viewed from first direction D1, conductors 11 and 21 are located at a second diagonal that is different from the diagonal. The second diagonal intersects with the first diagonal. The conductor 11 faces the wiring portion 31c in the first direction D1. When viewed from the first direction D1, the entire conductor 11 overlaps with the wiring portion 31c. The conductor 11 has a height that is lower than the height of the wiring portion 31 from the main surface 1a in the first direction D1. When viewed from the second direction D2 and the third direction D3, the conductor 11 does not overlap with the wiring portion 31. The conductor 11 has, for example, a rectangular parallelepiped shape. The area of the region of the external electrode 10 that is connected to the conductor 11 is half or less of the area of the external electrode 10. The conductor 21 faces the wiring portion 31a in the first direction D1. When viewed from the first direction D1, the entire conductor 11 overlaps with the wiring portion 31a. The conductor 21 has a height that is lower than the height of the wiring portion 31 from the main surface 1a in the first direction D1. When viewed from the second direction D2 and the third direction D3, the conductor 21 does not overlap with the wiring portion 31. The conductor 21 has, for example, a rectangular parallelepiped shape. The area of the region of the external electrode 20 that is connected to the conductor 21 is half or less of the area of the external electrode 20. The conductor 21 has a height equivalent to the height of the conductor 11 in the first direction D1.

[0068] 27 and 28 are diagrams showing a cross-sectional configuration of a coil component according to a first modified example of the third embodiment. The first modified example has the same configuration as the third embodiment except for the heights of the wiring portion 31c and the wiring portions 31a and 31c from the main surface 1a in the first direction D1. The wiring portion 31c has a height that is lower than the heights of the wiring portions 31a and 31c from the main surface 1a in the first direction D1. The conductors 11 and 21 may include an area that does not overlap with the wiring portion 31 when viewed from the first direction D1.

[0069] 29 and 30 are diagrams showing the cross-sectional configuration of a coil component according to a second modified example of the third embodiment. The second modified example has the same configuration as the third embodiment except for the configurations of the conductors 11 and 21. An outer edge 11p of the conductor 11 on the opposite side to the external electrode 10 is inclined with respect to the first direction D1. The height of the outer edge 11p in the first direction D1 decreases as it moves away from the connecting conductor 36 in the third direction D3. An outer edge 21p of the conductor 21 on the opposite side to the external electrode 20 is inclined with respect to the first direction D1. The height of the outer edge 21p in the first direction D1 decreases as it approaches the connecting conductor 37 in the third direction D3.

[0070] 31, 32, 33, and 34 are diagrams showing a cross-sectional configuration of a coil device according to a third modified example of the third embodiment. The third modified example has the same configuration as the third embodiment except for the configurations of the conductors 11 and 21. Hatching indicating a cross section is omitted in Fig. 31. When viewed from the first direction D1, the conductor 11 is located closer to the side surface 1f than the wiring portion 31c. The conductor 11 extends in the second direction D2. The conductor 11 does not face the wiring portion 31 in the first direction D1. When viewed from the first direction D1, the conductor 21 is located closer to the side surface 1e than the wiring portion 31a. The conductor 21 extends in the second direction D2. The conductor 21 does not face the wiring portion 31 in the first direction D1. The conductors 11 and 21 have, for example, a rectangular parallelepiped shape. When viewed from the third direction D3, the conductor 11 overlaps with the wiring portion 31c, and the conductor 21 overlaps with the wiring portion 31a.

[0071] 35 and 36 are diagrams showing a cross-sectional configuration of a coil device according to a fourth modified example of embodiment 3. The fourth modified example has the same configuration as embodiment 3 except for the configurations of conductors 11 and 21. When viewed from the first direction D1, the conductor 11 is located closer to the side surface 1f than the wiring portion 31c. The conductor 11 extends in the second direction D2. The conductor 11 does not face the wiring portion 31 in the first direction D1. When viewed from the second direction D2, the conductor 11 has, for example, a triangular shape. An outer edge 11p of the conductor 11 opposite the external electrode 10 is inclined with respect to the first direction D1. The height of the outer edge 11p in the first direction D1 decreases as it approaches the wiring portion 31c. When viewed from the third direction D3, the conductor 11 overlaps with the wiring portion 31c in the first direction D1. When viewed from the first direction D1, the conductor 21 is located closer to the side surface 1e than the wiring portion 31a. The conductor 21 extends in the second direction D2. The conductor 21 does not face the wiring portion 31 in the first direction D1. When viewed from the second direction D2, the conductor 21 has, for example, a triangular shape. An outer edge 21p of the conductor 21 opposite the external electrode 20 is inclined with respect to the first direction D1. The height of the outer edge 21p in the first direction D1 decreases as it approaches the wiring portion 31a. When viewed from the third direction D3, the conductor 21 overlaps with the wiring portion 31c in the first direction D1.

[0072] 37, 38, 39, and 40 are diagrams showing a cross-sectional configuration of a coil device according to a fifth modified example of the third embodiment. The fifth modified example has the same configuration as the third embodiment except for the configurations of the conductors 11 and 21. Hatching indicating a cross section is omitted in Fig. 37. When viewed from the first direction D1, the conductor 11 is located closer to the side surface 1f than the wiring portion 31c. The conductor 11 extends in the second direction D2. When viewed from the first direction D1, the conductor 11 has, for example, a triangular shape. The conductor 11 has, for example, a shape that follows the outer shape of the wiring portion 31c. The conductor 11 does not face the wiring portion 31 in the first direction D1. When viewed from the first direction D1, the conductor 21 is located closer to the side surface 1e than the wiring portion 31a. The conductor 21 extends in the second direction D2. When viewed from the first direction D1, the conductor 21 has, for example, a triangular shape. The conductor 21 has, for example, a shape that follows the outer shape of the wiring portion 31a. The conductor 21 does not face the wiring portion 31 in the first direction D1.

[0073] 41 and 42 are diagrams showing a cross-sectional configuration of a coil device according to a sixth modified example of embodiment 3. The sixth modified example has the same configuration as embodiment 3 except for the configurations of conductors 11 and 21. When viewed from the first direction D1, the conductor 11 is located closer to the side surface 1f than the wiring portion 31c. The conductor 11 extends in the second direction D2. When viewed from the first direction D1, the conductor 11 has, for example, a triangular shape. The conductor 11 has, for example, a shape that follows the outer shape of the wiring portion 31c. The conductor 11 does not face the wiring portion 31 in the first direction D1. When viewed from the first direction D1, the conductor 11 is located closer to the side surface 1f than the wiring portion 31c. The conductor 11 extends in the second direction D2. The conductor 11 does not face the wiring portion 31 in the first direction D1. When viewed from the second direction D2, the conductor 11 has, for example, a triangular shape. The height of the conductor 11 in the first direction D1 decreases as it approaches the wiring portion 31c. An outer edge 11p of the conductor 11 opposite the external electrode 10 is inclined with respect to the first direction D1. The height of the outer edge 11p in the first direction D1 decreases as it moves away from the connecting conductor 36 in the third direction D3. When viewed from the third direction D3, the conductor 11 overlaps with the wiring portion 31c. When viewed from the first direction D1, the conductor 21 is located closer to the side surface 1e than the wiring portion 31a. The conductor 21 extends in the second direction D2. When viewed from the first direction D1, the conductor 21 has, for example, a triangular shape. The conductor 21 has, for example, a shape that follows the outer shape of the wiring portion 31a. The conductor 21 does not face the wiring portion 31 in the first direction D1. When viewed from the first direction D1, the conductor 21 is located closer to the side surface 1e than the wiring portion 31a. The conductor 21 extends in the second direction D2. The conductor 21 does not face the wiring portion 31 in the first direction D1. When viewed from the second direction D2, the conductor 21 has, for example, a triangular shape. The height of the conductor 21 in the first direction D1 decreases as it approaches the wiring portion 31a. An outer edge 21p of the conductor 21 opposite the external electrode 20 is inclined with respect to the first direction D1. The height of the outer edge 21p in the first direction D1 decreases as it approaches the connecting conductor 37 in the third direction D3. When viewed from the third direction D3, the conductor 21 overlaps with the wiring portion 31a.

[0074] As described above, in the coil component ED1, the conductor 11, which is arranged inside the element body 1 relative to the external electrode 10, is connected to the external electrode 10. A configuration including the conductor 11 connected to the external electrode 10 increases the connection area between the element body 1 and the portion consisting of the external electrode 10 and conductor 11, which are connected to each other, compared to a configuration not including the conductor 11 connected to the external electrode 10. The coil component ED1 increases the connection strength between the element body 1 and the portion consisting of the external electrode 10 and conductor 11, which are connected to each other. In the coil component ED1, a conductor 21, which is arranged inside the element body 1 relative to the external electrode 20, is connected to the external electrode 20. A configuration including the conductor 21 connected to the external electrode 20 increases the connection area between the element body 1 and the portion consisting of the external electrode 20 and conductor 21, which are connected to each other, compared to a configuration not including the conductor 21 connected to the external electrode 20. The coil component ED1 increases the connection strength between the element body 1 and the portion consisting of the external electrode 20 and conductor 21, which are connected to each other. Therefore, the coil component ED1 reliably prevents the external electrodes 10, 20 from peeling off from the element body 1. In the coil component ED1, the conductor 11 is spaced apart from the coil 30 by an amount corresponding to the distance between the conductor 11 and the coil 30, as viewed from the first direction D1. The coil component ED1 suppresses an increase in stray capacitance between the conductor 11 and the coil 30, which is formed as a result of the arrangement of the conductor 11. The conductor 21 is spaced apart from the coil 30 by an amount corresponding to the distance between the conductor 21 and the coil 30, which is formed as a result of the arrangement of the conductor 21. The coil component ED1 suppresses an increase in stray capacitance between the conductor 21 and the coil 30, which is formed as a result of the arrangement of the conductor 21.

[0075] In the coil device ED1, the conductor 11 includes a region facing in the first direction D1 at least one of the two adjacent wiring portions 31. The conductor 21 includes a region facing in the first direction D1 at least one of the two adjacent wiring portions 31. The coil component ED1 increases the proportion of the conductors 11 and 21 within the element body 1. Therefore, the coil component ED1 reliably prevents the external electrodes 10, 20 from peeling off from the element body 1.

[0076] In the coil component ED1, the area of the conductor 11 located between the two wiring portions 31 is larger than the area of the opposing region, and the area of the conductor 21 located between the two wiring portions 31 is larger than the area of the opposing region. The coil component ED1 reduces an increase in the distance between the conductors 11, 21 and the coil 30. Therefore, the coil component ED1 reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11, which is formed as a result of the arrangement of the conductor 11, and reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21, which is formed as a result of the arrangement of the conductor 21.

[0077] In the coil component ED1, the outer edge of the conductor 11 opposite the external electrode 10 is inclined with respect to the first direction D1. The outer edge of the conductor 21 opposite the external electrode 20 is inclined with respect to the first direction D1. As the conductors 11, 21 move away from the connecting conductor 36 in the third direction D3, the potential difference within the coil 30 increases, making it more likely that stray capacitance will occur. The coil component ED1 further reduces the increase in the distance between the conductors 11, 21 and the coil 30 in the region where stray capacitance is likely to occur. Therefore, this configuration more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11 that occurs as a result of the arrangement of the conductor 11, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21 that occurs as a result of the arrangement of the conductor 21.

[0078] In the coil component ED1, the area of the portion of the external electrode 10 that is connected to the conductor 11 is equal to or less than half the area of the external electrode 10. The area of the portion of the external electrode 20 that is connected to the conductor 21 is equal to or less than half the area of the external electrode 20. An increase in the volume of the conductors 11, 21 tends to increase the stray capacitance formed between the coil 30 and the external electrodes 10, 20. The coil component ED1 suppresses the increase in the volume of the conductors 11, 21. Therefore, the coil component ED1 more reliably suppresses an increase in the stray capacitance formed between the coil 30 and the conductor 11 due to the arrangement of the conductor 11, and more reliably suppresses an increase in the stray capacitance formed between the coil 30 and the conductor 21 due to the arrangement of the conductor 21.

[0079] The coil component ED1 is arranged in the element body 1 so as to be aligned with the plurality of wiring portions 31, 32 in the third direction D3, and includes a connecting conductor 36 that connects the coil 30 and the external electrode 10. Each of the conductors 11, 21 includes a plurality of conductors, and each of the plurality of wiring portions 31 is spaced apart from the plurality of conductors 11, 21 in the first direction D1 as it becomes spaced apart from the connecting conductor 36 in the third direction D3. The coil component ED1 further reduces the increase in distance between the coil 30 and the plurality of conductors 11, 21 in an area where stray capacitance is likely to occur. Therefore, the coil component ED1 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11 that occurs as a result of the arrangement of the conductor 11, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21 that occurs as a result of the arrangement of the conductor 21.

[0080] In the coil device ED1, each of the plurality of wiring portions 31 is closer to the main surface 1b as it is farther away from the connecting conductor 36 in the third direction D3. The coil component ED1 further reduces the increase in distance between the coil 30 and the plurality of conductors 11, 21 in an area where stray capacitance is likely to occur. Therefore, the coil component ED1 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11 that occurs as a result of the arrangement of the conductor 11, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21 that occurs as a result of the arrangement of the conductor 21.

[0081] In the coil component ED1, the height of the plurality of conductors 11, 21 in the first direction decreases as each of the plurality of conductors 11, 21 is spaced further away from the connecting conductor 36 in the third direction D3. The coil component ED1 further reduces the increase in distance between the coil 30 and the plurality of conductors 11, 21 in an area where stray capacitance is likely to occur. Therefore, the coil component ED1 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11 that occurs as a result of the arrangement of the conductor 11, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21 that occurs as a result of the arrangement of the conductor 21.

[0082] In coil component ED2, conductor 11, which is arranged inside element body 1 relative to external electrode 10, prevents external electrode 10 from peeling off from element body 1. Conductor 21, which is arranged inside element body 1 relative to external electrode 20, prevents external electrode 20 from peeling off from element body 1. The coil component ED2 further reduces the increase in distance between the coil 30 and the multiple conductors 11a, 11b, 21a, and 21b in areas where stray capacitance is likely to occur. Therefore, the coil component ED2 suppresses an increase in stray capacitance between the coil 30 and the conductor 11a due to the arrangement of the conductor 11a, and suppresses an increase in stray capacitance between the coil 30 and the conductor 11b due to the arrangement of the conductor 11b. The coil component ED2 suppresses an increase in stray capacitance between the coil 30 and the conductor 21a due to the arrangement of the conductor 21a, and suppresses an increase in stray capacitance between the coil 30 and the conductor 21b due to the arrangement of the conductor 21b.

[0083] In the coil device ED2, each of the plurality of wiring portions 31 is closer to the main surface 1b as it is farther away from the connecting conductor in the third direction D3. As the conductors 11a, 11b, 21a, and 21b move away from the connecting conductor 36 in the third direction D3, the potential difference within the coil 30 increases, making it more likely that stray capacitance will occur. The coil component ED2 further reduces the increase in the distance between the coil 30 and the multiple conductors 11a, 11b, 21a, and 21b in the region where stray capacitance is likely to occur. Therefore, the coil component ED1 reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11a due to the arrangement of the conductor 11a, and reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11b due to the arrangement of the conductor 11b. The coil component ED2 reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21a due to the arrangement of the conductor 21a, and reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21b due to the arrangement of the conductor 21b.

[0084] In the coil device ED2, the height of each of the plurality of conductors 11a, 11b in the first direction D1 decreases as the distance from the connecting conductor 36 increases in the third direction D3. The height of each of the plurality of conductors 21a, 21b in the first direction D1 decreases as the distance from the connecting conductor 36 increases in the third direction D3. The coil component ED2 further reduces an increase in the distance between the coil 30 and the plurality of conductors 11a, 11b in an area where stray capacitance is likely to occur, and further reduces an increase in the distance between the coil 30 and the plurality of conductors 21a, 21b. Therefore, the coil component ED2 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11a due to the arrangement of the conductor 11a, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11b due to the arrangement of the conductor 11b. The coil component ED2 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21a due to the arrangement of the conductor 21a, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21b due to the arrangement of the conductor 21b.

[0085] In the coil component ED2, the area of the portion of the external electrode 10 that is connected to the plurality of conductors 11a and 11b is equal to or less than half the area of the external electrode 10. The area of the portion of the external electrode 20 that is connected to the plurality of conductors 21a and 21b is equal to or less than half the area of the external electrode 20. The coil component ED2 suppresses an increase in the volume of the multiple conductors 11a, 11b, 21a, and 21b. Therefore, it more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11a due to the arrangement of the conductor 11a, and it more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11b due to the arrangement of the conductor 11b. The coil component ED2 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21a due to the arrangement of the conductor 21a, and it more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21b due to the arrangement of the conductor 21b.

[0086] In the coil component ED2, the outer edges of the conductors 11a and 11b opposite the external electrode 10 are inclined with respect to the first direction D1. The outer edges of the conductors 21a and 21b opposite the external electrode 20 are inclined with respect to the first direction D1. The coil component ED2 further reduces the increase in distance between the coil 30 and the multiple conductors 11a, 11b, 21a, and 21b in areas where stray capacitance is likely to occur. Therefore, the coil component ED2 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11a due to the arrangement of the conductor 11a, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11b due to the arrangement of the conductor 11b. The coil component ED2 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21a due to the arrangement of the conductor 21a, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21b due to the arrangement of the conductor 21b.

[0087] In the coil part ED2, the external electrodes 10 and 20 are plate-shaped. The coil component ED2 further prevents the external electrodes 10, 20 from peeling off from the element body 1.

[0088] In the coil component ED3, the connecting conductors 36 and 37 are located at a first diagonal angle when viewed from the first direction D1. The conductors 11 and 21 are located at a second diagonal angle different from the first diagonal angle when viewed from the first direction D1. The conductor 11, which is located more inward from the element body 1 than the external electrode 10, prevents the external electrode 10 from peeling off from the element body 1. The conductor 21, which is located more inward from the element body 1 than the external electrode 20, prevents the external electrode 20 from peeling off from the element body 1. The coil component ED3 reduces an increase in the distance between the conductors 11, 21 and the coil 30. Therefore, the coil component ED3 suppresses an increase in the stray capacitance between the coil 30 and the conductor 11 that occurs as a result of the arrangement of the conductor 11, and suppresses an increase in the stray capacitance between the coil 30 and the conductor 21 that occurs as a result of the arrangement of the conductor 21.

[0089] In the coil part ED3, the multiple wiring portions 31 include wiring portions 31 that face the conductors 11 and 21 in the first direction D1, and wiring portions 31 that are separated from the conductors 11a, 11b, 21a, and 21b when viewed from the first direction D1, and the above-mentioned facing wiring portions 31 are closer to the multiple wiring portions 32 in the first direction D1 than the above-mentioned separated wiring portions 31. The coil component ED3 further reduces the increase in the distance between the conductors 11, 21 and the coil 30 in the region where stray capacitance is likely to occur. Therefore, the coil component ED3 reliably suppresses the increase in stray capacitance between the coil 30 and the conductor 11 that occurs as a result of the arrangement of the conductor 11, and reliably suppresses the increase in stray capacitance between the coil 30 and the conductor 21 that occurs as a result of the arrangement of the conductor 21.

[0090] In the coil component ED3, the outer edge of the conductor 11 opposite the external electrode 10 is inclined with respect to the first direction D1. The outer edge of the conductor 21 opposite the external electrode 20 is inclined with respect to the first direction D1. The coil component ED3 further reduces the increase in the distance between the coil 30 and the plurality of conductors 11, 21 in the region where stray capacitance is likely to occur. Therefore, the coil component ED3 more reliably suppresses the increase in stray capacitance between the coil 30 and the conductor 11 that occurs as a result of the arrangement of the conductor 11, and more reliably suppresses the increase in stray capacitance between the coil 30 and the conductor 21 that occurs as a result of the arrangement of the conductor 21.

[0091] In the coil device ED3, at least one of the conductors 11 and 21 is aligned along a corresponding one of the plurality of wiring portions 31 when viewed from the first direction D1. In the coil component ED3, at least one of the conductors 11 and 21 is not too close to the wiring portion 31. Therefore, the coil component ED3 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11 that occurs due to the arrangement of the conductor 11, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21 that occurs due to the arrangement of the conductor 21.

[0092] In the coil component ED3, the area of the portion of the external electrode 10 that is connected to the conductor 11 is equal to or less than half the area of the external electrode 10. The area of the portion of the external electrode 20 that is connected to the conductor 21 is equal to or less than half the area of the external electrode 20. The coil component ED3 suppresses an increase in the volume of the plurality of conductors 11, 21. Therefore, the coil component ED3 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11, which is formed as a result of the arrangement of the conductor 11, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21, which is formed as a result of the arrangement of the conductor 21.

[0093] The above describes embodiments and modifications of the present invention, but the present invention is not necessarily limited to the above-described embodiments and modifications, and various modifications are possible without departing from the spirit of the present invention. In the coil component ED1, the area of the conductor 11 located between two wiring portions 31 does not need to be larger than the area of the opposing region. The area of the conductor 21 located between two wiring portions 31 does not need to be larger than the area of the opposing region. A configuration in which the area of the conductor 11 located between two wiring portions 31 is larger than the area of the opposing region and the area of the conductor 21 located between two wiring portions 31 is larger than the area of the opposing region reduces an increase in the distance between the conductors 11, 21 and the coil 30, as described above. Therefore, the coil component ED1 reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11, which is formed due to the arrangement of the conductor 11, and reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21, which is formed due to the arrangement of the conductor 21. The area of the portion of the external electrode 10 that is connected to the conductor 11 does not have to be half or less of the area of the external electrode 10. The area of the portion of the external electrode 20 that is connected to the conductor 21 does not have to be half or less of the area of the external electrode 20. A configuration in which the area of the portion of the external electrode 10 that is connected to the conductor 11 is half or less of the area of the external electrode 10 and the area of the portion of the external electrode 20 that is connected to the conductor 21 is half or less of the area of the external electrode 20 suppresses an increase in the volume of the conductors 11, 21, as described above. Therefore, the coil device ED1 more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 11 that is formed due to the arrangement of the conductor 11, and more reliably suppresses an increase in stray capacitance between the coil 30 and the conductor 21 that is formed due to the arrangement of the conductor 21.

[0094] As can be understood from the above description of the embodiments and modifications, the present specification includes disclosure of the following aspects. (Appendix 1) an element body including a first main surface and a second main surface facing each other in a first direction; a first external electrode and a second external electrode disposed on the first main surface and spaced apart from each other in a second direction intersecting the first direction; a coil disposed within the element body and electrically connected to the first and second external electrodes; a first conductor connected to the first external electrode and disposed on the element body more inward than the first external electrode; a second conductor connected to the second external electrode and disposed closer to the element body than the second external electrode; Equipped with The coil is A plurality of first wiring portions; a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface, the first conductor is located between two adjacent first wiring portions among the plurality of first wiring portions when viewed from the first direction, The second conductor is located between two adjacent first wiring portions among the plurality of first wiring portions when viewed from the first direction. (Appendix 2) the first conductor further includes a region facing at least one of the two adjacent first wiring portions in the first direction, 2. The coil component according to claim 1, wherein the second conductor further includes a region that faces at least one of the two adjacent first wiring portions in the first direction. (Appendix 3) an area of the first conductor located between the two first wiring portions is larger than an area of the opposing region; 3. The coil component according to claim 2, wherein the area of the second conductor located between the two first wiring portions is larger than the area of the opposing region. (Appendix 4) an outer edge of the first conductor opposite to the first external electrode is inclined with respect to the first direction; 4. The coil component according to claim 1, wherein an outer edge of the second conductor opposite to the second external electrode is inclined with respect to the first direction. (Appendix 5) an area of a portion of the first external electrode connected to the first conductor is equal to or less than half of an area of the first external electrode; 5. The coil component according to claim 1, wherein the area of the portion of the second external electrode that is connected to the second conductor is equal to or less than half the area of the second external electrode. (Appendix 6) a connecting conductor that is arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction that intersects the first and second directions, and that connects the coil and the first external electrode, each of the first and second conductors includes a plurality of conductors; 6. The coil component according to claim 1, wherein each of the plurality of first wiring portions is spaced further away from the plurality of conductors in the first direction as it moves further away from the connecting conductor in the third direction. (Appendix 7) a connecting conductor that is arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction that intersects the first and second directions, and that connects the coil and the first external electrode, 7. The coil component according to claim 1, wherein each of the plurality of first wiring portions is closer to the second main surface as it is farther away from the connection conductor in the third direction. (Appendix 8) a connecting conductor that is arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction that intersects the first and second directions, and that connects the coil and the first external electrode, each of the first and second conductors includes a plurality of conductors; 8. The coil component according to claim 1, wherein the height of each of the plurality of conductors in the first direction decreases as the distance between each of the plurality of conductors and the connecting conductor increases in the third direction. (Appendix 9) an element body including a first main surface and a second main surface facing each other in a first direction; a first external electrode and a second external electrode disposed on the first main surface and spaced apart from each other in a second direction intersecting the first direction; a coil disposed within the element body and electrically connected to the first and second external electrodes; a plurality of first conductors connected to the first external electrode and disposed on the element body more inward than the first external electrode; a plurality of second conductors connected to the second external electrode and disposed on the element body further inward than the second external electrode; a connecting conductor that is arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction that intersects the first and second directions, and that connects the coil and the first external electrode; Equipped with The coil is A plurality of first wiring portions; a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface, a coil component in which each of the plurality of first wiring portions is spaced apart in the first direction from the plurality of first and second conductors as it becomes spaced apart from the connecting conductor in the third direction; (Appendix 10) 10. The coil component according to claim 9, wherein each of the plurality of first wiring portions is closer to the second main surface as it is farther away from the connection conductor in the third direction. (Appendix 11) each of the plurality of first conductors has a height in the first direction that decreases as the first conductors are spaced apart from the connecting conductor in the third direction; 11. The coil component according to claim 9, wherein the height of each of the plurality of second conductors in the first direction decreases as the second conductors become farther away from the connecting conductor in the third direction. (Appendix 12) an area of a portion of the first external electrode connected to the plurality of first conductors is equal to or less than half of an area of the first external electrode; 12. The coil component according to any one of claims 9 to 11, wherein the area of the portion of the second external electrode that is connected to the plurality of second conductors is equal to or less than half the area of the second external electrode. (Appendix 13) outer edges of the first conductors opposite to the first external electrode are inclined with respect to the first direction, 13. The coil component according to any one of appendixes 9 to 12, wherein outer edges of the second conductors opposite to the second external electrode are inclined with respect to the first direction. (Appendix 14) 14. The coil component according to any one of claims 9 to 13, wherein the first and second external electrodes are plate-shaped. (Appendix 15) an element body including a first main surface and a second main surface facing each other in a first direction; a first external electrode and a second external electrode disposed on the first main surface and spaced apart from each other in a second direction intersecting the first direction; a coil disposed within the element body and electrically connected to the first and second external electrodes; a first conductor connected to the first external electrode and disposed on the element body more inward than the first external electrode; a second conductor connected to the second external electrode and disposed closer to the element body than the second external electrode; a first connecting conductor disposed within the element body and connecting the coil and the first external electrode; a second connecting conductor disposed within the element body and connecting the coil and the second external electrode; Equipped with The coil is A plurality of first wiring portions; a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface, the first and second connection conductors are positioned diagonally opposite each other when viewed from the first direction; The coil component, wherein the first and second conductors are located at a second diagonal different from the first diagonal when viewed from the first direction. (Appendix 16) The plurality of first wiring portions are a first wiring portion facing the first and second conductors in the first direction; a first wiring portion that is spaced apart from the first and second conductors when viewed from the first direction; 16. The coil component of claim 15, wherein the opposing first wiring portions are closer to the second main surface in the first direction than the separated first wiring portions. (Appendix 17) an outer edge of the first conductor opposite to the first external electrode is inclined with respect to the first direction; 17. The coil component according to claim 15, wherein an outer edge of the second conductor opposite to the second external electrode is inclined with respect to the first direction. (Appendix 18) A coil component according to any one of appendices 15 to 17, wherein at least one of the first and second conductors is aligned along a corresponding one of the plurality of first wiring portions when viewed from the first direction. (Appendix 19) an area of a portion of the first external electrode connected to the first conductor is equal to or less than half of an area of the first external electrode; 19. The coil component according to any one of appendices 15 to 18, wherein the area of the portion of the second external electrode that is connected to the second conductor is equal to or less than half the area of the second external electrode. [Explanation of symbols]

[0095] 1...element body, 1a, 1b...main surfaces, 10...external electrode, 11...conductor, 20...external electrode, 21...conductor, 30...coil, 31...wiring portion, 32...wiring portion, D1...first direction, D2...second direction, D3...third direction, ED1...coil component.

Claims

1. an element body including a first main surface and a second main surface facing each other in a first direction; a first external electrode and a second external electrode disposed on the first main surface and spaced apart from each other in a second direction intersecting the first direction; a coil disposed within the element body and electrically connected to the first and second external electrodes; a first conductor connected to the first external electrode and disposed on the element body more inward than the first external electrode; a second conductor connected to the second external electrode and disposed closer to the element body than the second external electrode; Equipped with The coil is A plurality of first wiring portions; a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface, the first conductor is located between two adjacent first wiring portions among the plurality of first wiring portions when viewed from the first direction, The second conductor is located between two adjacent first wiring portions among the plurality of first wiring portions when viewed from the first direction.

2. the first conductor further includes a region facing at least one of the two adjacent first wiring portions in the first direction, The coil component according to claim 1 , wherein the second conductor further includes a region facing at least one of the two adjacent first wiring portions in the first direction.

3. an area of the first conductor located between the two first wiring portions is larger than an area of the opposing region; The coil component according to claim 2 , wherein an area of the second conductor located between the two first wiring portions is larger than an area of the opposing region.

4. an outer edge of the first conductor opposite to the first external electrode is inclined with respect to the first direction; The coil component according to any one of claims 1 to 3, wherein an outer edge of the second conductor opposite to the second external electrode is inclined with respect to the first direction.

5. an area of a portion of the first external electrode connected to the first conductor is equal to or less than half of an area of the first external electrode; 4. The coil component according to claim 1, wherein an area of a portion of the second external electrode that is connected to the second conductor is equal to or less than half an area of the second external electrode.

6. a connecting conductor that is arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction that intersects the first and second directions, and that connects the coil and the first external electrode, each of the first and second conductors includes a plurality of conductors; The coil component according to any one of claims 1 to 3, wherein each of the plurality of first wiring portions is spaced apart from the plurality of conductors in the first direction as it becomes spaced apart from the connecting conductor in the third direction.

7. a connecting conductor that is arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction that intersects the first and second directions, and that connects the coil and the first external electrode, The coil component according to any one of claims 1 to 3, wherein each of the plurality of first wiring portions is closer to the second main surface as it moves away from the connection conductor in the third direction.

8. a connecting conductor that is arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction that intersects the first and second directions, and that connects the coil and the first external electrode, each of the first and second conductors includes a plurality of conductors; The coil component according to any one of claims 1 to 3, wherein the height of each of the plurality of conductors in the first direction decreases as the distance of each of the plurality of conductors from the connecting conductor increases in the third direction.

9. an element body including a first main surface and a second main surface facing each other in a first direction; a first external electrode and a second external electrode disposed on the first main surface and spaced apart from each other in a second direction intersecting the first direction; a coil disposed within the element body and electrically connected to the first and second external electrodes; a plurality of first conductors connected to the first external electrode and disposed on the element body more inward than the first external electrode; a plurality of second conductors connected to the second external electrode and disposed on the element body further inward than the second external electrode; a connecting conductor that is arranged within the element body so as to be aligned with the plurality of first and second wiring portions in a third direction that intersects the first and second directions, and that connects the coil and the first external electrode; Equipped with The coil is A plurality of first wiring portions; a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface, a coil component in which each of the plurality of first wiring portions is spaced apart in the first direction from the plurality of first and second conductors as it becomes spaced apart from the connecting conductor in the third direction;

10. The coil component according to claim 9 , wherein each of the plurality of first wiring portions is closer to the second main surface as it is farther away from the connection conductor in the third direction.

11. each of the plurality of first conductors has a height in the first direction that decreases as the first conductors are spaced apart from the connecting conductor in the third direction; The coil component according to claim 9 , wherein the height of each of the plurality of second conductors in the first direction decreases with increasing distance from the connecting conductor in the third direction.

12. an area of a portion of the first external electrode connected to the plurality of first conductors is equal to or less than half of an area of the first external electrode; The coil component according to claim 9 , wherein an area of a portion of the second external electrode that is connected to the plurality of second conductors is equal to or less than half an area of the second external electrode.

13. outer edges of the first conductors opposite to the first external electrode are inclined with respect to the first direction, The coil component according to claim 9 , wherein outer edges of the second conductors opposite to the second external electrode are inclined with respect to the first direction.

14. The coil component according to claim 9 or 10, wherein the first and second external electrodes are plate-shaped.

15. an element body including a first main surface and a second main surface facing each other in a first direction; a first external electrode and a second external electrode disposed on the first main surface and spaced apart from each other in a second direction intersecting the first direction; a coil disposed within the element body and electrically connected to the first and second external electrodes; a first conductor connected to the first external electrode and disposed on the element body more inward than the first external electrode; a second conductor connected to the second external electrode and disposed closer to the element body than the second external electrode; a first connecting conductor disposed within the element body and connecting the coil and the first external electrode; a second connecting conductor disposed within the element body and connecting the coil and the second external electrode; Equipped with The coil is A plurality of first wiring portions; a plurality of second wiring portions disposed between the plurality of first wiring portions and the second main surface, the first and second connection conductors are positioned diagonally opposite each other when viewed from the first direction; The coil component, wherein the first and second conductors are located at a second diagonal different from the first diagonal when viewed from the first direction.

16. The plurality of first wiring portions are a first wiring portion facing the first and second conductors in the first direction; a first wiring portion that is spaced apart from the first and second conductors when viewed from the first direction; The coil component according to claim 15 , wherein the opposing first wiring portions are closer to the second main surface in the first direction than the separated first wiring portions.

17. an outer edge of the first conductor opposite to the first external electrode is inclined with respect to the first direction; The coil component according to claim 15 or 16, wherein an outer edge of the second conductor opposite to the second external electrode is inclined with respect to the first direction.

18. The coil component according to claim 15 or 16, wherein at least one of the first and second conductors is aligned along a corresponding one of the plurality of first wiring portions when viewed from the first direction.

19. an area of a portion of the first external electrode connected to the first conductor is equal to or less than half of an area of the first external electrode; The coil component according to claim 15 or 16, wherein an area of a portion of the second external electrode that is connected to the second conductor is equal to or less than half an area of the second external electrode.

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