公开(公告)号：US20240331929A1

公开(公告)日：2024-10-03

申请号：US18404362

申请日：2024-01-04

Applicant: TDK CORPORATION

Inventor： Keito YASUDA ,  Yusuke Nagai ,  Makoto Yoshino ,  Masaki Takahashi ,  Shinichi Sato ,  Yuya Ishima ,  Shingo Hattori ,  Youhei Iida ,  Mitsuharu Koike ,  Takato Sasaki

IPC: H01F27/29 ,  H01F27/28

CPC classification number: H01F27/292 ,  H01F27/2804 ,  H01F2027/2809

Abstract: A coil component 1 includes an element body having a mounting surface, a coil disposed in the element body, terminal electrodes disposed on the mounting surface of the element body, and a first connection conductor and a second connection conductor connecting the coil and the terminal electrodes, respectively, in which the first connection conductor and the second connection conductor have first portions connected to the terminal electrodes, second portions connected to the coil, and third portions connecting the first portions and the second portions, respectively, and an area of a first pore per unit area in the first portion is larger than an area of a third pore per unit area in the third portion.

公开(公告)号：US20240404740A1

公开(公告)日：2024-12-05

申请号：US18635645

申请日：2024-04-15

Applicant: TDK Corporation

Inventor： Yusuke Nagai ,  Takahiro Sato ,  Hidenobu Umeda ,  Takeshi Shibayama ,  Shinichi Sato ,  Yuya Ishima ,  Youhei Iida ,  Mitsuharu Koike ,  Keito Yasuda ,  Takato Sasaki

IPC: H01F17/00 ,  H01F27/32

Abstract: A multilayer coil component includes an element body that contains a plurality of metal magnetic particles made of a soft magnetic material, and at least two conductors that are in contact with the element body. Surfaces of the plurality of metal magnetic particles are covered by an oxide film having an insulating property, an insulating portion having an insulating property is formed in at least a part of a surface of at least one conductor of the two conductors in the conductor, and a thickness of the insulating portion is larger than a thickness of the oxide film.