公开(公告)号：US20180218812A1

公开(公告)日：2018-08-02

申请号：US15881118

申请日：2018-01-26

Applicant: TDK CORPORATION

Inventor： Akihiro HARADA ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Seigo TOKORO ,  Shota OTSUKA

IPC: H01F1/153 ,  C22C45/02 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/00

CPC classification number: H01F1/15325 ,  C22C38/002 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C45/00 ,  C22C45/02 ,  C22C2200/02 ,  C22C2200/04 ,  C22C2202/02 ,  H01F1/15308 ,  H01F1/15333

Abstract: A soft magnetic alloy including a compositional formula of ((Fe(1−(α+β))X1αX2β)(1−(a+b+c+e))MaBbPcCue)1−fCf, wherein X1 is one or more selected from the group consisting Co and Ni, X2 is one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements, “M” is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W, and V, 0.030

公开(公告)号：US20220375675A1

公开(公告)日：2022-11-24

申请号：US17740693

申请日：2022-05-10

Applicant: TDK CORPORATION

Inventor： Kentaro SAITO ,  Shota OTSUKA ,  Kyohei TONOYAMA ,  Tomonaga NISHIKAWA ,  Mitsuo NATORI ,  Yuuichi KAWAGUCHI ,  Junichi SHIMAMURA

IPC: H01F27/255 ,  H01F27/29

Abstract: A coil-embedded magnetic core capable of achieving improvements both in insulation and initial magnetic permeability, and coil devices thereof. The coil-embedded magnetic core embedding a coil made of a conductor, including magnetic powder and a resin, in which the coil-embedded magnetic core further includes a modifier.

公开(公告)号：US20230119388A1

公开(公告)日：2023-04-20

申请号：US17964129

申请日：2022-10-12

Applicant: TDK CORPORATION

Inventor： Shota OTSUKA ,  Takashi KUDO ,  Kyohei TONOYAMA ,  Taiji MATSUI ,  Ken SATOH ,  Miyuki ASAI

IPC: H01F27/32 ,  H01F27/28 ,  H01F27/29 ,  H01F27/02 ,  H01F27/34

Abstract: In the coil component, the external terminal and the metal magnetic powder-containing resin constituting the element body are not in direct contact with each other, and thus high ESD resistance is obtained. That is, even when a high transient voltage is applied between the pair of external terminals, insulation breakdown is less likely to occur, and an improvement in breakdown voltage with respect to the transient voltage can be realized.

公开(公告)号：US20230123939A1

公开(公告)日：2023-04-20

申请号：US17964457

申请日：2022-10-12

Applicant: TDK CORPORATION

Inventor： Shota OTSUKA ,  Takashi KUDO ,  Kyohei TONOYAMA ,  Taiji MATSUI

IPC: H01F27/29 ,  H01F27/32 ,  H01F27/24 ,  H01F27/34 ,  H01F27/02

Abstract: In a coil component includes an insulating layer interposed between an external terminal and an element body and formed in an entire region excluding a connection region in a formation region in which the external terminal is formed, even when a high transient voltage is applied between the pair of external terminals, insulation breakdown does not occur or hardly occurs because of the insulating layer.

公开(公告)号：US20190279801A1

公开(公告)日：2019-09-12

申请号：US16296348

申请日：2019-03-08

Applicant: TDK CORPORATION

Inventor： Kazuhiro YOSHIDOME ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Satoko MORI ,  Takuma NAKANO ,  Seigo TOKORO ,  Shota OTSUKA ,  Toru UJIIE ,  Kentaro MORI

IPC: H01F1/38 ,  B22F1/02

Abstract: A soft magnetic metal powder having soft magnetic metal particles, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part, a second coating part, and a third coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Si as a main component, the second coating part includes oxides of Fe as a main component, and the third coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.

公开(公告)号：US20190279798A1

公开(公告)日：2019-09-12

申请号：US16296367

申请日：2019-03-08

Applicant: TDK CORPORATION

Inventor： Satoko MORI ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Takuma NAKANO ,  Seigo TOKORO ,  Shota OTSUKA ,  Toru UJIIE ,  Kentaro MORI

IPC: H01F1/20 ,  H01F1/147 ,  H01F1/36 ,  H01F3/08

Abstract: A soft magnetic metal powder comprising soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part having an insulation property, and the coating part includes a soft magnetic metal fine particle.

公开(公告)号：US20180218810A1

公开(公告)日：2018-08-02

申请号：US15880920

申请日：2018-01-26

Applicant: TDK CORPORATION

Inventor： Akihiro HARADA ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Seigo TOKORO ,  Shota OTSUKA

IPC: H01F1/153 ,  H01F27/255 ,  H01F27/28 ,  H01F41/02 ,  H01F41/06

CPC classification number: H01F1/15308 ,  B22F1/0018 ,  B22F9/082 ,  B22F2009/0828 ,  C22C33/003 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/007 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/32 ,  C22C38/60 ,  C22C45/02 ,  H01F1/15333 ,  H01F27/255 ,  H01F27/2823 ,  H01F41/0226 ,  H01F41/0246 ,  H01F41/06

Abstract: A soft magnetic alloy including a main component having a compositional formula of (Fe(1−(α+β))X1αX2β)(1−(a+b+c))MaBbPc, and a sub component including at least C, S and Ti, wherein X1 is one or more selected from the group including Co and Ni, X2 is one or more selected from the group including Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, “M” is one or more selected from the group including Nb, Hf, Zr, Ta, Mo, W, and V, 0.020≤a≤0.14, 0.020≤b≤0.20, 0≤c≤0.040, α≥0, β≥0, and 0≤α+β≤0.50 are satisfied, when entire said soft magnetic alloy is 100 wt %, a content of said C is 0.001 to 0.050 wt %, a content of said S is 0.001 to 0.050 wt %, and a content of said Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing the content of said C by the content of said S is C/S, then C/S satisfies 0.10≤C/S≤10.