HLSR 20-SM/SP33

Current Sensors Overview

The HLSR 20-SM/SP33 is a current transducer from the HLSR-SM series designed for electronic measurement of DC, AC, and pulsed currents. It features galvanic separation between primary and secondary circuits using open-loop Hall technology. The device operates with a supply voltage of 3.3V and has a maximum supply current of 25mA. It supports bidirectional current flow within a range of -50A to 50A, with a nominal primary current of 20A. Key electrical parameters include an accuracy of ±1%, linearity of ±0.5%, and a response time of 2.5µs. The operating frequency reaches 400kHz, and it functions within a temperature range of -40°C to 105°C.

Current Sensors Feature Summary

• Galvanic isolation between primary and secondary circuits
• Open-loop Hall sensor technology for high precision
• Bidirectional current measurement capability
• Fast response time suitable for dynamic applications

Current Sensors Applications

• Electronic measurement of DC currents
• Electronic measurement of AC currents
• Electronic measurement of pulsed currents

Current Sensors Procurement Notes

Verify the specific ordering suffix SP33 to confirm the 3.3V supply voltage requirement. Ensure the selected variant matches the required PCB footprint and pin configuration for the HLSR-SM series. Cross-reference the manufacturer's latest datasheet to confirm compliance with IEC standards and environmental specifications before finalizing procurement.

Current Sensors Selection Notes

Select this component when precise measurement of low to medium current levels (up to 20A nominal) is required in space-constrained designs. The 3.3V supply compatibility makes it suitable for modern digital systems. Consider the ±1% accuracy and 2.5µs response time for applications demanding fast transient detection and reliable feedback control loops.

Current Sensors Part Context

This part belongs to the HLSR-SM series of current sensors manufactured by LEM USA Inc. These sensors are characterized by their compact size and suitability for surface-mount or PCB integration. The series utilizes Hall effect technology to provide isolated current sensing solutions for various industrial and consumer electronics applications.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement guide for equivalent models within the HLSR family or other LEM current sensor series that meet similar electrical and mechanical requirements.