Shielded three-terminal flat-through EMI/energy dissipating filter with co-fired hermetically sealed feedthrough
US9463329B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2014 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Apr 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2007/013
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A hermetic terminal assembly for an AIMD includes a shielded three-terminal flat-through EMI energy dissipating filter and a hermetically sealed feedthrough configured to be attachable to the ferrule or AIMD housing. The flat-through filter includes a first shield plate, an active electrode plate, and a second shield plate where the shield plates are electrically coupled to a metallization which in turn is coupled either to the ferrule or AIMD housing. The feedthrough includes an alumina substrate comprised of at least 96% alumina and a via hole with a substantially closed pore and substantially pure platinum fill. The platinum fill forms a tortuous and mutually conformal knitline or interface between the alumina substrate and the platinum fill, wherein the platinum fill is electrically coupled to at least one active electrode plate in non-conductive relationship to the at least one first and second shield plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.