750310031

Overview

The Würth Elektronik 750310031 is a surface-mount flyback transformer designed for Power over Ethernet (PoE) applications. It operates within a primary voltage range of 33 to 57 V and provides an auxiliary voltage of 8 V at 20 mA. The component features 1500 Vrms isolation and functions at a frequency of 200 kHz. It belongs to the WE-PoE and MID-POE series, utilizing a reel packaging format suitable for automated assembly processes.

Feature Summary

• Designed specifically for Power over Ethernet (PoE) DC/DC converter topologies
• Provides high-voltage isolation capability of 1500 Vrms between windings
• Includes dedicated auxiliary winding for bias supply generation

Applications

• Power over Ethernet (PoE) powered devices
• DC/DC converter modules in network infrastructure
• Switching mode power supplies requiring PoE integration

Procurement Notes

Verify the specific datasheet revision against the manufacturer's official documentation prior to procurement. Confirm that the ordering suffix matches the required tape and reel configuration for your assembly line. Ensure compliance with RoHS3 specifications and check for any recent Product Change Notifications (PCN) affecting design or material composition.

Selection Notes

Select this component when designing PoE systems requiring integrated isolation and auxiliary power generation. Verify that the 200 kHz operating frequency aligns with your controller's switching requirements. Ensure the physical footprint and pinout are compatible with the target PCB layout and that the thermal performance meets the application's temperature constraints.

Part Context

This part belongs to Würth Elektronik's WE-PoE and MID-POE transformer families. These components are engineered to simplify PoE circuit designs by combining isolation and auxiliary power functions into a single surface-mount package. They support standard PoE protocols and are intended for use in compact network equipment where space efficiency is critical.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult the manufacturer's Red Expert Design Tool or official cross-reference lists for verified alternatives.