公开(公告)号：US20210358683A1

公开(公告)日：2021-11-18

申请号：US17320402

申请日：2021-05-14

Applicant: TDK CORPORATION

Inventor： Kyosuke INUI ,  Makoto MORITA ,  Takashi KUDO ,  Toshiyuki ANBO ,  Kyohei TONOYAMA ,  Fuyuki MIURA ,  Masanori SUGAI ,  Eietsu ABE ,  Toru TONOGAI ,  Yuichi OYANAGI

IPC: H01F27/29 ,  H01F27/28

Abstract: An electronic component according to the present invention includes: a leadout electrode portion provided on an outer surface of an element main body; and a resin electrode layer formed at a part of the outer surface of the element main body and connected to the leadout electrode portion. The leadout electrode portion contains copper as a main component, and the resin electrode layer includes a conductor powder containing silver, and a resin. Further, a diffusion layer containing copper oxide and silver is formed at an interface between the leadout electrode portion and the resin electrode layer.

公开(公告)号：US20180226184A1

公开(公告)日：2018-08-09

申请号：US15886485

申请日：2018-02-01

Applicant: TDK CORPORATION

Inventor： Takashi KUDO ,  Makoto MORITA ,  Fuyuki MIURA ,  Naoki SATOU ,  Kyohei TONOYAMA ,  Yasunori CHIBA ,  Masanori SUGAI ,  Junichi AOYADO

IPC: H01F27/28 ,  H01F27/24 ,  H01F41/04 ,  H01F17/00

CPC classification number: H01F27/28 ,  H01F17/0033 ,  H01F17/04 ,  H01F27/24 ,  H01F41/04 ,  H01F2017/048

Abstract: A coil device includes a conductor and a terminal electrode. The conductor is embedded in a core body and wound in a coil shape. The terminal electrode is formed on an end surface of the core body and connected with a lead end of the conductor. The coil device further includes a dummy conductor embedded in the core body separately from the conductor. An end part of the dummy conductor exposed from the end surface of the core body separately from the lead end is connected with the terminal electrode.