7492540030

Current Sense Transformers Overview

The Würth Elektronik 7492540030 is a surface mount current sense transformer from the WE-CST series. It features a 1:30 turns ratio and supports a primary current of 40 A. The device operates at a frequency of 1 MHz with an inductance of 504 µH. Primary resistance is 0.28 mOhm, while secondary resistance is 93 mOhm. The component utilizes an EE13/7/4 core geometry for board mounting applications.

Current Sense Transformers Feature Summary

• Integrated magnetic coupling for isolated current sensing
• Surface mount construction for automated assembly
• High-frequency operation capability up to 1 MHz

Current Sense Transformers Applications

• Switching power supply output current monitoring
• Battery management system current detection
• Motor drive overcurrent protection circuits

Current Sense Transformers Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the selected variant matches the required electrical parameters for the target application circuit design.

Current Sense Transformers Selection Notes

Select this component based on the 40 A primary current rating and 1:30 transformation ratio requirements. Ensure the PCB layout accommodates the surface mount footprint and that the operating frequency aligns with the 1 MHz specification for optimal performance.

Current Sense Transformers Part Context

This part belongs to the WE-CST family of current sense transformers manufactured by Würth Elektronik. These components are designed to provide galvanic isolation between high-voltage primary circuits and low-voltage sensing electronics in modern power conversion systems.

Current Sense Transformers Replacement Considerations

Consult official substitution lists for equivalent current sense transformers with matching ratios and current ratings.