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公开(公告)号：US20250069795A1
公开(公告)日：2025-02-27
申请号：US18941111
申请日：2024-11-08
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO , Yuto SHIGA
Abstract: A multilayer coil component includes an element body, a coil in the element body, a connection conductor in the element body, and an external electrode on the element body. The element body includes a principal surface arranged to constitute a mounting surface and an end surface positioned adjacent to the principal surface. The connection conductor includes one end connected to the coil and another end connected to the external electrode. The external electrode includes a sintered metal layer formed on the element body and a conductive resin layer formed on the sintered metal layer. The sintered metal layer includes a portion on the principal surface and a portion on the end surface. The portion on the principal surface has an average thickness smaller than an average thickness of the portion on the end surface.
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公开(公告)号：US20220310301A1
公开(公告)日：2022-09-29
申请号：US17696169
申请日：2022-03-16
Applicant: TDK Corporation
Inventor： Akihiko OIDE , Makoto YOSHINO , Tomoki OKADA , Seiji OSADA , Yuuki OKAZAKI , Takeshi SASAKI , Mitsuru ITO , Kenta SASAKI , Kazuhiro EBINA , Takashi ABE , Hiroshi ONO
Abstract: In the multi-layer inductor, all of the plurality of through conductors are not aligned in a straight line, and the distance between the through conductors can be sufficiently kept in the element body having a predetermined dimensional standard. Therefore, the through conductor as a heat source is apart from each other, and the heat of the through conductor can be efficiently radiated to the outside of the element body.
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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：US20220310299A1
公开(公告)日：2022-09-29
申请号：US17697212
申请日：2022-03-17
Applicant: TDK Corporation
Inventor： Akihiko OIDE , Makoto YOSHINO , Tomoki OKADA , Seiji OSADA , Yuuki OKAZAKI , Takeshi SASAKI , Mitsuru ITO , Kenta SASAKI , Kazuhiro EBINA , Takashi ABE , Hiroshi ONO
Abstract: In the multi-layer inductor, the internal electrode includes the auxiliary conductor, and the auxiliary conductor is jointed to the external electrode at the end face. Therefore, when a defect occurs in a part of the through conductors, a current flows through the remaining through conductor(s) and a current also flows through the auxiliary conductor. Therefore, overheating at the joint surface between the remaining through conductor(s) and the external electrode can be prevented, and cutting and/or fusion starting from the joint surface can be prevented.
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Patent Agency Ranking
公开(公告)号：US20210375527A1
公开(公告)日：2021-12-02
申请号：US17329348
申请日：2021-05-25
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Daiki KATO , Yoji TOZAWA , Takashi ENDO , Seiichi NAKAGAWA , Mitsuru ITO , Kenta SASAKI , Akihiko OIDE , Makoto YOSHINO , Kazuhiro EBINA
Abstract: A multilayer inductor component includes an element body, an internal conductor, and an external electrode. The internal conductor is disposed in the element body. The external electrode is disposed on a surface of the element body and electrically connected to the internal conductor. The external electrode includes a sintered metal layer and a plating layer. The sintered metal layer is disposed on the surface of the element body. The plating layer covers the sintered metal layer. The sintered metal layer includes a thick portion and thin portions. The thick portion covers the surface of the element body. A plurality of glass particles is dispersed in the thick portion. The thin portions cover glass particles exposed on a surface of the thick portion among the plurality of glass particles and being in contact with the plating layer.
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公开(公告)号：US20240038436A1
公开(公告)日：2024-02-01
申请号：US18378815
申请日：2023-10-11
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO , Yuto SHIGA
CPC classification number: H01F27/2804 , H01F17/0013 , H01F27/292 , H01F27/29 , H01F27/324 , H01F2027/2809
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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公开(公告)号：US20220130594A1
公开(公告)日：2022-04-28
申请号：US17573301
申请日：2022-01-11
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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公开(公告)号：US20200185144A1
公开(公告)日：2020-06-11
申请号：US16789893
申请日：2020-02-13
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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公开(公告)号：US20170345553A1
公开(公告)日：2017-11-30
申请号：US15598606
申请日：2017-05-18
Applicant: TDK CORPORATION
Inventor： Masashi SHIMOYASU , Shinichi SATO , Seiichi NAKAGAWA , Mamoru KAWAUCHI , Shigetoshi KINOUCHI , Mitsuru ITO , Yuto SHIGA
CPC classification number: H01F27/2804 , H01F17/0013 , H01F27/29 , H01F27/292 , H01F27/324 , H01F2027/2809
Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.
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