COIL COMPONENT, CIRCUIT BOARD, AND ELECTRONIC EQUIPMENT

To provide a coil component capable of enhancing a dielectric voltage between a coil conductor and external electrodes.SOLUTION: A coil component comprises: a coil conductor 25 that has a circulation part extending around a coil axis Ax; a base substance 10 that covers at least the circulation part of the coil conductor; an external electrode 21 provided on the base substance so as to be connected with the coil conductor; and an external electrode 22. The base substance has an outer surface (principal surfaces 10a and 10b and lateral faces 10c to 10f) that includes a first surface crossing the coil axis and including a long side and a short side, a second surface opposed to the first surface and separated from the first surface by a distance shorter than the long side, and a connection surface for connecting between the first surface and the second surface. The outer surface of the base substance has: a main body part 11 that includes a plurality of metal magnetic particles, occupying a part of the connection surface; and at least one high-resistance part 12 that occupies a region not occupied by the main body part between the two external electrodes of the connection surface over the whole length in a circumferential direction around the coil axis, having a volume resistivity higher than that of the main body part.SELECTED DRAWING: Figure 1 【課題】コイル導体と外部電極との間での絶縁耐圧を高めることができるコイル部品を提供する。【解決手段】コイル部品は、コイル軸Ａｘの周りに延びる周回部を有するコイル導体２５と、コイル導体のうち少なくとも周回部を覆う基体１０と、基体に設けられコイル導体に接続された外部電極２１、外部電極２２と、を備える。基体は、コイル軸と交わり長辺及び短辺を含む第１面、第１面と対向し長辺よりも短い距離だけ第１面から離間している第２面、及び第１面と第２面とを接続する接続面を含む外表面（主面１０ａ、１０ｂ、側面１０ｃ～１０ｆ）を有する。基体の外表面は、複数の金属磁性粒子を含み接続面の一部を占める本体部１１と、コイル軸の周りの周方向の全長にわたって接続面の２の外部電極との間の本体部によって占められていない領域を占め、本体部よりも高い体積抵抗率を有する少なくとも一つの高抵抗部と１２、を有する。【選択図】図１