For protection, PTC thermistors are packaged in Radial packages. Packaged in the Box, these PTC thermistors are safe to handle. Using PTC thermistors at -40°C temperature should be their minimum operating temperature. There must not be an increase in temperature above 125°C for this thermistor to work. It has a total of 2 pins. When it is operational, the thermistor should be able to supply 63V voltage. PTC thermistors have been designed to operate at 90mA volts. In order to avoid overheating, PTC thermistors should be kept at a 3A current.