Bt NTE Electronics, INc. Wii en replacing thermal Si it-offs] e fallowing precautions should be serve. 1. Proper identification of part to-be repleted 1t s Very impunity. detainment the correct cut-off temperatures Fri afy information available. The original device may be marked with a part member, a UT-ofl temperature in Celsius or Fahrenheit, three resistor-type.