7492540200

Current Sense Transformers Overview

The Würth Elektronik 7492540200 is a WE-CST series surface mount current sense transformer designed for high-frequency applications. It features a 1:200 turns ratio and an inductance of 22.4 mH. The component supports a maximum primary current of 40 A and operates within a frequency range starting at 1 MHz. It has a low DC resistance of 0.28 mOhm and a maximum operating temperature of +130°C. The package dimensions include a height of 10.5 mm, suitable for compact PCB layouts.

Current Sense Transformers Feature Summary

• Surface mount construction for automated assembly
• High isolation capability via transformer design
• Low insertion loss with minimal DC resistance
• Wide operating temperature range up to 130°C

Current Sense Transformers Applications

• Current sensing in switch-mode power supplies
• Overcurrent protection circuits
• Isolated feedback loops in motor drives
• Battery management systems requiring galvanic isolation

Current Sense Transformers Procurement Notes

Verify the specific lot code and manufacturing date against project requirements. Confirm that the 10.5 mm height fits within the mechanical envelope constraints. Ensure soldering profiles comply with surface mount thermal limits. Cross-reference the 1:200 ratio with system gain calculations before finalizing orders.

Current Sense Transformers Selection Notes

Choose this component when galvanic isolation between primary and secondary sides is mandatory. The 40 A rating suits medium-power industrial applications. Consider the 1 MHz lower frequency limit for switching regulators. Evaluate the 22.4 mH inductance against required bandwidth. Compare physical footprint against available board space.

Current Sense Transformers Part Context

This part belongs to the WE-CST family of current sense transformers from Würth Elektronik. These components are engineered for precision current monitoring in electrically noisy environments. The series emphasizes reliability and thermal stability for demanding industrial and automotive electronics.

Current Sense Transformers Replacement Considerations

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