7492540020

Current Sense Transformers Overview

The Würth Elektronik 7492540020 is a WE-CST current sense transformer designed for surface mount applications. It features a 1:20 turns ratio and supports a primary current of 40 A. The component operates at frequencies up to 1 MHz, with a primary inductance of 224 µH. Electrical resistance values are specified as 0.28 mOhm for the primary winding and 33 mOhm for the secondary winding. The physical construction utilizes an EE13/7/4 core configuration.

Current Sense Transformers Feature Summary

• Integrated magnetic core structure for board-mount installation
• High-frequency operation capability suitable for switching power supplies
• Defined current sensing ratio for accurate signal isolation

Current Sense Transformers Applications

• Current monitoring in DC-DC converters
• Power supply circuit protection systems
• Battery management system sensing

Current Sense Transformers Procurement Notes

Verify the specific package orientation and pinout configuration against the official datasheet before integration. Confirm that the thermal requirements of the application environment remain within the operational limits defined by the manufacturer. Ensure that the PCB footprint matches the recommended land pattern to guarantee reliable soldering and mechanical stability during assembly processes.

Current Sense Transformers Selection Notes

Select this component when a compact surface mount solution is required for high-current sensing applications. The 1:20 ratio provides a balance between signal amplitude and isolation requirements. Consider the low primary resistance for minimal insertion loss in the main power path. Evaluate the 1 MHz frequency limit to ensure compatibility with the switching regulator's operating speed.

Current Sense Transformers Part Context

This part belongs to the WE-CST series of current sense transformers from Würth Elektronik. These components are engineered for isolated current measurement in modern electronic power systems. The series offers various ratios and current ratings to accommodate different design constraints while maintaining a small form factor suitable for dense PCB layouts.

Current Sense Transformers Replacement Considerations

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