FW Series Fusible Resistors


The Bourns® FW Series of fusible resistors are designed for AC/DC power supplies requiring protection from severe surges caused by overvoltage or overcurrent (short circuit).

Typically the power supply would be driving a microcontroller, LEDs, display or relay. The Model FW Series is made using wirewound technology. The most common resistance values used are 10 Ohm, 22 Ohm and 47 Ohms.


  • Rated for 120V/240Vac
  • Wirewound technology
  • UL1412 Listed
  • 1W, 2W, 3W, 4W, 5W, 7W models
  • Surge tested according to IEC 6100-4-5
  • RoHS compliant
  • Integration of inrush resistor and fuse into one component
  • Space and cost savings
  • Access to U.S. market with UL listing
  • Additional functions such as EMI filtering can be achieved using the resistor


  • Coffee machines
  • Washing machines
  • Refrigerators
  • Air conditioning
  • Heating
  • Lighting
  • Telecom power supplies
  • Industrial power supplies