ECST1V0805-1100-R

Overview

The ECST1V0805-1100-R is a board-mount current sense transformer from Eaton Electronics, designed for surface mount technology (SMT) applications. It features a primary current rating of 10 A and a turns ratio of 1:100. The component exhibits an inductance of 2 mH with a maximum value, a primary DC resistance of 0.7 mΩ, and a secondary DC resistance of 5.5 Ω. 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, housed in an EE5.0 SMD package.

Feature Summary

• Surface mount construction with EE5.0 footprint for automated PCB assembly
• AEC-Q200 qualification ensuring reliability for automotive electronic environments
• High-frequency operation capability spanning 50 kHz to 1 MHz
• Low primary DC resistance to minimize insertion loss in high-current paths

Applications

• Automotive power management circuit monitoring
• Electric vehicle battery management systems
• On-board charger current sensing
• DC-DC converter feedback loops

Procurement Notes

Verify that the specific part number suffix matches the required electrical parameters, particularly the inductance and resistance values, as variations exist within the series. Confirm that the manufacturing source is authorized by Eaton Electronics to ensure compliance with AEC-Q200 standards. Check for moisture sensitivity level requirements during storage and handling prior to soldering. Ensure the ordering quantity aligns with the available reel or cut tape packaging options provided by the distributor.

Selection Notes

Select this component when a 10 A primary current rating and a 1:100 transformation ratio are required for high-frequency AC current sensing. The low primary resistance makes it suitable for minimizing voltage drop in power traces. Consider the 5.5 Ω secondary resistance when designing the burden resistor network to ensure proper signal amplitude for downstream ADCs or comparators. The wide operating temperature range supports deployment in harsh thermal environments typical of automotive chassis applications.

Part Context

This device belongs to the ECSTA/ECST series of current sense transformers manufactured by Eaton Electronics. These components are engineered specifically for space-constrained surface mount designs where traditional through-hole transformers are impractical. The series provides various inductance and resistance combinations to suit different bandwidth and sensitivity requirements while maintaining automotive-grade durability.

Replacement Considerations

Direct substitutes include other Eaton ECSTA1V0805-1100-R variants if available, though cross-manufacturer replacements require careful verification of pinout compatibility, inductance tolerance, and saturation current characteristics to maintain circuit stability.