BULK CAPACITOR AND METHOD

摘要

A bulk capacitor includes a first electrode formed of a metal foil (12) and a semi-conductive porous ceramic body (18) formed on the metal foil. A dielectric layer (22) is formed on the porous ceramic body for example by oxidation. A conductive medium (16) is deposited on the porous ceramic body filling the pores of the porous ceramic body and forming a second electrode. The capacitor can then be encapsulated with various layers and can include conventional electrical terminations. A method of manufacturing a bulk capacitor includes forming a conductive porous ceramic body on a first electrode formed of a metal foil, oxidizing to form a dielectric layer and filling the porous body with a conductive medium to form a second electrode. A thin semi-conductive ceramic layer can also be disposed between the metal foil and the porous ceramic body.