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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
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.
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公开(公告)号：US20230230742A1
公开(公告)日：2023-07-20
申请号：US18085983
申请日：2022-12-21
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Yuya ISHIMA , Shinichi SATO , Seiichi NAKAGAWA , Kosuke ITO , Keito YASUDA , Youhei IIDA
CPC classification number: H01F17/0013 , H01F27/292 , H01F27/022 , H01F1/36
Abstract: A multilayer coil component includes an element body including an end surface, a coil disposed in the element body, and an external electrode disposed on an end portion of the element body and connected to the coil. The external electrode includes a conductive resin layer. The conductive resin layer includes resin and a plurality of metal particles and is in contact with the end surface. The conductive resin layer includes a metal particle group. The metal particle group consists a plurality of first metal particles included in the plurality of metal particles, and the plurality of first metal particles is adjacent to the end surface and separated from the end surface.
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公开(公告)号：US20230215616A1
公开(公告)日：2023-07-06
申请号：US18090240
申请日：2022-12-28
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Yuya ISHIMA , Shinichi SATO , Kosuke ITO
CPC classification number: H01F27/292 , H01F17/0013 , H01F1/24
Abstract: A coil component includes: an element body; a coil including a plurality of coil conductors disposed in the element body and electrically connected to each other; an external electrode disposed on the element body; and a connection conductor that connects the coil and the external electrode. The connection conductor has an end portion exposed from an outer surface of the element body and connected to the external electrode. The end portion has a shape extending outward over an entire circumference.
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公开(公告)号：US20220277879A1
公开(公告)日：2022-09-01
申请号：US17666170
申请日：2022-02-07
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Hidekazu SATO , Kazuhiro EBINA , Kunihiko KAWASAKI , Takahiro SATO , Kouichi KAKUDA , Yuya ISHIMA , Shinichi KONDO , Shinichi SATO , Masaki TAKAHASHI
Abstract: In a multilayer coil component, first and second conductor patterns respectively have parallel parts that overlap in a lamination direction and non-parallel parts that do not overlap. The parallel parts of the first and second conductor patterns of one set are interconnected by a first through hole. The non-parallel parts of the first and second conductor patterns of sets adjacent to each other in the lamination direction are interconnected by a second through hole.
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5.发明申请公开(公告)号：US20170365385A1
公开(公告)日：2017-12-21
申请号：US15618493
申请日：2017-06-09
Applicant: TDK CORPORATION
Inventor： Takashi SUZUKI , Hidekazu SATO , Yuusuke NAGAI , Kouichi KAKUDA , Kunihiko KAWASAKI , Shinichi KONDO , Yuya ISHIMA , Shinichi SATO , Masaki TAKAHASHI , Takashi ENDO
IPC: H01F1/147 , H01F27/255 , H01F27/28
CPC classification number: H01F1/14766 , H01F17/0013 , H01F17/04 , H01F27/255 , H01F27/2804 , H01F2017/048 , H01F2027/2809
Abstract: A soft magnetic metal powder includes a plurality of soft magnetic metal grains composed of an Fe—Si based alloy. A content of P in the Fe—Si based alloy is 110 to 650 ppm provided that a total content of Fe and Si is 100 mass %. A soft magnetic metal fired body includes soft magnetic metal fired grains composed of an Fe—Si based alloy. A content of P in the Fe—Si based alloy is 110 to 650 ppm provided that a total content of Fe and Si is 100 mass %.
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Patent Agency Ranking
公开(公告)号：US20230230738A1
公开(公告)日：2023-07-20
申请号：US18097556
申请日：2023-01-17
Applicant: TDK Corporation
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Shinichi SATO , Seiichi NAKAGAWA , Mitsuharu KOIKE , Takato SASAKI , Youhei IIDA
CPC classification number: H01F5/04 , H01F5/06 , H01F27/292 , H01F27/323 , H01F1/20
Abstract: A coil component includes an element body, a coil and a first electrode part. The element body includes a main surface which is used as a mounting surface. The coil is disposed in the element body. The first electrode part is embedded in the element body and electrically connected to the coil. The first electrode part includes a first surface exposed from the main surface and a second surface opposing the first surface. An area of the first surface is larger than an area of the second surface when viewed from a direction orthogonal to the first surface.
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公开(公告)号：US20230072794A1
公开(公告)日：2023-03-09
申请号：US17939027
申请日：2022-09-07
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Takahiro SATO , Kunihiko KAWASAKI , Shinichi SATO , Shinichi KONDO , Kouichi KAKUDA , Yuya ISHIMA , Kosuke ITO
Abstract: A multilayer coil component includes: an element body formed by stacking a magnetic body layer containing a plurality of metal magnetic particles of a soft magnetic material; a first coil disposed in the element body and configured to include a plurality of first coil conductors; a second coil disposed in the element body and configured to include a plurality of second coil conductors; a first external electrode to which one end portion of each of the first coil and the second coil is connected; and a second external electrode to which the other end portion of each of the first coil and the second coil is connected.
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公开(公告)号：US20230070168A1
公开(公告)日：2023-03-09
申请号：US17939036
申请日：2022-09-07
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Takahiro SATO , Kunihiko KAWASAKI , Shinichi SATO , Seiichi NAKAGAWA , Kouichi KAKUDA , Yuya ISHIMA , Mitsuru ITO
IPC: H01F27/29
Abstract: A multilayer coil component includes: an element body; a coil disposed in the element body; and a first external electrode disposed on a surface of the element body in which the first external electrode has a first electrode layer disposed on the surface of the element body and a first plating layer and a second plating layer disposed on the first electrode layer, and the first plating layer and the second plating layer are disposed so as to be scattered in a plurality of places on an edge of the first electrode layer.
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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
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.
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公开(公告)号：US20230223183A1
公开(公告)日：2023-07-13
申请号：US18082689
申请日：2022-12-16
Applicant: TDK CORPORATION
Inventor： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Shinichi SATO , Seiichi NAKAGAWA , Mitsuharu KOIKE , Takato SASAKI , Youhei IIDA
IPC: H01F27/29 , H01F27/255 , H01F27/28
CPC classification number: H01F27/29 , H01F27/255 , H01F27/2804 , H01F2027/2809
Abstract: The coil component includes an element body, a coil, a first electrode part and a second electrode part. The element body includes a main surface to be used as a mounting surface. The coil is disposed in the element body. The first electrode part and the second electrode part are spaced apart from each other in a first direction, embedded in the element body in such a way as to be exposed from the main surface, and electrically connected to the coil. The first electrode part includes a first surface exposed from the main surface and a protrusion disposed in the element body in such a way as to be spaced apart from the main surface. The protrusion protrudes more toward the second electrode part than the first surface in the first direction.
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