ECST1V0504-1040-R

Overview

The ECST1V0504-1040-R is a surface-mount current sense transformer from the Eaton ECST series. It features a 40:1 turns ratio and supports primary currents up to 7 A. The device operates within a frequency range of 50 kHz to 1 MHz. Key electrical parameters include a maximum inductance of 132 µH, a primary resistance of 3 mΩ, and a secondary resistance of 1.6 Ω. It is designed for board-mounted applications with an operating temperature range of -40°C to +125°C.

Feature Summary

• Provides galvanic isolation between primary and secondary circuits for accurate current monitoring
• Optimized for high-frequency operation suitable for switching power supply applications
• Compact surface-mount package facilitates automated assembly and space-constrained designs

Applications

• Current sensing in DC-DC converters
• Overcurrent protection circuits
• Power supply feedback loops

Procurement Notes

Verify the specific suffix and manufacturer part number against official Eaton documentation to ensure correct component identification. Confirm that the required electrical specifications, such as the 40:1 ratio and 7 A rating, align with the target circuit design requirements before procurement.

Selection Notes

Select this component when a compact, high-isolation current transformer is needed for frequencies above 50 kHz. Ensure the primary current does not exceed 7 A and that the PCB layout accommodates the specified surface-mount footprint and thermal constraints.

Part Context

This part belongs to the ECST series of current sense transformers manufactured by Eaton Electronics Division. These components are engineered for reliable performance in electronic circuits requiring precise current measurement and isolation.

Replacement Considerations

Consult Eaton's official cross-reference documentation or distributor databases for verified substitute part numbers. Do not assume functional compatibility with other manufacturers' parts without verifying electrical parameters and pin configurations.