To prevent damage to the PTC thermistors, they are packaged in Radial packages. PTC thermistors are packaged in the Bulk as a safety measure. Temperature 0°C is the minimum operating temperature for PTC thermistors. This thermistor must not operate above 70°C in order for it to work. Its terminations are 2. A thermistor has 2 pins. A PTC thermistor could provide 265V voltage when operating. A PTC thermistor is rated as 0.0073W in terms of heat production.