Card type fuse and method of producing the same

摘要

A card type fuse aimed at reducing production costs and improving a forming precision of an exothermic fusing portion 2a. The card type fuse comprises an insulation substratum 1, fuse circuits 2 arranged on the insulation substratum 1 and having a narrow exothermic fusing portion 2a, and a cover layer 3 covering fuse circuits 2. The cover layer 3 is made of a heat resisting film. The fuse circuits 2 are printed on the heat resisting film by means of a conductive paste. The insulation substratum 1 is made of a heat resisting thermoplastic resin suitable for an SMT. The insulation substratum 1 is integrally formed on the side having the fuse circuits on the heat resisting film.