749020011A

Pulse Transformers Overview

The Würth Elektronik 749020011A is a WE-LAN series LAN pulse transformer designed for surface mount technology. It supports 10/100/1000 Base-T Ethernet standards with a single port configuration. The component features a 1:1 turns ratio and 350 µH inductance, ensuring signal integrity across the required frequency range. It provides isolation voltage of 1500 Vrms and operates within a temperature range of -40°C to +85°C. The unit utilizes solder termination and is housed in a compact SMD package.

Pulse Transformers Feature Summary

• Supports 10/100/1000 Base-T Ethernet data transmission standards
• Integrated magnetic design with shielded construction for noise immunity
• Surface mount termination compatible with automated assembly processes
• High isolation voltage rating for enhanced circuit safety

Pulse Transformers Applications

• Gigabit Ethernet network interface cards
• Industrial Ethernet communication modules
• Network switch internal circuitry
• Embedded systems requiring 1000Base-T connectivity

Pulse Transformers Procurement Notes

Verify the specific datasheet revision when sourcing, as manufacturer specifications may be updated. Confirm that the surface mount footprint matches the target PCB layout dimensions exactly. Ensure the supply chain source provides original manufacturer documentation to guarantee component authenticity and compliance with RoHS directives.

Pulse Transformers Selection Notes

Select this component for designs requiring integrated magnetics for Gigabit Ethernet applications. It eliminates the need for separate common mode chokes or discrete transformers. Consider the thermal performance limits when designing for high-density enclosures. Verify that the board layout accommodates the specific SMD package dimensions to ensure reliable soldering.

Pulse Transformers Part Context

This part belongs to the Würth Elektronik WE-LAN family of integrated LAN transformers. These components are engineered to meet IEEE 802.3 standards for twisted-pair Ethernet. The series offers various configurations for different speed requirements and form factors, providing a standardized solution for network connectivity in electronic devices.

Pulse Transformers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official distributor databases for cross-reference information if alternative sourcing is required.