Patent ID: 6040754
Filing Date: 2000-03-21
Classification: H01H,Y10T

Abstract:
A thin type thermal fuse comprising:a resin base film;a pair of belt-shaped lead conductors, tip portions of the pair of belt-shaped lead conductors being fixed on the resin base film;a low melting-point fusible alloy piece coupled between the tip end portions of the belt-shaped lead conductors;a flux applied on the low melting-point fusible alloy piece;a resin cover film which is disposed on a one surface of the resin base film so that a space between said films at peripheries of both the resin cover film and the resin base film is sealed and a space between the resin cover film and the belt-shaped lead conductors is sealed;wherein a relation of (V/L).sup.1/2 /d.ltoreq.1.8 is satisfied, where a distance between the tip portions of the belt-shaped lead conductors is set to be L, a volume of the low melting-point fusible alloy piece is set to be V and a distance between a front surface of the resin base film and an inner surface of the resin cover film is set to be d.