Coil component and magnetic metal powder containing resin used therefor
US9406420B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2013 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Sep 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2027/2809
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil component 1 is provided with coil conductors 10a and 10b and a magnetic metal powder containing resin 22 (22a and 22b) covering the coil conductors 10a and 10b. The magnetic metal powder containing resin 22 includes first metal powder having a first average grain diameter, second metal powder having a second average grain diameter that is smaller than the first average grain diameter, and third metal powder having a third average grain diameter that is smaller than the second average grain diameter. The first average grain diameter is 15 μm or more and 100 μm or less. The third average grain diameter is 2 μm or less. The first metal powder mainly contains Permalloy and the second and third metal powders mainly contain carbonyl iron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.