7492540100

Current Sense Transformers Overview

The Würth Elektronik 7492540100 is a WE-CST series surface mount current sense transformer designed for high-frequency applications. It features an EE13/7/4 core configuration with a 1:100 turns ratio and a primary current rating of 40 A. The component exhibits a maximum inductance of 5.6 mH and operates within a frequency range starting at 1 MHz. Electrical resistance values are specified as 0.28 mOhm for the primary winding and 805 mOhm for the secondary winding. The device supports a maximum operating temperature of +130°C and provides precise current sensing capabilities.

Current Sense Transformers Feature Summary

• Surface mount construction utilizing an EE13/7/4 core geometry
• High isolation capability inherent to transformer topology
• Optimized for high-frequency signal integrity

Current Sense Transformers Applications

• Current monitoring in switching power supplies
• Overcurrent protection circuits
• Battery management systems

Current Sense Transformers Procurement Notes

Verify that the specific package dimensions align with the PCB footprint requirements, as surface mount components require precise solder paste application. Confirm thermal management strategies are adequate for the +130°C maximum operating temperature rating to ensure long-term reliability under continuous load conditions.

Current Sense Transformers Selection Notes

Select this component when a high turns ratio of 1:100 is required to step down primary currents for safe sensing by low-voltage control ICs. The 40 A rating suits medium-to-high power stages, while the 1 MHz minimum frequency ensures compatibility with modern high-speed switching regulators.

Current Sense Transformers Part Context

This part belongs to the WE-CST family of current sense transformers from Würth Elektronik. These components are engineered to replace traditional shunt resistors in applications where power loss and heat dissipation must be minimized while maintaining accurate current feedback across a wide frequency spectrum.

Current Sense Transformers Replacement Considerations

No public confirmed substitute part numbers are available.