The PTC thermistors are put into 0805 packages to protect the devices from damage. The minimum operating temperature for the PTC thermistors should be set to -20°C. To make sure this thermistor works, the operating temperature must not exceed 130°C. Nominally, this thermistor can supply 32V voltage when it works. The current for which the PTC thermistors have been designed is 100μA.
PRF21BC471QB2RA Features
Package / Case: 0805 Mount: PCB, Surface Mount Tolerance: 50%
PRF21BC471QB2RA Applications
There are a lot of Murata Electronics PRF21BC471QB2RA PTC Thermistors applications.