3W Current Sense Chip Resistor

TT Electronics
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LRF3W Buy Now

IRC's 3W surface mount chip resistors are offered in a 1225 package size. Featuring low resistance and high power capabilities, the LRF3W Series chip resistor features a resistance range from 0.002Ω to 0.100Ω, with absolute tolerances of ±1%, ±2%, ±5% and ±10%. Power dissipation is up to 3W at 70°C, with TCR as low as ±100ppm/°C. Operating temperature ranges from -55°C to +150°C. The chip resistors feature leach-resistant wrap-around terminations with either tin/lead or lead free matte tin over nickel plating.

The LRF3W series chips are the industry's smallest 3W current sense resistors. The ceramic-based construction of the resistors makes them considerably more rugged and stable than metal strip resistors since they are not subject to stress annealing, which can cause resistance changes at the elevated temperatures and high wattages found in the automotive environment.


  • Low resistance
  • High power rating
  • Space-saving package
  • Ceramic-based construction
  • Compatible with automated assembly equipment


  • AC/DC power supplies
  • Computers
  • Motor controls
  • Automotive
    • fuel-gauging detection
    • over-current detection