749119233

Overview

The Würth Elektronik part number 749119233 is a surface mount LAN Ethernet transformer belonging to the WE-PoE series. Designed for Power Over Ethernet applications, this component supports DC/DC converter topologies and provides 1500Vrms isolation. It operates within a switching frequency range of 200 to 500kHz and functions reliably across an extended temperature range from -40°C to +125°C. The device measures 16.8 mm in length, 7.4 mm in width, and 16.3 mm in height. It is compatible with chipsets from Linear Technology and Texas Instruments.

Feature Summary

• Provides galvanic isolation for Power Over Ethernet systems
• Supports high-temperature operation up to 125°C
• Optimized for DC/DC converter integration

Applications

• Power Over Ethernet (PoE) infrastructure
• Network interface card design
• Industrial communication equipment

Procurement Notes

Verify the specific datasheet version when ordering, as manufacturer specifications may be updated. Confirm that the 1500Vrms isolation rating meets your safety requirements. Ensure the 200-500kHz switching frequency aligns with your power supply design. Check compatibility with target controller chipsets such as LM5070 or LTC4267 before finalizing procurement.

Selection Notes

Select this component for designs requiring robust isolation in compact surface mount layouts. The wide operating temperature range makes it suitable for harsh industrial environments. Verify that the physical dimensions fit within the available PCB area. Consider the compatibility with standard PoE controllers when evaluating alternative magnetic components.

Part Context

This transformer is part of Würth Elektronik's WE-PoE series, which focuses on efficient power delivery over Ethernet cables. The series supports various isolation levels and form factors to accommodate different network standards. Würth Elektronik manufactures these components to meet strict quality and reliability standards for global electronic markets.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult official distributor databases or manufacturer cross-reference tools to identify equivalent components with matching electrical parameters and footprint dimensions.