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公开(公告)号:US20220139609A1
公开(公告)日:2022-05-05
申请号:US17512790
申请日:2021-10-28
Applicant: TDK CORPORATION
Inventor: Kyosuke INUI , Yuichi OYANAGI , Toru TONOGAI , Toshiyuki ANBO
Abstract: A coil device including: a core containing magnetic particles and a resin component; a coil including a conductor having a coil shape; and a terminal electrode formed on a part of an outer surface of the core and electrically connected to an end of the conductor drawn from the coil. The terminal electrode includes a first electrode layer in contact with the end of the conductor and a second electrode layer located outside the first electrode layer. The first electrode layer and the second electrode layer both include conductive powder and resin, and a content of the resin in the second electrode layer is higher than a content of the resin in the first electrode layer.
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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
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.
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