750311911

Switching Converter, SMPS Transformers Overview

The Würth Elektronik 750311911 is a board-mount flyback transformer from the WE-FB LT3748 series. It features a single primary winding and dual secondary windings, designed for surface mount (SMD/SMT) applications. The component has a power rating of 12 W with an inductance of 6.78 uH. Electrical specifications include a primary voltage rating of 28 V and a secondary voltage rating of 250 V. The secondary current rating is 100 mA. Physical dimensions are 27.03 mm in length, 32.31 mm in width, and 13.69 mm in height. It operates within a temperature range of -40 C to +125 C at frequencies between 100 kHz and 300 kHz.

Switching Converter, SMPS Transformers Feature Summary

• Designed for flyback converter topologies using the LT3748 controller
• Features dual secondary windings for isolated output generation
• Supports high-frequency operation up to 300 kHz
• Constructed for robust surface mount integration

Switching Converter, SMPS Transformers Applications

• Flyback power supply designs
• Isolated DC-DC conversion circuits
• Industrial control power modules
• Consumer electronics power adapters

Switching Converter, SMPS Transformers Procurement Notes

Verify the specific datasheet version for the 750311911 part number to ensure alignment with current manufacturing standards. Confirm that the dual secondary winding configuration matches the target circuit requirements. Check RoHS compliance documentation for regulatory adherence. Ensure the SMD package dimensions fit the designated PCB footprint without clearance issues.

Switching Converter, SMPS Transformers Selection Notes

Select this component when a 12 W flyback solution is required with dual isolated outputs. The 6.78 uH inductance suits high-frequency switching applications. Verify that the 28 V primary and 250 V secondary ratings align with the system's electrical constraints. Consider the operating temperature range if the environment exceeds standard limits.

Switching Converter, SMPS Transformers Part Context

This transformer belongs to the WE-FB LT3748 series, optimized for use with the LT3748 flyback controller. The series provides pre-wound magnetic components to simplify design cycles. It represents a specialized solution for isolated power conversion, distinct from general-purpose transformers or other Würth series like MID-FLYADI.

Switching Converter, SMPS Transformers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.