Hermetically sealed capacitor assembly

摘要

A capacitor assembly that includes an electrolytic capacitor that contains an anode body, dielectric overlying the anode, and a solid electrolyte overlying the dielectric is provided. An anode lead is also electrically connected to the anode body and extends therefrom, The capacitor and leadframe are enclosed and hermetically sealed within a ceramic housing in the presence of an inert gas. In this manner, the solid electrolyte (e.g., conductive polymer) is less likely to undergo a reaction in high temperature environments, thus increasing the thermal stability of the capacitor assembly.

主权项

1. A capacitor assembly comprising:
an electrolytic capacitor comprising an anode body that includes tantalum or niobium oxide, dielectric, and solid electrolyte overlying the dielectric, the solid electrolyte including a polypyrrole, polythiophene, polyaniline, polyacetylene, poly-p-phenylene, polyphenolate, or a combination thereof, wherein an anode lead is electrically connected to the anode body and extends therefrom; a housing within which the electrolytic capacitor is positioned and hermetically sealed, the housing defining an interior cavity having a gaseous atmosphere, the gaseous atmosphere containing an inert gas; an anode termination that is in electrical connection with the anode lead; and a cathode termination that is in electrical connection with the solid electrolyte.