Keeping PTC thermistors in 0805 packages prevents them from being damaged. Packaged in the Tape & Reel (TR) for safety, these PTC thermistors are designed to perform at high temperatures. Ensure that the PTC thermistors are set to -40°C as their minimum operating temperature. In order for this thermistor to work properly, the operating temperature must not exceed 125°C. PTC thermistors have terminations of 2. A thermistor like this has 2 pins.