Common mode filter and method of manufacturing the same
US8325003B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2011 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Aug 26, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4913
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A common mode filter includes at least two inductance unit sets. Each inductance unit set includes a coil leading layer, an insulating substrate, at least two electrically conductive columns, and a coil main body layer. The coil leading layer is disposed on a first surface of the substrate, and includes at least two leading wires, at least four leading terminals, and at least two contacts. Each leading wire respectively connects one leading terminal and one contact. The coil main body layer is disposed on a second surface of the substrate, and includes a coil lead and two end portions thereof. Each electrically conductive column extends through the substrate, connecting one contact and one end portion. The two substrates and two coil main body layers of the at least two inductance unit sets are bonded by an electrically insulating layer. The two coil main body layers are electrically isolated from each other by the electrically insulating layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.