750311457

Overview

The Würth Elektronik 750311457 is a surface-mount flyback transformer designed for DC/DC converter applications within the WE-FB series. It features a primary voltage rating of 36V and an isolation voltage of 2500Vrms. The component operates at a frequency of 100kHz with an inductance of 50µH measured at 10kHz. It supports a secondary voltage of 5V and provides a current rating of 4A. The device is suitable for operation between -40°C and +125°C, with maximum dimensions of 13.46mm x 17.75mm x 12.83mm.

Feature Summary

• Designed specifically for flyback converter topologies in switch-mode power supplies
• Provides high electrical isolation capability rated at 2500Vrms
• Optimized for use with Linear Technology controller families including LT3573, LT3574, LT3575, and LT3748

Applications

• Flyback converter circuits
• DC/DC conversion systems
• Switch-mode power supply (SMPS) designs

Procurement Notes

Verify that the specific part number matches the required electrical specifications for your design, particularly the 50µH inductance and 2500Vrms isolation rating. Confirm compatibility with the intended controller ICs from Linear Technology. Ensure the surface mount package dimensions fit within your PCB layout constraints. Check for any recent product change notifications regarding marking or packaging updates before finalizing orders.

Selection Notes

Select this component when designing flyback converters requiring 36V primary input and 5V output. It is appropriate for applications utilizing LT3573, LT3574, LT3575, or LT3748 controllers. Consider the 100kHz operating frequency and 4A current rating to ensure it meets the power requirements. Verify thermal performance within the -40°C to +125°C range for your specific environment.

Part Context

This component belongs to the Würth Elektronik WE-FB series, which consists of flyback transformers tailored for specific controller families. The series is engineered to simplify the design process by providing pre-optimized magnetic components that match the characteristics of popular switching regulators. This ensures reliable performance and reduces development time for engineers implementing these specific control architectures.

Replacement Considerations

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