Coil component

Abstract

The invention provides a coil component in which a coil conductor is built in a laminated structure, and a higher inductance value and a Q value can be obtained. A central axis of the coil conductor (32) is oriented in parallel with a mounting surface. An external terminal electrode (33) is formed so as to extend from the bottom surface (a second main surface) (24) of a member main body (22) in an L-shape to the middle of an end surface (27). An extended conductor layer (35) connecting the external terminal electrode (33) and the coil conductor (32) is pulled out in a direction toward the upper surface (a first main surface) (23) from the end (37) of the external terminal electrode (33) in a state of forming identical end edges, with the distance larger than the distance extending in a normal line direction (NL) with respect to the outer peripheral edge of a circulating conductor layer (30) of the coil conductor (32) and equal to or smaller than the distance extending in a tangent line direction (TL) with respect to the outer peripheral edge of the circulating conductor layer (30), and connects the coil conductor (32) to the external terminal electrode (33).

Description

technical field [0001] The present invention relates to a coil component, and particularly relates to a coil component having a coil conductor embedded in a laminated structure. Background technique [0002] A coil component useful to the present invention is described in, for example, Japanese Patent No. 4220453 (Patent Document 1). Several examples of coil components called multilayer inductors are described in Patent Document 1, and a representative cross-sectional structure of them is shown in Figure 10 . [0003] refer to Figure 10 , the coil component 1 includes a component body 2 . The component main body 2 is in the shape of a cube, and includes: a first main surface 3 and a second main surface 4 facing each other; Two sides (with Figure 10 , but not shown), and the first end surface 5 and the second end surface 6 opposite to each other. [0004] A first external terminal electrode 7 and a second external terminal electrode 8 are respectively formed in a region...

AI Technical Summary

Problems solved by technology

[0009] exist Figure 10 In the illustrated coil component 1, the first external terminal electrode 7 and the second external terminal electrode 8 exist so as to surround the entire periphery of the connection position of the first lead-out conductor layer 13 and the second lead-out conductor layer 14, respectively. The distance between an external terminal electrode 7 and the second external terminal electrode 8 and the first lead-out conductor layer 13 and the second lead-out conductor layer 14 becomes closer, so due to the interruption of magnetic flux and the generation of stray capacitance, it is easy to cause inductance value, Q value reduction

[0010] In addition, since the first lead-out conductor layer 13 and the second lead-out conductor layer 14 are vertically in contact with the first external terminal electrode 7 and the second external terminal electrode 8, the reflection loss is large, and the Q value tends to deteriorate in this point as well. reduce

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