I've been searching for days and can't seem to find a rugged RJ-45 Ethernet connector with integrated magnetics. Probably it would be good enough if the connector was just potted so water cannot leak through.

Is there a reason why such items don't exist?

  • \$\begingroup\$ what is the application that you want this for? ... you can get a waterproof RJ-45 connector that you can use to make a short extension between the ethernet controller and the enclosure ... ethernet ctrl ---> RJ45 cable end ---> short cable --> waterproof RJ-45 plug \$\endgroup\$
    – jsotola
    Commented Feb 5, 2018 at 18:59
  • \$\begingroup\$ digikey.com/en/product-highlight/a/assmann-wsw-components/… \$\endgroup\$
    – jsotola
    Commented Feb 5, 2018 at 19:05
  • \$\begingroup\$ The application is a flexible device without an enclosure. The ethernet connector should be mounted directly to the flex PCB and then the whole thing will be coated with some rubber. \$\endgroup\$ Commented Feb 5, 2018 at 19:09
  • \$\begingroup\$ discrete transformer and this .... digikey.com/product-detail/en/assmann-wsw-components/A-RJ45DFR/… \$\endgroup\$
    – jsotola
    Commented Feb 5, 2018 at 20:52
  • \$\begingroup\$ Thanks that's basically what I had to do (although with a similar connector because that one is discontinued). \$\endgroup\$ Commented Feb 7, 2018 at 10:30

1 Answer 1


Probably not.

Waterproof connectors are typically mounted to a bulkhead and Ethernet connectors with integrated magnetics have to be mounted close to the PHY chip. Ruggedized RJ45 is kind of a sloppy thing anyway.

People who care about ruggedized connectors (and care a bit less about cost) often use a different connector than RJ45 for 'Ethernet' (such as M12/military circular connectors).

  • 1
    \$\begingroup\$ Thanks, I noticed that at least one manufacturer (Harting) is now offering M12 connectors with integrated magnetics. They are much too expensive for my application, but at least I can say that this appears to confirm your answer. \$\endgroup\$ Commented Feb 7, 2018 at 10:30

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