| 摘要 |
PROBLEM TO BE SOLVED: To provide a coil component which allows for enhancement of inductance while suppressing increase in core loss.SOLUTION: A coil component 1 comprises: a substrate 2; planar spiral conductors 10a, 10b formed, respectively, on the front surface 2t and the back surface 2b of the substrate 2 by electrolytic plating; and a metal magnetic powder-containing resin 22 covering the planar spiral conductors 10a, 10b, respectively. The metal magnetic powder-containing resin 22 contains first metal powder having a first average grain size, second metal powder having a second average grain size smaller than the first average grain size, and third metal powder having a third average grain size smaller than the second average grain size. The first average grain size is 15-100 μm, and the third average grain size is 2 μm or less. The first metal powder is a Permalloy-based material, and the second third metal powders are carbonyl iron. |
