WIZnet Developer Forum

Mag Jack and PoE

I will use the W5500 in a new design and a RJ45 Mag Jack for PoE

I saw in the reference designs that the center taps of the transformers are connected via 75R and 1nF to GND.

Are these relevant or do also RJ-45 connectors without the RC work?

Will these two RJ-45 connectors work with the W5500?
Pulse JXD1-0007NL http://productfinder.pulseeng.com/products/datasheets/JXD1-0007NL.pdf
Wuerth 7499211121A http://katalog.we-online.de/pbs/datasheet/7499211121A.pdf

Thank you for your help.

Best regards


The mag jack from Wurth works. I have used it in my design without problems.

This is the schematic I used.

You can find the footprint for the mag jack on the manufacturer’s website.

Hope it helps,

Hi Cristian,

Thank you very much for your help.



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