CT433-HSWF20MR

Current Sensors Overview

The Allegro MicroSystems CT433-HSWF20MR is a board-mount current sensor utilizing XtremeSense Crocus magnetoresistive technology. It provides bidirectional current sensing with a 20A detection range and a single channel output. The device features a voltage ratio output with 15.4mV/A sensitivity, operating on a 3V to 3.6V supply. It offers high precision of ±0.5% accuracy and ±0.2% linearity within a -40°C to 125°C temperature range. Packaged in a 16-SOIC surface-mount case, it supports DC to 1MHz frequency response.

Current Sensors Feature Summary

• Utilizes XtremeSense Crocus magnetoresistive technology for precise current measurement
• Provides bidirectional sensing capability for both AC and DC applications
• Features ultra-fast response time of approximately 300 nanoseconds
• Delivers voltage ratio output compatible with standard microcontroller interfaces

Current Sensors Applications

• Dynamic current monitoring in power systems
• Current sensing in motor control circuits
• Protection mechanisms in power distribution units
• Battery management system current tracking

Current Sensors Procurement Notes

Verify the specific suffix configuration against official Allegro MicroSystems documentation to ensure correct package type and electrical characteristics. Confirm that the 16-SOIC footprint matches your PCB layout requirements. Cross-reference the sensitivity value of 15.4mV/A with your signal conditioning circuit design to ensure adequate resolution. Ensure supply voltage constraints between 3V and 3.6V are strictly maintained during operation.

Current Sensors Selection Notes

Select this component when bidirectional current sensing is required with high bandwidth up to 1MHz. The 20A rating suits moderate current applications where ±0.5% accuracy is critical. Consider the 16-SOIC package for surface-mount assembly needs. Evaluate the 300ns response time against your system's dynamic load requirements. Compare sensitivity levels against other models in the CT433 series to match signal processing capabilities.

Current Sensors Part Context

The CT433-HSWF20MR belongs to the Allegro MicroSystems XtremeSense Crocus family of magnetoresistive sensors. This series integrates advanced TMR technology to provide superior performance over traditional Hall-effect devices. The CT433 series is designed for high-precision current sensing applications requiring fast response times and low power consumption. Variants within the series differ primarily by current rating and packaging options.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by matching the 16-SOIC package dimensions and 15.4mV/A sensitivity. Check if alternative CT433 variants meet the 20A current requirement and bidirectional functionality.