Coil component and method for producing magnetic powder-containing resin material used therefor
US11769614B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Sep 26, 2023 |
| Priority date | — |
| Expiry date | Aug 21, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2017/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil component that can maintain a high magnetic permeability and improve a DC superposition characteristic, and a method for producing a magnetic powder-containing resin material used to provide such a coil component. A coil component according includes an element body including a coil conductor and a magnetic portion. The coil conductor is formed of a wound conductor wire. The magnetic portion containing metal magnetic material grains covered with an insulating coating, a resin, and insulator grains. The coil component further includes an external electrode electrically connected to an extended portion of the coil conductor and disposed on a surface of the element body. The insulator grains have a relative permeability lower than a relative permeability of the metal magnetic material grains, and the insulator grains and the insulating coating are a compound whose main component is the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.