LA37S300S05KM

Current Sensors Overview

The LA37S300S05KM is a board-mount current sensor from Tamura, designed for open-loop measurement with a 300 A rated current. It operates on a unipolar +5 V supply (4.5 V to 5.5 V) and provides a ratiometric output. Key electrical specifications include a response time of 3.5 µs and an accuracy of 1.8%. The device functions within a temperature range of -40 °C to +105 °C. Physical dimensions are 40 mm in length, 30 mm in width, and 18.5 mm in height.

Current Sensors Feature Summary

• Open-loop Hall effect technology for single pass-through current sensing
• Ratiometric analog output compatible with standard signal processing circuits
• High thermal stability supporting operation up to +105 °C
• Compact board-mount form factor suitable for space-constrained designs

Current Sensors Applications

• Medium-power general-purpose inverters
• Automotive power management systems
• Industrial motor control drives

Current Sensors Procurement Notes

Verify the specific suffix 'KM' against the manufacturer's latest datasheet to confirm pinout and mechanical tolerances. Ensure the application circuit supports the required +5 V unipolar supply voltage. Confirm that the 300 A continuous rating aligns with peak load requirements. Check RoHS compliance documentation for regulatory adherence. Validate thermal dissipation capabilities given the +105 °C maximum operating temperature limit.

Current Sensors Selection Notes

Select this component when a 300 A capacity is required with a strict +5 V logic interface. The ratiometric output simplifies ADC interfacing by scaling with the supply voltage. Consider the 3.5 µs response time for dynamic load applications. Evaluate the physical footprint against available PCB real estate. Compare accuracy requirements against the 1.8 % specification to ensure measurement precision meets system needs.

Current Sensors Part Context

This part belongs to the LA37SxxxS05K series, which utilizes unipolar +5 V power supplies. It differs from the L37SxxxD15x variants that require bipolar ±15 V supplies. The S05K designation indicates the specific voltage configuration and output type. This family targets medium-power inverter applications requiring robust current feedback.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching the 300 A rating, +5 V supply, and ratiometric output characteristics. Verify mechanical compatibility if substituting with other Tamura models.