ECST1V0703-1150-R

Overview

The ECST1V0703-1150-R is a surface-mount current sense transformer from Eaton Electronics. It features a primary current rating of 9 A and a turns ratio of 150:1. The device operates within a frequency range of 50 kHz to 1 MHz. Electrical characteristics include a maximum primary DC resistance of 1.5 mOhm, a maximum secondary DC resistance of 22.3 Ohm, and a minimum inductance of 2.99 mH. The component supports an operating temperature range from -40 C to +125 C.

Feature Summary

• Surface-mount construction for automated assembly integration
• High primary current handling capability up to 9 A
• Wide operational frequency bandwidth supporting high-speed switching applications

Applications

• Current sensing in power supply circuits
• Protection mechanisms in motor drive systems
• Feedback control loops in switching mode power converters

Procurement Notes

Verify the specific suffix designation against official Eaton documentation to confirm the exact turns ratio and electrical parameters. Ensure the procurement channel provides valid RoHS compliance certificates. Confirm that the delivered units match the specified surface-mount package dimensions and terminal configuration for proper PCB footprint compatibility.

Selection Notes

Select this component when a 9 A primary current rating and 150:1 transformation ratio are required. The wide frequency range suits high-frequency switching environments. Consider the low primary resistance for minimal insertion loss. Evaluate thermal management requirements given the 125 C maximum operating limit and surface-mount form factor constraints.

Part Context

This part belongs to the ECST series of current sense transformers designed for surface-mount technology. The series offers various turn ratios and current ratings to accommodate different power electronics designs. Eaton Electronics manufactures these components to provide precise current monitoring solutions with compact footprints suitable for modern dense circuit board layouts.

Replacement Considerations

Consult official Eaton cross-reference lists for verified substitutes. Direct replacements must maintain identical 9 A rating, 150:1 ratio, and SMD package dimensions. Verify that alternative parts meet the same 50 kHz to 1 MHz frequency specifications and thermal performance criteria.