ECST1V0703-1100-R

Overview

The ECST1V0703-1100-R is a surface-mount current sense transformer from Eaton Electronics, designed for board-level integration. It features a 100:1 turns ratio and supports a primary current rating of 9 A. The component operates within a frequency range of 50 kHz to 1 MHz. Key electrical specifications include a maximum inductance of 1.33 mH, a primary resistance of 1.5 mOhms, and a secondary resistance of 10.68 Ohms. The device utilizes J-lead termination for SMD/SMT mounting and measures 7.2 mm x 5.2 mm x 3.0 mm.

Feature Summary

• Surface-mount design with J-lead termination for automated PCB assembly
• High-frequency operation capability up to 1 MHz for precise signal sensing
• Shielded construction to minimize electromagnetic interference

Applications

• Current sensing in switching power supplies
• Overcurrent protection circuits
• Power management systems requiring isolated current feedback

Procurement Notes

Verify the specific suffix and packaging configuration against the manufacturer's latest documentation before ordering. Confirm that the required operating temperature range aligns with the specified -40 C to +125 C limits. Ensure PCB footprint compatibility with the 7.2 mm x 5.2 mm dimensions and J-lead pitch. Cross-reference the part number with authorized distributors to guarantee authenticity and traceability.

Selection Notes

Select this component when a compact, high-frequency current transformer is required for board-mounted applications. The 100:1 ratio suits applications needing scaled-down current signals for monitoring or control loops. Consider the low primary resistance for minimal insertion loss and the robust secondary resistance for driving downstream sensing circuitry effectively.

Part Context

This part belongs to the ECST series of current sense transformers by Eaton Electronics. These components are engineered for high-reliability electronic systems where accurate current measurement is critical. The series offers various ratios and current ratings to accommodate diverse power electronics designs.

Replacement Considerations

Consult Eaton Electronics official substitution guides for verified alternatives. Ensure any replacement matches the 100:1 ratio, 9 A rating, and 50 kHz-1 MHz frequency range while maintaining compatible physical dimensions.