Typically, NTC thermistors are packaged in a Tape & Reel (TR) package. In order to make things easier, it is included in the package 0805 (2012 Metric). A NTC thermistor must have a resistance tolerance of ±5% in order to operate. For reliable performance, NTC thermistors should be set to -55°C~125°C. The thermistors set their maximum power to 210mW.