749251070

Current Sense Transformers Overview

The Würth Elektronik 749251070 is a surface-mount current sense transformer from the WE-CST series, designed for precise primary current measurement. It features a 1:70 turns ratio and supports up to 10 A primary current. Key electrical parameters include 980 µH inductance, 35 Vµs volt-second rating, 6 mΩ primary DC resistance, and 2.2 Ω secondary DC resistance. The component measures 7.70 mm x 6.90 mm with a maximum height of 5.33 mm.

Current Sense Transformers Feature Summary

• Provides galvanic isolation between primary and secondary circuits for accurate current monitoring
• Optimized for surface-mount assembly with鸥翼 (gull-wing) termination style
• Engineered for high-frequency operation within switching power supply environments

Current Sense Transformers Applications

• Current sensing in AC-DC converters
• Monitoring in offline flyback converter topologies
• Power management systems requiring isolated feedback

Current Sense Transformers Procurement Notes

Verify the specific manufacturer part number against official datasheets to ensure compatibility with design requirements. Confirm that the 1:70 ratio and 10 A rating align with the target application's electrical specifications. Check RoHS compliance status and moisture sensitivity level before integration into the production workflow.

Current Sense Transformers Selection Notes

Select this component when isolated current measurement is required in compact designs. The 1:70 ratio suits applications needing scaled-down secondary signals. Ensure the PCB layout accommodates the 7.70 mm x 6.90 mm footprint and gull-wing leads. Validate thermal performance within the -40°C to 125°C operating range.

Current Sense Transformers Part Context

This part belongs to the WE-CST series of current sense transformers by Würth Elektronik. These components are engineered for board-mount applications, offering reliable performance in power electronics. The series provides various ratios and ratings to support diverse current sensing needs across different converter architectures.

Current Sense Transformers Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.