Patent ID: 7569452

Claim:
A method for providing a filtered feedthrough, comprising the steps of: a) providing a feedthrough comprising: a conductive ferrule comprising an annular sidewall having a ferrule opening extending axially along the ferrule sidewall from a first end to a second, opposite end thereof; a feedthrough insulator residing in the ferrule opening and having an outer sidewall hermetically sealed to an inner surface of the ferrule sidewall, the feedthrough insulator comprising at least one feedthrough insulator bore for passage of at least one electrically conductive terminal pin there through; and a terminal pin hermetically sealed in the feedthrough insulator bore; b) providing a filter capacitor, comprising the steps of: i) proving a filter insulator having a filter insulator bore for passage of the terminal pin there through and an outer sidewall residing adjacent to the inner surface of the ferrule sidewall; ii) depositing at least one first active electrode layer of an electrically conductive material supported on the filter insulator and having a first edge terminating immediately adjacent to the filter insulator bore; iii) depositing a first dielectric layer covering at least a portion of the first active electrode layer and having opposed ends spaced from the filter insulator bore and from the outer sidewall of the filter insulator, respectively; and iv) depositing at least one second, opposite polarity ground electrode layer of an electrically conductive material supported on the filter insulator and having a second edge terminating immediately adjacent to the outer sidewall of the filter insulator; and c) mounting the filter capacitor on at least one outer side of the feedthrough insulator; and d) electrically connecting the first active electrode layer to the terminal pin and the second ground electrode layer to the ferrule.