公开(公告)号：US20150097137A1

公开(公告)日：2015-04-09

申请号：US14507216

申请日：2014-10-06

Applicant: TDK CORPORATION

Inventor： Ryuichi WADA ,  Kouichi KAKUDA ,  Hiroki CHOTO ,  Yukari AKITA ,  Yukio TAKAHASHI ,  Masahiro ENDO ,  Takashi SUZUKI ,  Takahiro SATO ,  Akinori OHI

IPC: H01F1/01 ,  H01F27/255 ,  H01F38/14

CPC classification number: H01F1/01 ,  C04B35/26 ,  C04B35/62645 ,  C04B2235/3275 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/77 ,  H01F1/344 ,  H01F3/08 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/255 ,  H01F38/14

Abstract: A ferrite composition comprises a main component and a sub component. The main component is comprised of 25.0 to 49.8 mol % iron oxide in terms of Fe2O3, 5.0 to 14.0 mol % copper oxide in terms of CuO, 0 to 40.0 mol % zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The sub component includes 0.2 to 5.0 wt % silicon oxide in terms of SiO2, 0.10 to 3.00 wt % bismuth oxide in terms of Bi2O3, and 0.10 to 3.00 wt % cobalt oxide in terms of Co3O4, with respect to the main component.

Abstract translation: 铁素体组合物包括主要组分和副组分。 主成分以Fe2O3计，25.0〜49.8摩尔％的氧化铁，以CuO换算为5.0〜14.0摩尔％的氧化铜，换算成氧化锌为0〜40.0摩尔％，还有部分为氧化镍。 副成分相对于主成分，以SiO 2计，氧化铋为0.2〜5.0重量％，氧化铋为0.10〜3.00重量％，Co 3 O 4为0.10〜3.00重量％。

公开(公告)号：US20250157724A1

公开(公告)日：2025-05-15

申请号：US19022371

申请日：2025-01-15

Applicant: TDK CORPORATION

Inventor： Yusuke NAGAI ,  Takashi SUZUKI ,  Kazuhiro EBINA ,  Kunihiko KAWASAKI ,  Shinichi KONDO ,  Keito YASUDA ,  Ryuichi WADA ,  Makoto MORITA ,  Takashi KUDO ,  Kyohei TONOYAMA

IPC: H01F27/29 ,  H01F17/00 ,  H01F17/04

Abstract: In a multilayer coil component, a part filled with a resin and a void part not filled with the resin exist between a plurality of metal magnetic particles in an element body, one main surface of the element body is a mounting surface with respect to an external electronic component, and the edge of an external electrode is positioned on the mounting surface. In the element body, a high void region where the porosity caused by the void part is higher than the porosity of the other part in the element body extends from the edge of the external electrode on the mounting surface toward an end surface of the element body.

公开(公告)号：US20220059264A1

公开(公告)日：2022-02-24

申请号：US17408155

申请日：2021-08-20

Applicant: TDK CORPORATION

Inventor： Ryuichi WADA ,  Takashi SUZUKI ,  Yusuke NAGAI ,  Kaori SASAKI ,  Tatsuro SUZUKI

IPC: H01F1/22

Abstract: A composite magnetic body includes soft magnetic metal particles and non-magnetic ceramic particles each having a particle size (D50) smaller than that of the soft magnetic metal particles.