Patent ID: 6566978
Filing Date: 2003-05-20
Classification: A61N,H01G

Abstract:
A feedthrough capacitor filter assembly, comprising:a capacitor body having first and second electrode plates encased therein in spaced relation, at least one terminal pin bore formed axially therethrough, and at least one leak detection passage extending axially therethrough; at least one conductive terminal pin extending through said at least one terminal pin bore in conductive relation with said first electrode plate; a conductive ferrule having at least one aperture formed axially therethrough, said capacitor body being mounted to said ferrule to extend across and close said at least one ferrule aperture with said second electrode plate in conductive relation with said ferrule; and at least one hermetic seal formed from a dielectric material and extending across and sealing said at least one ferrule aperture at one axial side of said capacitor body, said at least one hermetic seal defining an inboard face presented toward said capacitor body and an outboard face presented away from said capacitor body, said at least one terminal pin extending through said at least one hermetic seal; wherein said at least one leak detection passage vents said inboard face of said at least one hermetic seal.