ROM Socket question

[Jockelill]

HI!

Does anyone know if the 64pin socket ever existed in a 45degree version? I've tried to browse Connector People page, but it's a bit difficult. So far I've only found straight ones:
Single:

822019-2 - NTI - The Connector People

www.connectorpeople.com

Single with center post:

822021-2 - NTI - The Connector People

www.connectorpeople.com

Dual:

822023-2 - NTI - The Connector People

www.connectorpeople.com

For a project I'm working on a 45degree angled one would be perfect .

 

[dougg3]

I'm pretty sure an angled version existed. I want to say that back in the day when @olePigeon raided his local surplus parts store for me, there were a few angled ones in there. I must have sold them with programmers though.

Looking on Digi-Key you can actually find a few part numbers if you look at the datasheets for the 72-pin versions.

• https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/905/822110.pdf
• https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/977/821950.pdf

Not 45 degrees -- these are 22 degrees and 25 degrees. Looks like the relevant part numbers were 822110-1, 821950-1, and 821950-5. Good luck, maybe you can track down some old stock somewhere...

 

[olePigeon]

Unfortunately the location in question, Excess Solutions, closed and sold their inventory to some other company.

It was a fantastic place to get things like sockets. I just assumed they'd be around for a while, when one day they weren't. Missed out on the handy ZIF sockets they had in various sizes. I've regretted not buying them since they're so darn expensive online.

 

[mari3311]

I don't know if a 45 degree socket existed, but I have a 64 pin socket with a 25 degree angle.
The insertion angle is 60 degrees and locks at 25 degrees.

I got it to repair my SE/30, but by mistake I got one that wasn't straight.
That was over eight years ago.
The model number is AMP 822138-1, but I can't find any information online at the moment.

 

[Jockelill]

Thanks both @dougg3 and @mari3311 ! Brilliant suggestions! I have been able to find all suggested part numbes at connector people, unfortunately they are no longer in stock . I had a second look today, and since the pins are quite long and thin on my straight connectors, I should be able to solder it in at an angle.

I must ask @mari3311, what is that orange board under the simm? It looks like a PDS Simm socket adapter

 

[Jockelill]

@jajan547 directed me to a taiwanese site :

[ 01 ] SIMM SOCKET – ANYTRONIC®

Which has a lot interesting, but everything is "request quote", so I assume there is a high MOQ...

 

[mari3311]

I'm glad you found a solution.

The orange board is a prototype for setting a ROMSIMM in the PDS slot of SE/30.
If the fixing hook of the original ROM socket on the logic board is broken or the pin contacts are not making good contact, I can now set the ROMSIMM without using the original socket.

However, since the PDS does not have a signal for ROMSIMM number 11&12 (ROM*), I connected it directly to number 11&12 on this orange board with a lead wire from the back of the original socket.

 

[jajan547]

I suppose you can also use right angle female headers but wouldn’t look as nice.

 

[dougg3]

Because I'm crazy, I got ahold of an old AMP IC sockets catalog from 1995. I feel like I should scan and archive this whole catalog because it also has cool stuff like part numbers for PGA sockets, but here is the relevant info about 64-pin SIMM sockets. By the way, the sockets are only rated for a minimum of 25 insertion cycles. So...we're probably wearing them out pretty quickly with ROM tinkering!

MICRO-EDGE 64-pin SIMM sockets:

• Vertical with plastic latches:
  • Tin plate: 821824-6
  • Gold plate: 821825-6
• 25 degree with plastic latches:
  • Tin plate: 821947-5
  • Gold plate: 821950-5
• Vertical with metal latches:
  • Tin plate with center post: 822021-2
  • Tin plate without center post: 822019-2
  • Gold plate with center post: 822032-2
  • Gold plate without center post: 822031-2
• Vertical dual SIMM with metal latches:
  • Tin plate with center post: 822090-2
  • Tin plate without center post: 822023-2
  • Gold plate without center post: 822033-2
• 22 degree with metal latches:
  • Tin plate with center post: 822134-1
  • Tin plate without center post: 822136-1
  • Gold plate with center post: 822137-1
  • Gold plate without center post: 822138-1
• 22 degree with metal latches and a different type of center post:
  • Tin plate: 822110-1
  • Gold plate: 822097-1

SIMM II 64-pin SIMM sockets:

These sockets have an interesting introductory comment that I think is referring to the board thickness:

The SIMM II Vertical Cam-In Sockets have been introduced to provide a SIMM socket that will accept a non-JEDEC module board. The socket is designed to accept a SIMM module board with a tolerance of +/- .005 [+/- 0.13]. Due to the fact that module manufacturers are having difficulty maintaining the JEDEC specified tolerance of .050 +.004 -.003 [1.27 +0.10 -0.08], this product provides a solution for the marketplace.

Heh, if only they knew 20-30 years later people would still be dealing with board thickness issues with these sockets. Anyway, part numbers:

• Vertical with metal latches, right polarized:
  • Tin: 6-382702-4
  • Gold: 6-382696-4
• Vertical with metal latches, left polarized:
  • Tin: 6-382698-4
  • Gold: 6-382700-4
• Vertically inserted straight down with full force and extraction lever:
  • Tin, extraction lever on right: 6-382555-4
  • Gold, extraction lever on right: 6-382531-4
  • Tin, extraction lever on left: 6-382574-4
• Right angle (sits flat against the board):
  • Awww, they didn't make this in a 64-pin version. They did for 40, 68, 72, 80, 84

They also made some 64-per-side DIMM sockets that you push straight down to insert, which would require a different PCB footprint but would be module compatible if you treated them as a SIMM by wiring both sides together. There's a bunch of variations of this, but the relevant 64-position part numbers are: 6-382617-4, 6-382781-4, 6-382784-4, 6-382759-4, 6-382762-4, 6-382790-4, 6-382765-4, and 6-382580-4. That last one is a dual DIMM socket.

Here's a newer (revised 2001) version of the same pages I'm looking at. Looks like by 2001 they had quit offering the 64-pin varieties.