DEC power connectors (UNIBUS PDP-11s, mostly)

Bill Degnan billdegnan at
Wed Jul 25 14:14:00 CDT 2018

Just curious, is this info on or will be on your wiki?  I find it to be a
well-organized resource.

On Wed, Jul 25, 2018 at 3:09 PM Noel Chiappa via cctalk <
cctalk at> wrote:

> So, it turns out the power connectors (plastic female shell with metal male
> pins, etc) widely used in UNIBUS PDP-11's (e.g. to provide power to
> backplanes, etc) are still available, if anyone else wants any. (No doubt
> some
> of you already knew this; this is for those, like me, who didn't! :-)
> The 3-pin ones are used for the remote power on/off cables (used
> extensively
> in DEC gear, not just UNIBUS PDP-11's).
> They are 'Commercial Mate-n-Lok', now made by TE Connectivity, who bought
> AMP.
> Here are the current part numbers:
>   1-480305-0      3-pin female shell
>   1-480276-0      6-pin female shell
>   1-480277-0      9-pin female shell
>   1-480324-0      15-pin female shell
>   60620-1         14-20AWG male pin
> The 6- and 15-pin are for the backplane power connecters; the 9-pin were
> used
> to power backplanes in older machines (e.g. PDP-11/10). There's also a pin
> for
> smaller gauge wires, e.g. for the power control cables, but I don't have
> the
> number right here.
> I have checked, and these do plug into old DEC gear properly.
> I got mine from Digikey; their page for the line is here:
> Go to the bottom, where it says 'Housings', and click on that, and they
> will
> all show up. (There are cross-links to the pins when you click on a
> particular
> shell.)
>         Noel
> PS: I'm also tracking down the 8-pin connectors used in the H744/H745/etc
> regulator 'bricks'; an update on them in a day or so.

More information about the cctech mailing list