In order to protect the PTC thermistors from damage, they are packaged in Radial packages. ldeally, the PTC thermistors should operate at -40°C. There must be no temperature above 125°C for this thermistor to function. There are 2 terminations on the PTC thermistor. In this thermistor, there are 2 pins. It is possible for PTC thermistors to provide voltages of 420V when they are operating. In PTC thermistors, the current should not exceed 2A.