ldeally, the PTC thermistors should operate at -40°C. There must be no temperature above 125°C for this thermistor to function. In this thermistor, there are 2 pins.
B59973C120A70 Features
Mount: Through Hole 2 Pins Tolerance: 20%
B59973C120A70 Applications
There are a lot of TDK Corporation B59973C120A70 PTC Thermistors applications.