ECST1V0703-1020-R

Overview

The ECST1V0703-1020-R is a surface-mount current sense transformer manufactured by Eaton Electronics. It features a primary current rating of 9 A and a turns ratio of 20:1. The component operates within a frequency range of 50 kHz to 1 MHz. Electrical specifications include a maximum inductance of 53 µH, a primary resistance of 1.5 mΩ, and a secondary resistance of 420 mΩ. The device is designed for PCB mounting with dimensions of 7.2 mm length, 5.2 mm width, and 3 mm height.

Feature Summary

• Surface-mount construction optimized for automated PCB assembly processes
• High precision current sensing capability with defined 20:1 turns ratio
• Wide operational frequency bandwidth supporting high-speed switching applications

Applications

• Current monitoring in switch-mode power supplies
• Overcurrent protection circuits in automotive electronics
• Feedback loop sensing in DC-DC converter topologies

Procurement Notes

Verify the manufacturer part number against official Eaton documentation to ensure authenticity. Confirm that the specific suffix matches the required electrical parameters and packaging format. Check for AEC-Q certification requirements if deploying in automotive environments. Ensure storage conditions comply with moisture sensitivity levels specified in the datasheet prior to soldering.

Selection Notes

Select this component when a compact surface-mount solution is required for high-frequency current sensing. The 20:1 ratio suits applications needing significant signal isolation between primary and secondary sides. Consider the 9 A primary rating limit and 53 µH maximum inductance for circuit compatibility. Evaluate the low primary resistance to minimize insertion loss in high-current paths.

Part Context

This component belongs to Eaton's SMT current sense transformer series, designed for space-constrained electronic designs. It provides galvanic isolation while maintaining accurate current replication. The series supports various turn ratios and current ratings to accommodate different power management architectures. The specific model targets applications requiring reliable performance in both industrial and automotive sectors.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Cross-referencing requires matching the 20:1 ratio, 9 A rating, and 53 µH inductance limits. Verify footprint compatibility and thermal characteristics before considering alternative manufacturers.