ACS71240KEXBLT-045B5

Current Sensors Overview

The ACS71240KEXBLT-045B5 is a board-mount current sensor from Allegro MicroSystems, rated for 45A with bidirectional operation. It utilizes open-loop Hall effect technology to measure AC and DC currents. The device features a sensitivity of 44.4mV/A, a frequency response of 120kHz, and a linear accuracy of ±1%. Supply voltage ranges from 3V to 3.6V, with a maximum supply current of 12mA. It operates within a temperature range of -40°C to 150°C and includes common mode rejection capabilities.

Current Sensors Feature Summary

• Integrated common mode rejection for improved signal integrity in noisy environments
• Bidirectional measurement capability for both positive and negative current flow
• High thermal stability supporting extended operating temperatures up to 150°C

Current Sensors Applications

• Industrial motor control systems
• Power supply monitoring circuits
• Battery management systems

Current Sensors Procurement Notes

Verify the specific suffix B5 against official datasheets to confirm the 45A rating and package configuration. Ensure compatibility with 3V to 3.6V logic levels. Confirm that the 12-PowerWFQFN footprint matches the PCB layout requirements. Check for AEC-Q100 qualification if automotive compliance is required.

Current Sensors Selection Notes

Select this component when high current capacity up to 45A is necessary alongside precise bidirectional sensing. The integrated Hall effect design provides galvanic isolation between the current path and the output signal. Consider the 120kHz bandwidth for applications requiring fast transient detection.

Current Sensors Part Context

This part belongs to the ACS71240 series, which represents Allegro's advanced magnetic current sensors. The series emphasizes robustness and precision for demanding industrial applications. The KEXBLT suffix indicates a specific tape and reel packaging format suitable for automated surface mount assembly processes.

Current Sensors Replacement Considerations

Direct substitutes include other variants within the ACS71240 family, such as ACS71240KEXBLT-010B3 or ACS71240KEXBLT-030B3, provided the current rating difference is acceptable. Cross-reference pinouts and sensitivity values before substitution.