Sourcing 30/72 pin SIMM sockets, any tips?

[Matthew Barrick]

I'm working on and off, on some retrobrew boards. While everything is still breadboard stage, I'm slowly putting together all the parts for the final boards (other people's designs at this point). 

Any recommendations/ideas on where to get (preferably new) 30-pin and 72-pin SIMM sockets? 

I feel like harvesting them from old machines is some sort of heresy, but also something I don't want to deal with doing it.

In the same vein I'm looking for good 2xN connectors for floppy/ide/scsi. Getting a header that will work find is easy enough, but particularly for IDE (what I'm looking for at the moment) I'd really like to get some good looking real IDE connectors. Just the right shroud cutouts, 39 pin,  preferably in one of those odd colors that seem popular for IDE connectors in the late 90s.   So someone looking at the board doesn't see a 40-pin header, but an IDE connector. T

The IDE connector is just a minor aesthetic thing, but simm sockets are really something I can't find a solution for. 

Any help appareciated 

-mjb

[Ed Porter]

I've obtained both 30-pin and 72-pin from ebay recently:
30-pin: https://www.ebay.ch/itm/122004729920
72-pin: https://www.ebay.ch/itm/322844028747

Both vendors have a reasonable variety of obsolete connectors.

-ed

[Sergey Kiselev]

72-pin SIMM sockets are available from Mouser:

Vertical (22deg): https://www.mouser.com/ProductDetail/571-5822134-3

Left angle: https://www.mouser.com/ProductDetail/571-5822030-3

Vertical, gold plated contacts: https://www.mouser.com/ProductDetail/571-5821997-3

Thanks,

Sergey

[Sergey Kiselev]

As far as floppy/IDF/SCSI connectors go, they are also available new, from almost all electronic components distributors. Look for "header,  shrouded, 40 positions, 2.54 mm  pitch".

Speaking of IDE, most likely you'll be able to find connectors made with either black or gray plastic, and with all 40 pins populated. You can push pin 20 out by applying a direct force to it, or by pulling it with a pair of pliers.

Here is a relatively cheap one from Mouser: https://www.mouser.com/ProductDetail/517-30340-6002

--Sergey

[Rob Gowin]

Phoenix Enterprises is a good US source of connectors. They have a wide variety and reasonable prices. New 30-pin and 72-pin SIMM sockets are here: https://www.peconnectors.com/sockets-pga-cpu-and-memory. They also have shrouded box headers available: https://www.peconnectors.com/box-headers-pcb-.100-straight

Unrelated, but I also like their reasonably priced DIN41612 connectors: https://www.peconnectors.com/euro-din-41612-connectors.

-- Rob

[Alan Cox]

On Tue, 20 Apr 2021 at 16:22, Sergey Kiselev <skis...@gmail.com> wrote:

As far as floppy/IDF/SCSI connectors go, they are also available new, from almost all electronic components distributors. Look for "header,  shrouded, 40 positions, 2.54 mm  pitch".

Speaking of IDE, most likely you'll be able to find connectors made with either black or gray plastic, and with all 40 pins populated. You can push pin 20 out by applying a direct force to it, or by pulling it with a pair of pliers.

Here is a relatively cheap one from Mouser: https://www.mouser.com/ProductDetail/517-30340-6002

In the UK especially ready made 20x2 cables are also available for the Raspberry PI GPIO along with classic IDE look 20x2 sockets and other connectors. Classic IDE (pre UDMA) doesn't need fancy cables so they work fine including UDMA capable devices in normal modes.

SCSI is always a bit more fun - is that 50pin, 25pin, 68pin, 80pin, or centronics, or lvds, or.... (and don't forget to turn on the device at the end of the chain first....)

It always amuses me when the kids bitch about there being too many USB cable types. They have *no* idea 8)

Alan