749013011

Pulse Transformers Overview

The Würth Elektronik 749013011 is a surface-mount LAN pulse transformer designed for 10/100 Base-T applications with Power over Ethernet (PoE) support. It features a 1:1 turns ratio and operates within a frequency range of 1 MHz to 100 MHz. The component has an inductance of 350 µH and provides an isolation voltage of 1.5 kVAC. It functions reliably across a temperature range of -40°C to +105°C. The unit utilizes SMD/SMT termination and includes shielding to minimize electromagnetic interference.

Pulse Transformers Feature Summary

• Supports Power over Ethernet (PoE) functionality integrated with standard LAN signaling
• Provides galvanic isolation between network lines for circuit protection
• Shielded construction reduces electromagnetic interference and crosstalk
• Surface mount design facilitates automated assembly processes

Pulse Transformers Applications

• 10/100 Base-T Ethernet network interface circuits
• Power over Ethernet powered devices requiring signal and power transmission
• Industrial communication modules operating in wide temperature ranges
• Consumer electronics with integrated Ethernet connectivity

Pulse Transformers Procurement Notes

Verify the specific datasheet version for the 749013011 part number to confirm exact electrical tolerances and pinout configurations before integration. Ensure that the selected component meets the thermal requirements of the target application, as the maximum operating temperature is specified at 105°C. Cross-reference the isolation voltage rating of 1.5 kVAC against system safety standards. Confirm that the surface mount package dimensions align with the printed circuit board layout constraints.

Pulse Transformers Selection Notes

Select this component when designing systems requiring simultaneous data transmission and power delivery over Ethernet cables. The 350 µH inductance value is suitable for maintaining signal integrity at 10/100 Mbps speeds. Consider the 1.5 kVAC isolation rating for environments requiring robust electrical separation. The wide operating temperature range makes it appropriate for industrial or outdoor deployments where ambient temperatures may fluctuate significantly.

Pulse Transformers Part Context

This component belongs to the WE-LAN series from Würth Elektronik, which specializes in magnetics for networking applications. The series includes various transformers tailored for different Ethernet standards and PoE classes. The 749013011 specifically addresses the need for compact, shielded solutions in space-constrained designs while maintaining compliance with IEEE 802.3 standards for baseband transmission.

Pulse Transformers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints if considering alternative manufacturers. Check equivalent inductance and isolation ratings when evaluating generic replacements.