MIL-PRF-23648-19 Resistor, Thermal \(Thermistor\), Hermetically Sealed, Positive Temperature Coefficient, Style Rth42This specification covers the detail requirements for style RTH42 thermistors. This style is available in resistance ratio E only. Terminal leads type S and W are available. Resistance tolerance versus temperature characteristics G, J, and K are applicable through the maximum temperature of 125 degrees C.