Patent ID: 9349522
Filing Date: 2016-05-24
CPC Classification: H01F

Claim Text:
1. A coil component comprising: a substrate; first and second spiral conductors that are formed on one and the other of main surfaces of the substrate, respectively; a first terminal electrode that is formed on the one main surface and connected to an outer peripheral end of the first spiral conductor; a second terminal electrode that is formed on the other main surface and connected to an outer peripheral end of the second spiral conductor; a first through-hole conductor that penetrates the substrate to connect inner peripheral ends of the first and second spiral conductors each other; a first dummy terminal electrode that is formed on the one main surface and vertically overlapped with the second terminal electrode; a second dummy terminal electrode that is formed on the other main surface and vertically overlapped with the first terminal electrode; a second through-hole conductor that penetrates the substrate to connect the first dummy terminal electrode with the second terminal electrode; a first metal magnetic powder-containing resin layer that is formed on the one main surface and covers the first spiral conductor, the first terminal electrode, and the first dummy terminal electrode; a second metal magnetic powder-containing resin layer that is formed on the other main surface and covers the second spiral conductor, the second terminal electrode, and the second dummy terminal electrode; a first lead electrode that penetrates the first metal magnetic powder-containing resin layer and is connected to a top surface of the first terminal electrode; and a second lead electrode that penetrates the first metal magnetic powder-containing resin layer and is connected to a top surface of the first dummy terminal electrode, wherein outer side surfaces of the first and second terminal electrodes, the first and second dummy terminal electrodes, and the first and second lead electrodes are each exposed without being covered with the first and second metal magnetic powder-containing resin layers, and side surfaces of the substrate lying on the same planes as the outer side surfaces of the first and second terminal electrodes are exposed without being covered with the first and second metal magnetic powder-containing resin layers.