A safety package is used to safeguard these PTC thermistors. PTC thermistors are terminated at 2. As you can see, this thermistor has 2 pins. A PTC thermistors' heat rating is 0.0099W. For thermistors, 175°C should be the maximum operating temperature. But the temperature should not fall below -40°C when the thermistor operates.
238166256111 Features
Terminal Shape: WIRE 2 Pins Tolerance: 20%
238166256111 Applications
There are a lot of Vishay 238166256111 PTC Thermistors applications.