Tantalum chip capacitor and method of manufacture

Details Tantalum chip capacitor and method of manufacture Tantalum chip capacitor and method of manufacture

1977-04-27

1977-11-29

Dost, Gerald A.

Metal working

Method of mechanical manufacture

Assembling or joining

B01J 1700

Patent

active

040598870

ABSTRACT:
The present invention is directed to a method of making a tantalum chip capacitor and the resultant capacitor device. The invention is characterized by encapsulating an essentially conventional tantalum capacitor subassembly including a body portion, the outer surface of which comprises a cathode, an anode, and an anode lead extending therefrom, within a metallic tubular case, preferably rectangular in transverse section. The subassembly is inserted within the casing and electrical connection is effected between the cathode and the case adjacent one end. An electrical connection is effected between the anode and the other end of the case. The case is thereafter filled with a polymeric insulating material in liquid form, which is thereafter caused to harden. After the polymeric material has hardened, a band, section or groove of the case is cut away to interrupt a direct current path between the ends of the case, which function as the terminals of the capacitor, the ends being maintained in structural integrity by the hardened polymeric material.

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