To prevent damage to the PTC thermistors, they are packaged in Radial packages. Temperature -40°C is the minimum operating temperature for PTC thermistors. This thermistor must not operate above 85°C in order for it to work. thermistors have been rated for 90V in DC circuits. When PTC thermistors produce heat, they should be at 1.5W.
MC33179 Features
Package / Case: Radial Mount: Through Hole
MC33179 Applications
There are a lot of Multicomp MC33179 PTC Thermistors applications.