ECST1V0805-1125-R

Overview

The ECST1V0805-1125-R is a surface-mount current sense transformer from Eaton Electronics, designed for board-level integration. It features a turns ratio of 1:125 and an inductance of 3000 uH. The device supports a primary current rating of 10 A with a primary resistance of 0.7 mOhms and a secondary resistance of 11.5 Ohms. Operating within a frequency range of 50 kHz to 1 MHz, it utilizes SMD/SMT termination. Physical dimensions are 8.38 mm in length, 8 mm in width, and 5.5 mm in height. The component functions reliably across temperatures from -40 C to +125 C.

Feature Summary

• Surface-mount construction for automated PCB assembly
• High isolation current sensing capability
• Wide operating temperature range for industrial environments

Applications

• Switch-mode power supply output current monitoring
• Battery management system current measurement
• Industrial motor drive protection circuits

Procurement Notes

Verify the specific suffix matches the required turns ratio and inductance values. Confirm that the surface-mount package dimensions align with the target PCB footprint. Ensure the operating frequency range covers the application's switching speed. Check thermal ratings against peak load conditions. Validate compliance with relevant safety standards for the end product.

Selection Notes

Select this component when high accuracy at elevated frequencies is required. The 1:125 ratio suits applications needing significant signal amplification. Consider the low primary impedance for minimal circuit insertion loss. Evaluate the secondary resistance impact on downstream amplifier loading. Ensure the physical size fits within constrained board areas.

Part Context

This part belongs to the ECST series of current transformers by Eaton Electronics. These components are engineered for precise current monitoring in compact electronic designs. The series offers various ratios to accommodate different sensing requirements. They are commonly used in modern power electronics where space efficiency and reliability are critical.

Replacement Considerations

ECST1V0805-1020-R