ECSTA1V0805-1125-R

Overview

The ECSTA1V0805-1125-R is a surface-mount current sensing transformer from Eaton Electronics, designed for high-frequency applications. It features a turns ratio of 1:125 and supports a primary current rating of 10 A. The component exhibits an inductance of 3 mH (3000 uH) with a primary resistance of 0.7 ohms and a secondary resistance of 11.5 ohms. It operates within a frequency range of 50 kHz to 1 MHz and is qualified under the AEC-Q200 standard. The physical dimensions are 8.38 mm in length, 8 mm in width, and 5.5 mm in height, suitable for PCB mounting.

Feature Summary

• High isolation current sensing capability with a 1:125 turns ratio
• AEC-Q200 qualified for automotive reliability standards
• Surface-mount design optimized for automated assembly processes
• Operational stability across a wide temperature range

Applications

• Battery Management Systems (BMS)
• Automotive power electronics monitoring
• High-frequency current detection circuits
• Electric vehicle charging infrastructure

Procurement Notes

Verify that the specific part number matches the required 1:125 ratio and 3 mH inductance specifications. Confirm AEC-Q200 qualification status if automotive compliance is mandatory. Ensure the SMD package dimensions align with the target PCB footprint. Check for any specific handling or soldering restrictions mentioned in the official datasheet prior to integration.

Selection Notes

Select this component when a high turns ratio is necessary for precise low-current secondary measurement from a higher primary current. The 10 A primary rating and 3 mH inductance make it suitable for filtering and signal conditioning in switching power supplies. Consider the 50 kHz to 1 MHz operating bandwidth to ensure compatibility with the system's switching frequency.

Part Context

This model belongs to the ECSTA series of board-mounted current transformers by Eaton Electronics. These components are engineered for compact electronic designs requiring galvanic isolation between primary and secondary circuits. The series provides various ratios and inductance values to accommodate different sensing requirements in modern power management architectures.

Replacement Considerations

Direct substitutes must match the 1:125 ratio, 3 mH inductance, and 10 A primary current rating. Verify that alternative components maintain AEC-Q200 qualification and identical SMD package dimensions (8.38 x 8 x 5.5 mm). Ensure the replacement supports the same 50 kHz to 1 MHz frequency range.