A capacitor (10) comprising a casing (12) of first and second casing members (14,16) secured to each other to provide an enclosure, a feedthrough (30) electrically insulated from the casing (12) and extending there from through a glass-to-metal seal, first and second anodes (46,48) electrically connected to each other within the casing, a cathode, and an electrolyte is described. The cathode comprises cathode active material deposited on planar faces of the first and second casing members (14,16). There is also a cathode current collector disposed intermediate the first and second anodes. The cathode current collector supports cathode active material on both of its major faces and includes a tab that is directly electrically connected to a ferrule (36) of the glass-to-metal seal. That way, the casing (12) is the negative terminal for the cathode and a feedthrough pin extending through the glass-to-metal seal is the positive terminal for the anode of the capacitor.
