OAR3R100FLF
TT Electronics/IRC
100 mOhms ±1% 3W Through Hole Resistor Radial Current Sense, Flame Proof, Pulse Withstanding, Safety Metal Element
Active24,898 in stock
Overview
The OAR3R100FLF is a 100 mOhm, 3W metal element current sense resistor featuring an open-air radial design for superior thermal management. It is engineered for high-pulse environments and features a flame-proof construction, making it suitable for safety-critical power monitoring. The physical design allows for significant airflow around the resistive element, minimizing heat transfer to the PCB.
Why Choose This Part
This resistor offers a low +/-1% tolerance and a low temperature coefficient of 30 ppm/C, ensuring precision across its -40C to 125C operating range. Its open-air 'pedestal' format prevents localized board heating and provides excellent pulse-withstanding capabilities compared to standard thick-film chips.
Applications
Power Supply Monitoring
Used as a shunt resistor in DC-DC converters and switching power supplies to monitor load current.
Motor Control Feedback
Provides accurate current sensing for phase current detection in small to medium motor drive circuits.
Battery Charging Circuits
Integrates into battery management systems to track charge and discharge rates with high pulse stability.
Overcurrent Protection
Acts as a sensing element for trip circuits in industrial controllers and consumer electronics.
Key Specifications
Features
Current Sense, Flame Proof, Pulse Withstanding, Safety
Tolerance
+/-1%
Resistance
100 mOhms
Composition
Metal Element
Power (Watts)
3W
Package / Case
Radial
Size / Dimension
0.600" L x 0.065" W (15.24mm x 1.65mm)
Height - Seated (Max)
0.921" (23.40mm)
Operating Temperature
-40degC ~ 125degC
Number of Terminations
2
Temperature Coefficient
+/-20ppm/degC
