High Power Current Sense CSM2F Resistors for High Measurement Accuracy in Industrial Control Applications
Bourns has introduced nine new models to its AEC-Q200 compliant Model CSM2F High Power Current Sense Resistor Series that can deliver high measurement accuracy and relatively low cost compared to other technologies. With permanent power ratings of up to 50 watts, the new model CSM2F series features resistance values from as low as 25 microohms up to 200 microohms and continuous current up to 1414 amps, and high pulse power handling capabilities.
The new CSFM2F series is available in four different footprint sizes viz. 6918, 8518, 7036, and a new 8536 metric size, and includes two new terminal surface treatments (fully plated and bare copper). The new fully-plated models go through a tin-plating process after material stamping to create a protective layer that provides enhanced performance, long-term stability, and lower resistance drift after load life test benefits. The "bare-copper" version is constructed without tin-plating for enhanced TCR performance, and the copper terminals are covered with a protective layer to help extend resistor lifespan.
The new series is treated using electron beam (E-Beam) welded resistive copper alloy where the metal alloy current sensing element provides thermal EMF as low as 0.25µV/K and a low TCR of 50 PPM/°C in the 20 °C to 60 °C temperature range. The expanded series of resistors were designed to deliver efficient, reliable, cost-effective, and accurate measurement solutions for the battery management system (BMS), industrial control, and other high current applications.
Features of CSFM2F series
- Up to 50 W permanent power
- Resistance: 25-200 Micro ohm
- Continuous current: Up to 1414A
- High pulse power rating
- Maximum fastening torque: 10 Nm
- AEC-Q200 compliant
- RoHS compliant / lead free
Note: More technical information can be found in the CSM2F-8536 Series Datasheet linked at the bottom of this page and on the product page of the AEC-Q200 compliant Model CSM2F High Power Current Sense Resistor.
