Please see all COVID-19 updates here as some shipments may be delayed due to CDC safety and staffing guidelines. If you have an order or shipping question please refer to our Customer Support page. For technical questions please check out our Forums. Thank you for your continued support.

RJ45 Ethernet MagJack Breakout

If you need to get your MagJack into a breadboard, this is for you. This board exposes all pins, LEDs, and housing with breadboard friendly spacing.

RJ45 Ethernet MagJack Breakout Product Help and Resources

Core Skill: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

2 Soldering

Skill Level: Rookie - The number of pins increases, and you will have to determine polarity of components and some of the components might be a bit trickier or close together. You might need solder wick or flux.
See all skill levels


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • It creates problem on breadboard...it should be redesigned to all pins at one side..

  • Would be awesome if these were all pins along one end - the board is quite wide on the breadboards I have, and it's difficult to get access to the rows under it. (Would probably help with soldering this for newbies... like me :) )

    • Here you go!

  • Would I be able to cut this and get the same functionality as http://www.sparkfun.com/products/716 at half the price?

    • this is for the jack that has magnetic(transformers) built in to protect the chip. This board works with the mag jack. The board you referred to works with a standard jack with no magnetic. As far as I know the pin out is spaced differently.

  • I have been successfully using this with an mbed, but what are the 'gs1' and 'gs2' pins? My guess is they have something to do with a ground (shielded ground?) but the RJ45 works without those pins. Can anyone tell me what they are?

    • Yes, they are the shield over the connector. Connect them to ground. It's likely to work just fine 100% of the time without them, though.

  • I have ordered some of these, but I received other circuit. What I received came with two sm leds, a couple of resistors and caps, and does not fit the magjack http://www.sparkfun.com/commerce/product_info.php?products_id=8534 pins. It only breaks Vcc, Gnd, Tx and Rx.
    Has anybody got one of these?

  • Ditto comment about pins along one side. Any hope for a new build of these?

Customer Reviews

No reviews yet.