发明授权
- 专利标题: Inductor element
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申请号: US15967769申请日: 2018-05-01
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公开(公告)号: US10886056B2公开(公告)日: 2021-01-05
- 发明人: Yasuhide Yamashita , Katsushi Yasuhara , Chiomi Sato
- 申请人: TDK CORPORATION
- 申请人地址: JP Tokyo
- 专利权人: TDK CORPORATION
- 当前专利权人: TDK CORPORATION
- 当前专利权人地址: JP Tokyo
- 代理机构: Oliff PLC
- 优先权: JP2017-091666 20170502
- 主分类号: H01F27/255
- IPC分类号: H01F27/255 ; H01F3/08 ; H01F27/28 ; H01F3/10 ; H01F17/04 ; H01F27/02
摘要:
An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. The wire-winding portion includes an inner circumferential surface. A winding-wire inner circumferential neighboring region is a region of the core portion within a distance from the inner circumferential surface toward a winding axis of the wire-winding portion. An inner-core central region is a region of the core portion within a distance from the winding axis center toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. Sα−Sβ1≥5.0% is satisfied, where Sα(%) and Sβ1(%) are respectively an area ratio of a magnetic powder in the inner-core central region and the winding-wire inner circumferential neighboring region.
公开/授权文献
- US20180322997A1 INDUCTOR ELEMENT 公开/授权日:2018-11-08
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