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TT Electronics - IRC


TT Electronics OARS Open Air Sense Resistors

For stability and accuracy in a compact format

TT Electronics OARS series is a product family of Open Air Sense Resistors geared for superior stability and accuracy on AC and DC current sensing in a compact SMD format, all while elevating the PCB hotspot.


  • Rated for 1W at 85°C (2W at 25°C)
  • Resistance values from 0.002Ω to 0.05Ω
  • Tolerances down to +1%
  • TCRs ranging as low as +20 ppm/°C
  • Single-digit nanohenry range inductance values
  • -40°C to +125 °C range of operation
  • Terminations ready to expand and contract along with the PC Board’s thermal cycling allowing them to meet or exceed the 1000-2000 cycles that most automotive manufacturer applications depend on.
  • Durability against mechanical stress caused by thermal cycling Welded copper terminals providing low resistance for reliability under the most demanding applications.

Experience stability, accuracy, and reliability in OARS with TT Electronics.