Magnetics modules support 2.5G Ethernet LANs

source: EDN article

Susan Nordyk -October 17, 2015

Surface-mount XF2-5GPOLx series transformer modules from XFMRS furnish 1500-V RMS isolation for 2.5GBASE-T Ethernet applications using Cat 5e cable infrastructure. The compact devices have a 1:1 turns ratio and provide open-circuit inductance of 350 µH minimum with a bias current of 8 mA (100 kHz, 0.1 V).

The XF2-5GPOLA is rated for 720 mA, while the XF2-5POLB is rated for 1 A. Both transformers operate over a temperature range of 0°C to 70°C. A third device, the XF2-5GPOLC, is rated for 1 A and operates over a temperature range of -40°C to +85°C. Secondary DC resistance is 1.40 Ω maximum.

All of the PoE-capable transformer modules carry a UL94V-0 flammability rating and come taped and reeled (250 pieces per 13-in. reel).

XF2-5GPOLx transformer datasheet

XFMRS, www.xfmrs.com

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