[rescue] Can anyone point me in the right direction for this connector

Joshua Boyd jdboyd at jdboyd.net
Tue Dec 17 03:44:17 EST 2024


On 11/30/24 12:39, Todd Vernon via rescue wrote:
> I’m connecting a mini ATX power supply to a SPARCstation 1 mother 
> board.  This is the photo of the connector (from the web).  Can anyone 
> point me to the general name and maker of this connector so I can 
> order on Mouser?
>
> Thx in advance.
>
This just hit my inbox today, so I apologize if I'm too late to be 
helpful.  That looks an awful lot like a Molex Mini-Fit Jr connector, 12 
circuit, dual row.

Here is the data sheet: 
https://www.molex.com/en-us/products/part-detail/39012125?display=pdf

They are $0.58 on Digikey.  That doesn't include the crimp sockets 
though, those are sold separately. The crimp part series is Molex 5556, 
but the exact one depends on what size wire you need, likely 18gauge 
(awg).  Those are likely to be in a bag of 100 for something like $5 to 
$10 dollars.

The big thing to check is to unplug that connector and check that the 
pin keying matches.

Also, some amount of removing pins from shells is expected, so you might 
not need a new shell, just use the one in the picture and put new pins 
in it.  Officially you need a pin removal tool. The official version of 
the tool is a bit pricey at $26 (well considering it is 3 riveted pieces 
of metal), but things labeled ATX pin extractor tools will often be 
cheaper. Not cheaper than a new shell, but worth having on hand and 
definitely useful if the keying on your connector isn't an exact match 
for the general Molex shell referenced above.




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