Ram 30-pin SIMM socket where to buy?

naruse

naruse

Tinkerer
Sep 14, 2024
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Hello friends!,

So I am in the process of desoldering the ram sockets from a battery bombed SE/30 logic board and I broke one of the ram sockets (and that basically means I will most likely break the other ones; does anyone know where I can buy these sockets :/ ?
 
naruse said:
@This Does Not Compute aww and specifically the ram one is gone :( https://www.peconnectors.com/sockets-pga-cpu-and-memory/hws5040
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Looks like something just was goofy with the link, I got it updated:

www.peconnectors.com

30 pin SIMM Socket Metal Latches: Phoenix Enterprises -PE- Connectors IC Sockets Tools Cable Wire

MEMORY SOCKET SIMM-3030 PIN SINGLE ROW SIMM MODULE SOCKETVERTICAL / STRAIGHTMETAL LATCHESTIN PLATED CONTACTSTIN PLATED TAILSTHROUGH HOLE PCB MOUNT HWS5040 : phased-out productAlso available:30 pin SIMM Socket Plastic Latches HWS4323Dual 30 pin SIMM Socket Angled HWS9229Dual 30 pin SIMM Socket...
www.peconnectors.com www.peconnectors.com
 
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dgveedubbus89 said:
Colin is still having nightmares from his SE/30 reloaded project (Which came out beautiful BTW) but lucky us we get to enjoy the plethora of information he gathered along the way!
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100%; we should put Colin's Sheet somewhere easy to access as it has been proving a quite invaluable resource
 
I notice that in the spreesheet the cpu crystal is listed as "16.9344MHz, seemingly not available" I have seen through hole oscillators in this frequency available for sale do we know what ppm it requires? Mouser seems to offer between 10 and 150 ppm

Hmm reading the schematic now I see it says 33pF and the closest oscillator I can find says 16.9344MHz 30pf Load tolerance
(link here https://www.mouser.ca/ProductDetail/IQD/LFXTAL003366Bulk?qs=e4/AndAAwgLxw7JTqjIxzQ==).

Is there any way to use this oscillator if your original is damaged and unavailable? Seems like this might be as close as is now available.
 
Last edited:
@This Does Not Compute

I checked today and found the price of those 30-pin SIMM sockets to be $9.60 each! Do you remember how expensive were they when you put your spreadsheet together a year ago?

1741154615886.png
 
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JDW said:
Yikes! Even $5 each is quite high, but the current pricing is out of this world.
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CayMac vintage has a new solution for replacing expensive SIMM sockets. For a little more than the cost of a replacement socket, you get a memory module with a new, novel way of attaching to the logic board he calls SIPP 2.0:

 
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JDW said:
Yikes! Even $5 each is quite high, but the current pricing is out of this world.
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It's likely supply and demand. I've long suspected those sockets are NOS parts, and now that there's increased demand and supply is shrinking, they're going to price them accordingly. Long-term, we'd need someone to bankroll having a manufacturer start making the sockets again -- but given the start-up costs (and likely high MOQ) I'm not sure the pricing for that would be any better.
 
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