750311458

Overview

The Würth Elektronik 750311458 is a flyback transformer designed for DC/DC converters, specifically optimized for LT3748 and LT3575 controller architectures. It features an inductance of 15µH and provides 2500Vrms isolation voltage. The component supports a maximum output voltage of 3.3V and has a DC resistance of 0.035 ohms. It is available in cut tape packaging and is currently in active production status.

Feature Summary

• High isolation voltage capability of 2500Vrms for enhanced safety
• Optimized design for specific linear technology controller families
• Surface mount construction for automated assembly

Applications

• Flyback converter circuits using LT3748 controllers
• Power supply designs utilizing LT3575 controllers
• Isolated DC/DC conversion modules requiring high voltage isolation

Procurement Notes

Verify the specific datasheet version when ordering, as component specifications may be subject to engineering change notices. Confirm that the required isolation voltage and inductance values align with the target circuit design before finalizing procurement. Ensure compatibility with the intended controller IC family.

Selection Notes

Select this component only if the application requires 2500Vrms isolation and utilizes LT3748 or LT3575 control logic. Evaluate the thermal performance requirements against the 15µH inductance specification. Consider the physical footprint constraints relative to the surface mount package dimensions provided in the official documentation.

Part Context

This part belongs to the WE-FB series of flyback transformers from Würth Elektronik. These components are engineered for high-reliability power conversion applications. The series emphasizes compact form factors while maintaining robust electrical isolation standards suitable for industrial and commercial power supplies.

Replacement Considerations

Direct substitutes must match the 15µH inductance, 2500Vrms isolation rating, and pinout configuration. Verify compatibility with LT3748/LT3575 drivers. Generic flyback transformers may not provide equivalent magnetic coupling characteristics for these specific controllers.

FAQ

What is the primary isolation voltage rating?

The component provides 2500Vrms isolation between primary and secondary windings.

Which controller families is this transformer optimized for?

It is specifically designed for use with LT3748 and LT3575 controller ICs.