Patent ID: 8780521

Claim:
An electronic protection component comprising: an outer case bounding an outer cavity therein; a varistor with two varistor leads connected thereto, wherein said varistor is arranged in said outer cavity; a raised section created by extending the front wall of the outer case; an inner case bounding an inner cavity therein, wherein said inner case has a flat side wall, and said inner case is arranged in said raised section of said outer cavity with said flat side wall in flat planar surficial contact with a surface of said varistor; an alloy-type thermal fuse made of an alloy fuse material with two fuse leads connected thereto, wherein said fuse is arranged in said inner cavity of said inner case; an alloy melting promoting agent filled into said inner cavity such that said alloy melting promoting agent surrounds and contacts said alloy fuse material of said fuse in said inner cavity; an epoxy resin seal that seals an opening of said outer case so as to enclose and seal said outer cavity with said varistor and said inner case therein, and with at least two of said leads extending out of said outer case through said epoxy resin seal; wherein one of said varistor leads is connected directly to one of said fuse leads at a lead junction within said outer case, said lead junction is enclosed and sealed under said epoxy resin seal within said outer case for shortening the distance of heat conduction; wherein said electronic protection component is capable of transferring heat from said varistor to said alloy-type thermal fuse by combination of contact between said varistor and said inner case and through said lead junction and through one of said fuse leads that is connected to said lead junction.