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Breakout Board for USB microB

Replacement:BOB-12035. We have a new rev of this breakout, go check it out! This page is for reference only.

This simple board breaks out a micro-B USB connector's VCC, GND, D- and D+ pins to a 0.1" pitch header. If you want to add the increasingly popular micro-B USB to your project, but don't want to put up with soldering the tiny connector, this is the board for you.

  • 0.8 x 0.45" (20.3 x 11.4mm)

Breakout Board for USB microB 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.

1 Soldering

Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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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.

  • Where is the fifth pin?
    Mini-usb connectors have five pins, and the fifth pin is sometimes used for charging purposes. Having it broken out as well would be nice.

    • hear! hear!

      fix that pin and i will buy dozens

      Also note that the male one has 5 pins broken out http://www.sparkfun.com/products/10031 spark fun is obviously sexist!

    • Fake-Name,
      The Pinouts go as follows:
      1) VCC
      2) D-
      3) D+
      4) NC/GND
      5) GND
      Pin 4 is the only difference. If you set it as NC, it's of Rev. B. It is set to GND, it is of Rev. A.
      I am finishing up fixing SFE's footprint of the USB Micro. The pins are fully correct, and the symbol is quite confusing.

  • I kinda like this being a 4-pin board. I bought one of these and soldered a USB A socket directly to it for a Micro-USB to Standard-A adapter.
    Kinda wish the same 4-pin breakout board style for miniUSB was still in stock.

  • As with the miniB connector breakout, are you going to revise this one to break out the extra fifth pin as well?

  • This thing is tight, I mean that in the literal sense, it just broke my favorite micro usb cable. :( I dare not use it again...

    • Use the now-dead cable to loosen it up? When my phone was new the socket was so tight I was afraid I'd break things, too - now it's much better. On the other end of the spectrum is my NAS; its mini USB socket is so loose, anything plugged in while fall out after a bit of vibration from the HDDs - added a velcro strap to stop that from happening.

  • I'm sorry, but this board is ridiculous, and certainly doesn't deserve to be called breakout, when in fact it is missing to breakout the most important pin (4), the USB_ID. There's really no other reason to buy such a board, unless that pin is also there. Otherwise you could just use any old USB-to-micro-USB cable, which either shortens ID to GND, or leaves it not connected. This pin is fundamental for being able to construct mobile phone OTG (ID=GND) devices, serial output (ID-R-GND) or designated chargers (D+=D-). Fix it, and we'll buy thousands!

    In fact your USB-mini breakout has this pin, so why not this one? (BOB-09966: http://www.sparkfun.com/products/9966 )

    • I won't name names but with a simple web search you can find a competing product that does break out all five pins

  • What is the mounting hole size/spacing?

    • for dimensions, just look at the eagle files. eagle is free to download and you can get full dimensions from there.

    • Just taking some quick measurements, I'm measuring a diameter of the holes of 3.3mm with a center to center spacing of 15 mm.

  • Great connector, except the USB jack broke off the board after a few uses. The mounting bars on the side broke away from the solder joints. After re-soldering, the solder pads broke off the board. Lame. I'll try epoxy next...

  • So why is it that your male USB micro breakout board has the 5th pin connected, but your female one doesn't? I don't feel comfortable soldering the connectors myself and this would have been perfect if that 5th pin was connected. =(

  • Neat put the pad securing the USB is fragile. I ripped the connector off the board this past week with one connecting leg broken off and the pour pad still attached to the other. I'll switch to USB B mini to get the extra ruggedness.

  • Never mind, I just realized this has all 5 pins available, but is just missing the pcb trace for pin 4. I guess I can manufacture my own trace using trace repair wire hopefully.

    • Just a heads up for those looking for the 5 pin breakout, it's available and can be found in the related products section of this page.

      • mini != micro
        The related item I see is not the same connector as what's on this page. I honestly can't tell you the number of times I've confused mini with micro TBH..

  • Wow, this would have worked perfectly had it had all 5 pins. I need both pins 4 and 5 available on this for a large project of mine. Anyone know where a micro USB female port just like this could be found with all 5 pin outs?

  • Awesome - I've been looking for these!
    Is there any plan to stock Male USB microB (and even miniB) connectors? I'm building custom USB cables, and the microB connectors seem to be rather hard to find.
    Also a miniB female to microB Male adapter would be awesome!

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