Dust core, method for manufacturing dust core, inductor including dust core, and electronic/electric device including inductor

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United States of America Patent

PATENT NO 12103081
APP PUB NO 20230081183A1
SERIAL NO

17983270

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Abstract

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A dust core contains a powder of a crystalline magnetic material powder and a powder of an amorphous magnetic material. The sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 83 mass percent or more. The mass ratio of the content of the crystalline magnetic material powder to the sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 20 mass percent or less. The median diameter D50a of the amorphous magnetic material powder is greater than or equal to the median diameter D50c of the crystalline magnetic material powder. A 10% cumulative diameter D10a in a volume-based cumulative particle size distribution of the amorphous magnetic material powder is 9.5 μm or less.

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Patent Owner(s)

Patent OwnerAddress
DELTA ELECTRONICS (JAPAN) INC4-11-25 SHIBAURA MINATO-KU TOKYO-TO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koshiba, Hisato Niigata-ken, JP 14 138
Takadate, Kinshiro Niigata-ken, JP 11 20
Yamashita, Shokan Niigata-ken, JP 5 4

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