Patent ID: 8686826

Claim:
A surface mount circuit protection device comprising: (a) a laminar PTC resistive element having a substantially flat, rectangular box shape having first and second major surfaces and a thickness therebetween, said resistive element comprising a conductive polymer composition; (b) a first electrode layer formed at the first major surface and being substantially coextensive therewith, and comprising a first metal material of a type adapted to be soldered to a printed circuit substrate for effecting surface mounting of the device; (c) a second electrode layer comprising a foil layer formed at the second major surface and being substantially coextensive therewith; and (d) weld plate means of metal material formed separately of the second electrode layer, attached to the second electrode layer by means of solder, extending from the second electrode layer and having a thermal mass capable of withstanding resistance micro spot welding of a strap interconnect means without significant resultant damage to the device.