OAR5R020FLF
TT Electronics/IRC
20 mOhms ±1% 5W Through Hole Resistor Radial Current Sense, Flame Proof, Pulse Withstanding, Safety Metal Element
Active67,193 in stock
Overview
The OAR5R020FLF is a 20 mOhm, 5W through-hole current sense resistor from TT Electronics. This open-air metal element resistor is designed for high-power applications requiring precise current monitoring and high surge handling capability. Its flameproof construction and 1% tolerance make it suitable for power management and safety-critical monitoring circuits.
Why Choose This Part
The open-air radial design facilitates natural convection cooling, allowing the device to handle 5W without the heat trapping typical of molded components. It features an exceptionally low temperature coefficient of 20 ppm/C, ensuring high measurement accuracy across its -40C to 125C operating range.
Applications
Power Supply Current Monitoring
Used as a shunt resistor in high-wattage power supplies to monitor output current with minimal voltage drop.
Motor Control Feedback
Provides real-time phase current measurement in industrial motor drives and high-torque actuation systems.
Battery Charging Systems
Facilitates accurate charge and discharge current sensing in high-current battery management units.
Inrush Current Limiting
The pulse-withstanding design allows the resistor to survive peak current surges during system startup or switching events.
Key Specifications
Features
Current Sense, Flame Proof, Pulse Withstanding, Safety
Tolerance
+/-1%
Resistance
20 mOhms
Composition
Metal Element
Power (Watts)
5W
Package / Case
Radial
Size / Dimension
0.800" L x 0.065" W (20.32mm x 1.65mm)
Height - Seated (Max)
0.882" (22.40mm)
Operating Temperature
-40degC ~ 125degC
Number of Terminations
2
Temperature Coefficient
+/-20ppm/degC
