Over-current protection device

Abstract

An over-current protection device includes an electrode layer and a heat-sensitive layer. The heat-sensitive layer contacts a top metal layer and a bottom metal layer of the electrode layer, and is laminated therebetween. In addition, the heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a conductive filler. The polymer matrix includes a first fluoropolymer, by which the over-current protection device has a starting jump temperature of resistance ranging from 184° C. to 192° C. The conductive filler includes carbon black and a metal compound, thereby forming an electrically conductive path in the heat-sensitive layer.

Dependencies are inferred from the claim text.