公开(公告)号：US20220102043A1

公开(公告)日：2022-03-31

申请号：US17486196

申请日：2021-09-27

Applicant: TDK Corporation

Inventor： Hidenori TSUTSUI ,  Kouji KAWAMURA ,  Hiromu SAKAMOTO ,  Kengo OSADA ,  Takuro TSURUTA ,  Takeshi OKUMURA

IPC: H01F17/00 ,  H01F27/29

Abstract: Disclosed herein is a coil component that includes first, second, third, and fourth terminal electrodes; a first planar spiral coil formed on a substrate, the first planar spiral coil having an outer peripheral end connected to the first terminal electrode; a second planar spiral coil stacked on the first planar spiral coil through a first insulating layer, the second planar spiral coil having an outer peripheral end connected to the second terminal electrode; and first and second lead-out patterns stacked on the second planar spiral coil through a second insulating layer. The first lead-out pattern connects the third terminal electrode and an inner peripheral end of the first planar spiral coil. The second lead-out pattern connects the fourth terminal electrode and an inner peripheral end of the second planar spiral coil. The second insulating layer is thicker than the first insulating layer.