749252050

Current Sense Transformers Overview

The Würth Elektronik 749252050 is a surface-mount current sense transformer from the WE-CST series. It features a 1:50 turns ratio and an inductance of 205 µH. The component supports a maximum primary current of 7 A with a primary DC resistance of 3 mΩ and a secondary DC resistance of 2.5 Ω. It operates at frequencies up to 1 MHz and has a rated voltage-time product of 22.5 Vµs.

Current Sense Transformers Feature Summary

• Integrated magnetic core design for compact surface-mount implementation
• High isolation capability between primary and secondary windings
• Optimized low impedance characteristics for efficient power monitoring

Current Sense Transformers Applications

• Primary side current sensing in AC/DC converters
• Current monitoring in offline switching power supplies
• Protection circuits in industrial power systems

Current Sense Transformers Procurement Notes

Verify the specific manufacturer part number against official Wurth Elektronik documentation to ensure authenticity. Confirm that the component matches the required electrical specifications, including the 1:50 ratio and 205 µH inductance, before integration into the design.

Current Sense Transformers Selection Notes

Select this component when a surface-mount solution is required for primary-side current sensing in high-frequency applications. Ensure the PCB layout accommodates the specified footprint and that the thermal environment remains within operational limits for reliable performance.

Current Sense Transformers Part Context

This component belongs to the WE-CST series of current sense transformers manufactured by Würth Elektronik. These devices are designed for use in power electronics where accurate current measurement and galvanic isolation are critical requirements for system safety and control.

Current Sense Transformers Replacement Considerations

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