Patent ID: 8451083

Claim:
A coil component comprising: a magnetic substrate made of magnetic ceramic material; a thin-film coil layer containing a coil conductor formed on one principal surface of the magnetic substrate; a plurality of bump electrodes formed on a principal surface of the thin-film coil layer; an insulating resin layer formed on the principal surface of the thin-film coil layer excluding formation positions of the bump electrodes, wherein: the magnetic substrate, the thin-film coil layer and the insulating resin layer form a layered product, each of the bump electrodes has an exposure surface on a bottom surface and on two side surfaces of the layered product, the thin-film coil layer contains a plurality of terminal electrodes of the coil conductor, each of the plurality of terminal electrodes is connected to a corresponding one of the bump electrodes and has an exposure surface on at least one of the two side surfaces of the layered product, a corner of each of the bump electrodes has a notch portion; wherein the insulating resin layer includes: a center resin portion provided at a center of the principal surface of the thin-film coil layer; and a plurality of corner resin portions, and each of the plurality of corner resin portions is provided at the notch portion of each of the bump electrodes at a corner of the principal surface of the thin-film coil layer, and is separated by the each of the bump electrode from the center resin portion.