▎ 摘　　要

NOVELTY - A positive temperature coefficient device comprises nanocomposite layer (A) containing a polymer resin having a thermal expansion coefficient at 90° C of 200-250 e-6/K and a conductive nano-filler, and a nanocomposite layer (B) containing a rubber resin having a thermal expansion coefficient at 90° C of 90-120 e-6/K and conductive nano-fillers. USE - Positive temperature coefficient device used for thermistor and protection circuit element. ADVANTAGE - The device has excellent flexibility and positive temperature coefficient effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of positive temperature coefficient device.