A Radial package is used to protect PTC thermistors. A minimum operating temperature of -40°C should be set for the PTC thermistors. It is important that this thermistor does not operate at a temperature above 125°C. A PTC thermistor has a termination of 2. This thermistor has 2 pins. PTC thermistors have been designed to operate at 30mA current. There should be no current over 400mA for PTC thermistors.