PTC thermistors should operate at 5°C. In order for this thermistor to function properly, the operating temperature must not exceed 80°C. In this thermistor, there are 2 pins.
B59548A135A20 Features
Mount: Surface Mount 2 Pins Tolerance: 20%
B59548A135A20 Applications
There are a lot of EPCOS B59548A135A20 PTC Thermistors applications.