Compression molded core, method for manufacturing the compression molded core, inductor including the compression molded core, and electric/electronic equipment mounted with the inductor

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United States of America

PATENT NO 12224092
APP PUB NO 20210233690A1
SERIAL NO

17227019

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Abstract

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A compression molded core contains a plurality of soft magnetic material powders. A first powder and a second powder in the plurality of powders satisfy D1>D2, 0.23≤(D1−D2)/D1<0.6, D1≤7 μm, and 3 μm≤DT≤5.7 μm. D1 is the median diameter, which is a particle size at which the integrated particle diameter distribution from the small particle size side is 50% in a volume-based particle size distribution measured by a laser diffraction/scattering method, of the first powder and is maximum among median diameters; D2 is the median diameter D2 of the second powder and is minimum among median diameters; and DT is determined using the weight rate R1 of the first powder and the weight rate R2 of the second powder by R1×D1+R2×D2.

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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
Kojima, Akinori Niigata-ken, JP 43 245
Nakabayashi, Ryo Niigata-ken, JP 51 174
Sato, Keiichiro Niigata-ken, JP 44 265

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