ECST1V0504-1020-R

Overview

The ECST1V0504-1020-R is a board-mount current sense transformer from Eaton Electronics, designed for surface mount technology (SMT) applications. It features a primary rated current of 7 A and a turns ratio of 20:1. The component operates within a frequency range of 50 kHz to 1 MHz. Key electrical specifications include a primary inductance of 33 µH, a primary DC resistance of 3 mΩ, and a secondary DC resistance of 0.35 Ω. The device utilizes an EE4.4 SMT package with dimensions of 4.8 mm x 3.65 mm x 3.55 mm.

Feature Summary

• Surface mount construction utilizing the compact EE4.4 package format
• Low DC resistance characteristics for both primary and secondary windings
• Wide selection of available turns ratios within the series

Applications

• AC current measurement and monitoring in electronic circuits
• Power supply feedback loops requiring isolated current sensing
• Motor control systems for phase current detection

Procurement Notes

Verify the specific suffix against the official Eaton datasheet to confirm the exact turns ratio and electrical parameters, as variations exist within the ECST1V0504 family. Ensure the procurement order matches the required operating temperature range of -40°C to +125°C. Confirm that the surface mount footprint aligns with the PCB design guidelines provided in the component documentation before finalizing the purchase.

Selection Notes

Select this component when a 7 A primary current rating and a 20:1 transformation ratio are required for high-frequency operation up to 1 MHz. The choice is driven by the need for low profile SMT integration and minimal insertion loss due to low winding resistance. Consider the physical dimensions of the EE4.4 package to ensure compatibility with the target assembly space and automated placement equipment capabilities.

Part Context

This part belongs to the ECST series of current sense transformers manufactured by Eaton Electronics. The series is characterized by its suitability for board-mount applications and its ability to provide accurate current sensing in power electronics. The ECST1V0504 variant specifically denotes the package style and core geometry, while the suffix indicates the specific electrical configuration.

Replacement Considerations

Direct substitutes within the same Eaton family include ECST1V0504-1030-R and ECST1V0504-1050-R, which share the same physical footprint but offer different turns ratios of 30:1 and 50:1 respectively. Cross-manufacturer replacements require careful verification of pinout compatibility, inductance values, and saturation current limits.