Patent ID: 8531263

Claim:
A circuit protection device comprising: a substrate; a conducting layer disposed on said substrate, said conducting layer having at least a first and second terminals; a resistive element disposed on said substrate; a conducting pad disposed on said substrate, said conducting pad aligned with said resistive layer; a dielectric layer disposed on said substrate between said resistive element and said conducting pad; a spring disposed on said substrate, said spring having a first end electrically connected to said first terminal and a second end electrically connected to said second terminal; and a low melting material disposed between said conducting pad and at least one of said first and second ends of said spring, wherein said spring has a first conducting position when said first and second ends are connected to respective first and second terminals, said spring having a second open position during an abnormal circuit condition when said resistive element heats said low melting material and at least one of said first and second ends of said spring are displaced away from at least one of said first and second terminals to create an open circuit.