公开(公告)号：US20220336128A1

公开(公告)日：2022-10-20

申请号：US17760951

申请日：2020-09-25

Applicant: TDK CORPORATION

Inventor： Takashi SUZUKI ,  Yu SAKURAI ,  Hideyuki ITOH ,  Kouichi KAKUDA ,  Ryuichi WADA ,  Nami ENOMOTO ,  Yusuke NAGAI ,  Kunihiko KAWASAKI ,  Shinichi KONDO ,  Yuya ISHIMA

IPC: H01F1/147 ,  C22C30/00 ,  B22F1/05 ,  B22F1/16

Abstract: A soft magnetic metal powder or the like from which a soft magnetic metal fired body can be provided has a high magnetic permeability μ and a specific resistance ρ and is contained in a coil-type electronic component having sufficiently high inductance L and Q value and unlikely to be plating-extended and short-circuited. A soft magnetic metal powder contains soft magnetic metal particles containing at least Fe and Ni. Said soft magnetic metal powder further contains P, Si, Cr and/or M. M is at least one selected from among B, Co, Mn, Ti, Zr, Hf, Nb, Ta, Mo, Mg, Ca, Sr, Ba, Zn, Al, and rare earth elements. The content of each element is within a predetermined range.

公开(公告)号：US20220108835A1

公开(公告)日：2022-04-07

申请号：US17490411

申请日：2021-09-30

Applicant: TDK CORPORATION

Inventor： Yusuke NAGAI ,  Takashi SUZUKI ,  Kazuhiro EBINA ,  Kunihiko KAWASAKI ,  Shinichi KONDO ,  Yuya ISHIMA ,  Shinichi SATO ,  Seiichi NAKAGAWA ,  Keito YASUDA ,  Ryuichi WADA

IPC: H01F27/29 ,  H01F1/28

Abstract: A multilayer coil component includes: an element body containing a plurality of metal magnetic particles; a coil disposed in the element body; and an external electrode disposed on a surface of the element body and electrically connected to the coil. At least a part of a void part between the metal magnetic particles in the element body is filled with a first resin, the external electrode has a resin electrode containing a second resin and a conductor powder dispersed in the second resin, and the second resin connected from the resin electrode extends into the element body.

公开(公告)号：US20150102254A1

公开(公告)日：2015-04-16

申请号：US14508499

申请日：2014-10-07

Applicant: TDK CORPORATION

Inventor： Ryuichi WADA ,  Kouichi KAKUDA ,  Yukari AKITA ,  Yukio TAKAHASHI ,  Yusuke NAGAI ,  Takashi SUZUKI ,  Takahiro SATO

IPC: H01F1/01 ,  H01F27/28

CPC classification number: H01F1/01 ,  C04B35/62625 ,  C04B35/62675 ,  C04B35/62695 ,  C04B35/63416 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/77 ,  H01F1/344 ,  H01F3/08 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/2804 ,  H01F38/14 ,  H01F2027/2809

Abstract: A ferrite composition comprises a main component and a sub component. The main component is comprised of 40.0 to 49.8 mol % iron oxide in terms of Fe2O3, 5.0 to 14.0 mol % copper oxide in terms of CuO, 0 to 32.0 mol % zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The sub component includes 0.5 to 4.0 wt % tin oxide in terms of SnO2, 0.10 to 1.00 wt % bismuth oxide in terms of Bi2O3, and 0.21 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。 主成分由Fe2O3为40.0〜49.8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0〜32.0摩尔％，还有部分为氧化镍。 副成分相对于主成分，以SnO 2计，氧化锡为0.5〜4.0重量％，氧化铋为0.10〜1.00重量％，氧化铋换算为氧化铋为0.21〜3.00重量％。

公开(公告)号：US20180057408A1

公开(公告)日：2018-03-01

申请号：US15678775

申请日：2017-08-16

Applicant: TDK CORPORATION

Inventor： Kouichi KAKUDA ,  Ryuichi WADA ,  Yukio TAKAHASHI ,  Hiroyuki TANOUE ,  Tatsuro SUZUKI ,  Takahiro SATO ,  Takashi SUZUKI

IPC: C04B35/26 ,  H01F1/34 ,  H01F17/00 ,  H01F41/02

CPC classification number: C04B35/265 ,  C01G53/006 ,  C01P2006/40 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/5445 ,  H01F1/344 ,  H01F17/0013 ,  H01F17/04 ,  H01F41/0246

Abstract: A ferrite composition includes a main component and an accessory component. The main component includes 43.0 to 51.0 mol % of iron oxide in terms of Fe2O3, 5.0 to 15.0 mol % of copper oxide in terms of CuO, 1.0 to 24.9 mol % of zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The accessory component includes 0.2 to 3.0 pts. wt. of silicon compound in terms of SiO2, 3.0 to 8.0 pts. wt. of cobalt compound in terms of Co3O4 (excluding 3.0 pts. wt.), and 0.2 to 8.0 pts. wt. of bismuth compound in terms of Bi2O3 with respect to 100 pts. wt. of the main component.

公开(公告)号：US20220336140A1

公开(公告)日：2022-10-20

申请号：US17717673

申请日：2022-04-11

Applicant: TDK CORPORATION

Inventor： Yu SAKURAI ,  Takashi SUZUKI ,  Hideyuki ITOH ,  Kouichi KAKUDA ,  Ryuichi WADA ,  Nami ENOMOTO ,  Yusuke NAGAI ,  Kunihiko KAWASAKI ,  Shinichi KONDO ,  Yuya ISHIMA

IPC: H01F27/28 ,  H01F1/147 ,  H01F1/20

Abstract: A coil-type electronic component comprises an element including a magnetic element body and a coil conductor. A portion of the magnetic element body in between layers of the coil conductor adjacent to each other in an axis direction of the coil conductor includes first soft magnetic metal particles. A portion of the magnetic element body on an outer side along the axis includes second soft magnetic metal particles. The first soft magnetic metal particles have a saturation magnetization (Ms) higher than that of the second soft magnetic metal particles.

公开(公告)号：US20220238265A1

公开(公告)日：2022-07-28

申请号：US17571640

申请日：2022-01-10

Applicant: TDK CORPORATION

Inventor： Shinichi KONDO ,  Takashi INAGAKI ,  Ryuichi WADA ,  Yusuke NAGAI ,  Takashi SUZUKI

IPC: H01F1/147 ,  H01F27/255 ,  H01F41/04 ,  H01F41/02 ,  C22C38/02 ,  C08G59/38 ,  C08K9/02

Abstract: A multilayer coil device includes an element formed by laminating a coil conductor and a magnetic element body. The magnetic element body includes soft magnetic particles and an epoxy resin. The soft magnetic particles include soft magnetic metal particles. The epoxy resin has an epoxy value of 150 or less. The epoxy resin is filled in gap spaces between the soft magnetic particles.

公开(公告)号：US20160300651A1

公开(公告)日：2016-10-13

申请号：US15090196

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Hiroki CHOTO ,  Takeshi SHIBAYAMA ,  Ryuichi WADA ,  Kouichi KAKUDA ,  Yukari AKITA ,  Asuka MURAI ,  Yukio TAKAHASHI ,  Takashi SUZUKI ,  Akinori OHI

IPC: H01F1/34 ,  H01F27/28

CPC classification number: H01F41/0246 ,  C04B35/26 ,  C04B35/2666 ,  C04B35/6261 ,  C04B35/62645 ,  C04B35/62695 ,  C04B2235/3244 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3298 ,  C04B2235/3418 ,  C04B2235/77 ,  C04B2235/94 ,  H01F1/344 ,  H01F27/2804 ,  H01F2027/2809

Abstract: A ferrite composition composed of a main component including 26 to 46 mol % of an iron oxide in terms of Fe2O3, 4 to 14 mol % of a copper oxide in terms of CuO, 0 to 26 mol % of a zinc oxide in terms of ZnO, and a residue of 40.0 mol % or more of a nickel oxide in terms of NiO. The ferrite composition, with respect to 100 parts by weight of the main component, is also composed of a subcomponent including 0.8 to 10.0 parts by weight of a silicon compound in terms of SiO2, 1.0 to 15.0 parts by weight of a cobalt compound in terms of Co3O4, and 0.7 to 30.0 parts by weight of a bismuth compound in terms of Bi2O3. A value of the cobalt compound content in terms of Co3O4 divided by the silicon compound content in terms of SiO2 is 0.4 to 5.5.

Abstract translation: 由以Fe 2 O 3计的氧化铁为26〜46摩尔％，CuO换算为氧化铜为4〜14摩尔％，ZnO为0〜26摩尔％的氧化锌为主成分的铁素体组合物 ，NiO为40.0摩尔％以上的氧化镍的残渣。 相对于100重量份的主成分，铁素体组合物也由以SiO 2为0.8〜10.0重量份的硅化合物，以化合物计1.0〜15.0重量份的化合物构成的副成分 的Co 3 O 4和0.7〜30.0重量份的Bi 2 O 3换算的铋化合物。 以Co 3 O 4计的钴化合物含量除以硅化合物含量换算成SiO 2的值为0.4〜5.5。

公开(公告)号：US20240304366A1

公开(公告)日：2024-09-12

申请号：US18594115

申请日：2024-03-04

Applicant: TDK Corporation

Inventor： Ryoma NAKAZAWA ,  Ryuichi WADA ,  Yu SAKURAI

IPC: H01F1/24 ,  H01F1/147

CPC classification number: H01F1/24 ,  H01F1/14766

Abstract: A soft magnetic metal particle may include a core particle and an insulating film over a surface of the core particle. The insulating film may include a complex oxide containing Si and B. B may constitute 1.0 mol % or more and 60.0 mol % or less of a total of Si and B in the insulating film.

公开(公告)号：US20220108836A1

公开(公告)日：2022-04-07

申请号：US17490893

申请日：2021-09-30

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：US20160293302A1

公开(公告)日：2016-10-06

申请号：US15090129

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Kouichi KAKUDA ,  Ryuichi WADA ,  Yukari AKITA ,  Yukio TAKAHASHI ,  Takashi SUZUKI ,  Asuka MURAI ,  Hiroyuki TANOUE

IPC: H01F1/03 ,  H03H7/01 ,  H01F38/14 ,  H01F27/255 ,  H01F27/28

CPC classification number: H03H7/0115 ,  C04B35/265 ,  H01F1/344 ,  H01F17/0013 ,  H01F17/04 ,  H01F2017/0026 ,  H01F2017/048

Abstract: Provided is a ferrite composition composed of: a main component including 23.0 to 47.0 mole % of Fe compound in terms of Fe2O3, 3.0 to 16.0 mole % of Cu compound in terms of CuO, 4.0 to 39.0 mole % of Zn compound in terms of ZnO, 1.5 to 13.0 mole % of Si compound in terms of SiO2, and a residue of Ni compound; and a subcomponent including, with respect to 100 parts by weight of the main component, 0.1 to 8.0 parts by weight of Co compound in terms of Co3O4 and 0.25 to 5.00 parts by weight of Bi compound in terms of Bi2O3.

Abstract translation: 提供一种铁素体组合物，其由以下组成的铁素体组合物构成：主要成分为以Fe 2 O 3计，Fe化合物23.0〜47.0摩尔％，CuO换算为3.0〜16.0摩尔％的Cu化合物，以ZnO计为4.0〜39.0摩尔％的Zn化合物 ，1.5〜13.0摩尔％的Si化合物，以SiO 2计，残留的Ni化合物; 和相对于100重量份的主成分的副成分，以Co 3 O 4换算为0.1〜8.0重量份的Co化合物，以Bi 2 O 3换算为0.25〜5.00重量份的Bi化合物。