Thermistors manufactured by NTC are packaged as Tape & Reel (TR). In order to make it as convenient as possible, it is included in the package 0603. NTC thermistors operate reliably at a maximum operating temperature of 125°C. A NTC thermistor can operate at a temperature of -40°C for reliability. It is necessary to connect the 2 pins to the NTC thermistors for them to function properly.