749013011A

Pulse Transformers Overview

The Würth Elektronik 749013011A is a surface-mount LAN pulse transformer designed for 10/100 Base-T Power over Ethernet applications. It features a single port configuration with a 1:1 turns ratio and an inductance of 350 µH. The component supports IEEE 802.3 and IEEE 802.3af standards, utilizing a ferrite base and Cu-Ni-Sn contact plating. It operates within a temperature range of -40 °C to +85 °C and provides isolation voltage capabilities suitable for PoE implementations.

Pulse Transformers Feature Summary

• Designed for 10/100 Base-T Power over Ethernet (PoE) signal transmission
• Compliant with IEEE 802.3 and IEEE 802.3af standards
• Surface-mount construction with ferrite base and Cu-Ni-Sn plating

Pulse Transformers Applications

• Power over Ethernet network interface circuits
• 10/100 Base-T data communication systems
• Ethernet port protection and signal coupling

Pulse Transformers Procurement Notes

Verify the specific suffix 'A' against the manufacturer's official documentation to confirm exact electrical tolerances and thermal ratings. Ensure the selected variant matches the required isolation voltage and inductance specifications for the target PoE application. Cross-reference the datasheet revision date to validate compliance with current IEEE standards before finalizing procurement.

Pulse Transformers Selection Notes

Select this component for designs requiring standardized 10/100 Base-T connectivity with integrated PoE support. The 1:1 turns ratio and 350 µH inductance are critical for maintaining signal integrity in standard Ethernet links. Consider the -40 °C to +85 °C operating range when evaluating environmental constraints for industrial or commercial deployments.

Pulse Transformers Part Context

This part belongs to the WE-LAN series from Würth Elektronik, which specializes in LAN transformers for Ethernet applications. The series includes various configurations for different speeds and power requirements. The 749013011A specifically addresses the need for compact, surface-mount solutions that support both data transmission and power delivery over a single cable.

Pulse Transformers Replacement Considerations

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