750310743

Switching Converter, SMPS Transformers Overview

The Würth Elektronik 750310743 is a surface-mount power transformer designed for Power over Ethernet (PoE) applications. It features a WE-PoE+ series topology with 1500Vrms isolation voltage and operates within a frequency range of 250 kHz to 400 kHz. The component has a primary voltage rating of 37 V to 57 V and provides an auxiliary voltage of 12.7 V at 30 mA. It utilizes an LT4276 chipset configuration and offers an inductance of 38 µH at 100 kHz. The package dimensions are 13.46 mm in length, 18.10 mm in width, and 12.70 mm in maximum height.

Switching Converter, SMPS Transformers Feature Summary

• Provides high-voltage isolation of 1500Vrms for safety compliance in PoE systems
• Optimized for DC/DC converter topologies using the LT4276 chipset
• Supports operating frequencies between 250 kHz and 400 kHz
• Designed for surface mount technology (SMD/SMT) installation

Switching Converter, SMPS Transformers Applications

• Power over Ethernet (PoE) infrastructure
• DC/DC converter circuits
• SMPS transformer implementations

Switching Converter, SMPS Transformers Procurement Notes

Verify the specific datasheet revision and packaging type (Reel, Cut Tape, or Digi-Reel) prior to ordering, as these may vary by distributor. Confirm that the LT4276 chipset compatibility aligns with the target design requirements. Ensure the physical footprint matches the PCB layout constraints given the 13.46 mm x 18.10 mm dimensions. Cross-reference the auxiliary winding specifications if secondary power delivery is required.

Switching Converter, SMPS Transformers Selection Notes

Select this component when designing PoE systems requiring 1500Vrms isolation and operation within the 37 V to 57 V input range. The 38 µH inductance value is suitable for the specified 250 kHz to 400 kHz switching frequencies. Consider the 12.7 V auxiliary output capability if integrated biasing is needed. The SMD form factor supports automated assembly processes for high-volume manufacturing.

Switching Converter, SMPS Transformers Part Context

This part belongs to the Würth Elektronik WE-PoE+ series, which focuses on transformers specifically engineered for Power over Ethernet standards. The series supports various PoE controllers and ensures reliable energy transfer over Ethernet cabling. The 750310743 variant targets designs utilizing the LT4276 controller, providing a complete magnetic solution for compliant network power distribution systems.

Switching Converter, SMPS Transformers Replacement Considerations

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