Keeping PTC thermistors in Radial packages prevents them from being damaged. Packaged in the Tape and Reel for safety, these PTC thermistors are designed to perform at high temperatures. Ensure that the PTC thermistors are set to -20°C as their minimum operating temperature. In order for this thermistor to work properly, the operating temperature must not exceed 125°C. A thermistor like this has 2 pins.