Powder core, manufacturing method of powder core, inductor including powder core, and electronic/electric device having inductor mounted therein
US10283266B2 · kind B2 · utility
2Cited by
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13Claims
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Key dates
| Filing date | Mar 29, 2017 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Mar 29, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2017/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A powder core includes: a powder of a crystalline magnetic material; and a powder of an amorphous magnetic material, in which a median diameter D50A of the powder of the amorphous magnetic material is 15 μm or less, and satisfies the expression: 1≤D50A/D50C≤3.5 with respect to a median diameter D50C of the powder of the crystalline magnetic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.