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Title:
INDUCTANCE ELEMENT AND ELECTRONIC AND ELECTRICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/221015
Kind Code:
A1
Abstract:
This inductance element is provided with: a coil body wound by a conductive metal material covered with an insulating material; a pair of terminal plates extending from the coil body; and a magnetic core having at least the coil body embedded therein, wherein one end portion of each of the pair of terminal plates is positioned outside the magnetic core and a pair of coating-type electrodes are further provided which are electrically connected to each of the pair of terminal plates and cover a portion of the surface of the magnetic core. The magnetic core contains magnetic powder, and the cumulative particle size distribution based on the volume of the magnetic powder is such that a 10% cumulative diameter D10 is 1.8 μm-3.0 μm, a 50% cumulative diameter D50 is 4 μm-5 μm, and a 90% cumulative diameter D90 is 7 μm-10 μm. According to the present invention, it is possible to appropriately ensure a dielectric withstand voltage even when the inductance element is downsized.

Inventors:
KOJIMA, Akinori (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
SATO, Keiichiro (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
SATO, Akira (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
NAKABAYASHI, Ryo (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
Application Number:
JP2018/014867
Publication Date:
December 06, 2018
Filing Date:
April 09, 2018
Export Citation:
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Assignee:
ALPS ELECTRIC CO., LTD. (1-7 Yukigaya-otsukamachi, Ota-ku Tokyo, 01, 〒1458501, JP)
International Classes:
H01F17/04; H01F27/255; H01F27/29; H01F37/00
Domestic Patent References:
WO2016185940A12016-11-24
Foreign References:
JP2012164959A2012-08-30
Attorney, Agent or Firm:
OKUBO, Katsuyuki (7th Floor, SEIBUNDO Building 4-3-26, Kudan-kit, Chiyoda-ku Tokyo 73, 〒1020073, JP)
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