ECST1V0703-1050-R

Overview

The ECST1V0703-1050-R is a surface-mount current sense transformer from Eaton Electronics, designed for high-frequency applications. It features a turns ratio of 50:1 and an inductance of 333 µH. The device supports a maximum primary current of 9 A with a frequency range of 50 kHz to 1 MHz. Electrical characteristics include a primary DC resistance of 1.5 mΩ and a secondary DC resistance of 2.76 Ω. It operates within a temperature range of -40°C to +125°C and holds AEC-Q200 qualification.

Feature Summary

• Surface-mount package design optimized for automated PCB assembly processes
• AEC-Q200 qualified for automotive electronics reliability standards
• High-frequency operation capability spanning 50 kHz to 1 MHz

Applications

• Automotive power management systems
• Current sensing circuits in electric vehicle inverters
• DC-DC converter feedback loops
• Motor drive control architectures

Procurement Notes

Verify the specific suffix configuration against the official Eaton datasheet to ensure the correct turns ratio and electrical parameters match the design requirements. Confirm that the surface-mount footprint dimensions align with the target PCB layout. Ensure compliance with RoHS directives and AEC-Q200 automotive standards required for the intended application environment.

Selection Notes

Select this component when a 50:1 isolation ratio is required for high-current sensing up to 9 A. Consider the 333 µH inductance value for filtering requirements within the specified 50 kHz to 1 MHz bandwidth. Evaluate the thermal performance at +125°C maximum operating temperature to ensure stability under load conditions in automotive or industrial environments.

Part Context

This part belongs to the ECST series of current sense transformers manufactured by Eaton Electronics. The series provides shielded, surface-mount solutions for precise current measurement in power electronics. The 1V0703 designation indicates the specific physical package size and winding configuration within the product family.

Replacement Considerations

Consult Eaton's official cross-reference documentation for verified substitute part numbers. Alternative components must maintain the 50:1 turns ratio, 333 µH inductance, and compatible SMD footprint to ensure circuit compatibility without redesign.