HLSR 32-SM/SP33

Current Sensors Overview

The HLSR 32-SM/SP33 is a Hall effect current sensor from the HLSR-SM series, designed for electronic measurement of DC, AC, and pulsed currents with galvanic isolation. It features a nominal primary current of 32 A RMS and a measuring range up to 80 A (2.5 x Ipn). The device utilizes a single +3.3 V supply and provides a voltage output of 1.65 ± 0.46 V at nominal current. Key specifications include an accuracy of ±1% at 25°C and ±3.4% at 105°C, a short response time of 2.5 µs, and an operating temperature range of -40°C to +105°C.

Current Sensors Feature Summary

• Galvanic separation between primary and secondary circuits using open-loop Hall effect technology
• Compact surface-mount design occupying only 3.87 cm² on the PCB with a height of 12 mm
• High accuracy performance with low offset and gain drift characteristics
• Single supply operation compatible with +3.3 V or +5 V power sources

Current Sensors Applications

• Power electronics drive systems
• Renewable energy applications
• Welding equipment control
• General power supply monitoring

Current Sensors Procurement Notes

Verify the specific suffix SM/SP33 confirms the surface-mount package and 3.3V supply requirement. Ensure the order matches the 32A nominal rating. Confirm the manufacturer is LEM USA Inc. Check for updated datasheets regarding insulation distances and creepage clearance requirements before finalizing procurement.

Current Sensors Selection Notes

Select this component when a compact, high-accuracy current sensor with galvanic isolation is required for DC, AC, or pulsed current measurement. Consider the 3.3V supply constraint and the 2.5 µs response time for dynamic applications. Evaluate the thermal performance within the -40°C to +105°C range against system operating conditions.

Current Sensors Part Context

This part belongs to the HLSR-SM series of Hall effect current sensors. The series offers multiple ranges including 10, 20, 32, 40, and 50 ARMS. The HLSR 32-SM/SP33 specifically denotes the 32A nominal variant with surface-mount mounting and 3.3V supply configuration, sharing the same compact footprint and technical architecture as other models in the family.

Current Sensors Replacement Considerations

Direct substitutes within the same series include HLSR 10-SM/SP33, HLSR 20-SM/SP33, HLSR 40-SM/SP33, and HLSR 50-SM/SP33, which share identical packaging and interface characteristics but differ in nominal current ratings.