The thermistor with positive temperature coefficient based on graphite carbon

Development of a surface mount overcurrent protector fabricated from improved polymeric PTC material

“…On the other hand, Tsubata and Sorimachi reported a thick film PTC material which is made from carbon black and polymer prepared by graft copolymerization of vinyl monomer, and shows PTC characteristics due to difference of thermal expansion over the glass-transition temperature. They suggested its application to self-resetting overcurrent protective devices [9,10].…”