HO 50-S/SP33-1106

Current Sensors Overview

The HO 50-S/SP33-1106 is an open-loop Hall effect current sensor manufactured by LEM USA Inc. Designed for measuring DC, AC, and pulsed currents, it features a nominal primary current rating of 50 A with an extended range from -125 A to 125 A. The device provides a voltage output referenced to 3.3 Vdc supply, ensuring compatibility with standard logic levels. It exhibits a response time of 3.5 µs and maintains an accuracy of 1.25% at 25°C. The sensor operates within specified temperature ranges and requires a maximum supply current of 25 mA, making it suitable for precise current monitoring in power electronics applications.

Current Sensors Feature Summary

• Utilizes open-loop Hall effect technology for accurate measurement of AC, DC, and pulsed currents
• Provides a voltage output compatible with 3.3 Vdc supply systems
• Features a fast response time of 3.5 µs for dynamic current monitoring

Current Sensors Applications

• Power electronics current monitoring
• Inverter and converter control systems
• Battery management systems

Current Sensors Procurement Notes

Verify the specific ordering suffix SP33-1106 corresponds to the 3.3 V voltage output configuration. Confirm that the open-loop design meets the isolation and accuracy requirements for the target application. Ensure the operating temperature range aligns with the environmental conditions of the installation site. Cross-reference the datasheet revision to confirm no recent parameter changes affect system performance.

Current Sensors Selection Notes

Select this component when a compact, open-loop solution is required for currents up to 50 A. The 3.3 V output interface simplifies integration with microcontrollers and ADCs. Consider the 1.25% accuracy and 3.5 µs response time against system bandwidth needs. Evaluate the thermal performance and supply current constraints relative to the overall power budget of the design.

Current Sensors Part Context

This part belongs to the LEM HO Series, which includes various models for different current ratings and output types. The HO series is characterized by its board-mount form factor and use of Hall effect technology. Other variants in the series may offer different current ranges or output configurations, such as current outputs or higher precision levels, catering to diverse industrial and automotive applications.

Current Sensors Replacement Considerations

Public documentation indicates a transition from the HOxx-P- series to newer iterations. Verify if the HO 50-S/SP33-1106 is directly interchangeable with previous P-series parts or if pinout and electrical characteristics require validation. Check for any product change notices (PCN) regarding manufacturing updates or material substitutions.