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公开(公告)号：US20200303117A1
公开(公告)日：2020-09-24
申请号：US16816891
申请日：2020-03-12
申请人： TDK CORPORATION
发明人： Shinichi SATO , Takahiro SATO , Yusuke NAGAI , Mitsuharu KOIKE , Kazuhiro MIURA , Seiichi NAKAGAWA , Shinichi KONDO , Takashi SUZUKI
摘要： A multilayer coil component includes an element body and a plurality of coil conductors. The element body includes a plurality of metal magnetic particles and resin existing between the plurality of metal magnetic particles. The plurality of coil conductors is disposed in the element body, the plurality of coil conductors being separated from each other in a predetermined direction and electrically connected to each other. The plurality of metal magnetic particles included in the element body includes a plurality of metal magnetic particles having a particle size equal to or greater than one third of a distance between the coil conductors adjacent to each other in the predetermined direction and equal to or less than a half of the distance. Between the coil conductors adjacent to each other in the predetermined direction, the metal magnetic particles having the particle size are distributed along the predetermined direction.
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公开(公告)号：US20230230738A1
公开(公告)日：2023-07-20
申请号：US18097556
申请日：2023-01-17
申请人： TDK Corporation
发明人： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Shinichi SATO , Seiichi NAKAGAWA , Mitsuharu KOIKE , Takato SASAKI , Youhei IIDA
CPC分类号： H01F5/04 , H01F5/06 , H01F27/292 , H01F27/323 , H01F1/20
摘要： 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：US20220102038A1
公开(公告)日：2022-03-31
申请号：US17486258
申请日：2021-09-27
申请人： TDK CORPORATION
发明人： Yusuke NAGAI , Takashi SUZUKI , Kazuhiro EBINA , Kouichi KAKUDA , Kunihiko KAWASAKI , Shinichi KONDO , Shinichi SATO , Seiichi NAKAGAWA , Mitsuharu KOIKE , Kazuhiro MIURA
摘要： A multilayer coil component includes an element body containing a plurality of metal magnetic particles and a resin existing between the plurality of metal magnetic particles and a coil disposed in the element body and configured to include a plurality of electrically interconnected coil conductors. At least one of the plurality of coil conductors has a spiral shape and has conductor portions adjacent to each other when viewed from a direction along a coil axis of the coil. The conductor portion includes a straight conductor portion extending in a straight line and a connecting conductor portion connecting the straight conductor portion and constituting a corner portion of the coil conductor. The metal magnetic particles between the connecting conductor portions adjacent to each other are lower in density than the metal magnetic particles between the straight conductor portions adjacent to each other.
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公开(公告)号：US20230125854A1
公开(公告)日：2023-04-27
申请号：US17970182
申请日：2022-10-20
申请人： TDK CORPORATION
发明人： Yusuke NAGAI , Kazuhiro EBINA , Takahiro SATO , Kunihiko KAWASAKI , Shinichi SATO , Seiichi NAKAGAWA , Kouichi KAKUDA , Mitsuharu KOIKE , Keito YASUDA , Takato SASAKI
摘要： A stacked coil component includes: an element body, a coil disposed inside the element body; and a first outer electrode and a second outer electrode which are disposed in the element body. Each of the first outer electrode and the second outer electrode includes an electrode portion which includes a joining surface joined to the element body, and a plating surface opposite to the joining surface and is formed by plating, and of which at least a part is embedded in the element body.
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公开(公告)号：US20200303110A1
公开(公告)日：2020-09-24
申请号：US16817046
申请日：2020-03-12
申请人： TDK CORPORATION
发明人： Shinichi SATO , Takahiro SATO , Yusuke NAGAI , Mitsuharu KOIKE , Kazuhiro MIURA , Seiichi NAKAGAWA , Shinichi KONDO , Takashi SUZUKI
摘要： A multilayer coil component includes an element body including a plurality of metal magnetic particles, and a plurality of coil conductors. The plurality of coil conductors is disposed in the element body. The plurality of coil conductors is separated from each other in a predetermined direction and electrically connected to each other. The plurality of coil conductors includes one pair of side surfaces opposing each other in the predetermined direction. Surface roughness of the one pair of side surfaces is less than 40% of an average particle size of the plurality of metal magnetic particles.
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公开(公告)号：US20230317342A1
公开(公告)日：2023-10-05
申请号：US18206202
申请日：2023-06-06
申请人： TDK CORPORATION
发明人： Shinichi SATO , Takahiro SATO , Yusuke NAGAI , Mitsuharu KOIKE , Kazuhiro MIURA , Seiichi NAKAGAWA , Shinichi KONDO , Takashi SUZUKI
CPC分类号： H01F17/0013 , H01F1/24 , H01F2017/0066
摘要： A multilayer coil component includes an element body including a plurality of metal magnetic particles, and a plurality of coil conductors. The plurality of coil conductors is disposed in the element body. The plurality of coil conductors is separated from each other in a predetermined direction and electrically connected to each other. The plurality of coil conductors includes one pair of side surfaces opposing each other in the predetermined direction. Surface roughness of the one pair of side surfaces is less than 40% of an average particle size of the plurality of metal magnetic 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
申请人： TDK CORPORATION
发明人： Yusuke NAGAI , Kazuhiro EBINA , Kunihiko KAWASAKI , Shinichi KONDO , Shinichi SATO , Seiichi NAKAGAWA , Mitsuharu KOIKE , Takato SASAKI , Youhei IIDA
IPC分类号： H01F27/29 , H01F27/255 , H01F27/28
CPC分类号： H01F27/29 , H01F27/255 , H01F27/2804 , H01F2027/2809
摘要： 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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公开(公告)号：US20220102039A1
公开(公告)日：2022-03-31
申请号：US17486640
申请日：2021-09-27
申请人： TDK CORPORATION
发明人： Yusuke NAGAI , Takashi SUZUKI , Kazuhiro EBINA , Kouichi KAKUDA , Kunihiko KAWASAKI , Shinichi KONDO , Shinichi SATO , Seiichi NAKAGAWA , Mitsuharu KOIKE , Kazuhiro MIURA
摘要： A multilayer coil component includes an element body containing a plurality of metal magnetic particles and a resin existing between the plurality of metal magnetic particles and a coil configured to include a plurality of electrically interconnected coil conductors. At least one of the plurality of coil conductors has a spiral shape and has conductor portions adjacent to each other when viewed from a direction along a coil axis of the coil. The plurality of metal magnetic particles contained in the element body include a plurality of metal magnetic particles having a particle diameter of ⅓ or more and ½ or less of a distance between the conductor portions adjacent to each other in the coil conductor. The metal magnetic particles having the particle diameter are arranged along a facing direction of the conductor portions between the conductor portions adjacent to each other in the coil conductor.
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