7492540050

Current Sense Transformers Overview

The Würth Elektronik 7492540050 is a surface-mount current sense transformer from the WE-CST series. It features a 1:50 turns ratio and supports up to 40 A primary current. The device has an inductance of 1.4 mH and operates at frequencies up to 1 MHz. Primary resistance is 0.28 mOhm, while secondary resistance is 202 mOhm. It utilizes an EE13/7/4 core configuration and is designed for board mounting with SMD/SMT installation style.

Current Sense Transformers Feature Summary

• Provides galvanic isolation between primary and secondary circuits for accurate current monitoring
• Engineered for high-frequency operation up to 1 MHz with low impedance characteristics
• Designed for surface mount technology (SMT) integration using the WE-CST form factor

Current Sense Transformers Applications

• Current sensing in switching power supplies
• Overcurrent protection circuits
• Closed-loop control systems for DC-DC converters

Current Sense Transformers Procurement Notes

Verify the specific package dimensions and pinout configuration against your PCB footprint requirements before ordering. Confirm that the thermal management capabilities align with your system's operating temperature range, as the maximum operating temperature reaches +130°C. Ensure that the 1:50 turns ratio meets the signal conditioning needs of your downstream analog-to-digital converter or comparator circuitry. Cross-reference the lead time and availability with authorized distributors to prevent production delays.

Current Sense Transformers Selection Notes

Select this component when a compact, surface-mount solution is required for high-current sensing applications. The 1:50 ratio offers a balance between signal amplification and bandwidth for typical switching frequencies. Consider the physical size constraints of the EE13/7/4 package relative to available board space. Evaluate the primary and secondary resistance values to ensure they do not introduce excessive loss or voltage drop in your specific circuit topology compared to alternative transformers in the WE-CST family.

Current Sense Transformers Part Context

This part belongs to the WE-CST series of current sense transformers manufactured by Würth Elektronik. These components are designed to replace bulky traditional current transformers in modern electronic designs. The series emphasizes small form factors suitable for dense PCB layouts while maintaining electrical isolation standards. The 7492540050 specifically targets applications requiring robust performance under high current loads with precise frequency response.

Current Sense Transformers Replacement Considerations

Check the 7492550500 datasheet for potential substitution options within the same manufacturer's portfolio. Verify that any alternative part number matches the critical parameters of 1:50 ratio, 40 A rating, and 1.4 mH inductance. Ensure compatibility with existing assembly processes and mechanical constraints before implementing a change.