Abstract: A ceramic structural body is formed with a plurality of adjacently located integrally connected ceramic thin wall tubes. The outer surfaces of the tubes are metallized to form one electrode of the capacitor, the inner surfaces of the tubes also being metallized to form the other electrode of the capacitor. Connection means are connected to the outer surfaces of at least one of the tubes and to the inner surface of at least one of the tubes; the inner and outer surfaces of the tubes may be sub-divided, and electrically isolated from each other by portions of the underlying ceramic material, or may be continuous, to form a continuous electrode.