749119650

Overview

The Würth Elektronik 749119650 is a surface-mount power transformer from the WE-PoEH series, designed for high-power Power over Ethernet applications. It features a primary voltage rating of 33 to 57 V and an auxiliary voltage of 10 V. The component provides 1500Vrms isolation and operates within a frequency range of 200 to 400 kHz. It has a physical size of 14.00 mm x 18.10 mm with a maximum height of 14.50 mm. The unit supports operating temperatures from -40°C to +125°C.

Feature Summary

• Designed specifically for high-power PoE DC/DC converter topologies
• Provides robust 1500Vrms electrical isolation between windings
• Optimized for switching frequencies between 200 kHz and 400 kHz
• Supports wide ambient temperature operation up to 125°C

Applications

• Power over Ethernet (PoE) midspan injectors
• PoE powered device (PD) input stages
• High-power DC/DC converter modules
• SMPS transformers in network infrastructure equipment

Procurement Notes

Verify the specific datasheet revision when ordering, as manufacturer updates may occur. Confirm that the surface mount package dimensions align with your PCB footprint design. Ensure the 33-57V primary range matches your system's input requirements. Check for any recent PCN notifications regarding material or process changes before finalizing procurement.

Selection Notes

Select this component when high power density and wide temperature tolerance are required for PoE systems. The WE-PoEH series offers optimized performance for 200-400kHz switching frequencies. Consider the 14.00mm x 18.10mm footprint for space-constrained designs. Verify compatibility with your specific DC/DC converter topology before integration.

Part Context

This part belongs to Würth Elektronik's WE-PoEH series, which focuses on high-power Ethernet供电 solutions. These transformers are engineered to meet the demanding efficiency and thermal requirements of modern PoE standards. The series utilizes advanced core materials to minimize losses at higher frequencies while maintaining reliable isolation characteristics.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.