I'm thinking of building some 16MB 30-pin RAM SIMMs out of some surplus, unknown condition 128MB 72-pin SIMMs. With only 2 chips per 16MB SIMM, it should be pretty easy to weed out any bad ones, but it'd be great to be able to build some boards with sockets for quick, easy chip swapping. The chips are 32-pin SOJ, which is like a SOP/SOIC, but with "J lead" style legs, folded under like a PLCC. They are .400" (400 mil) wide.
I can find 32-SOJ sockets that are 300 mil wide: https://www.peconnectors.com/sockets-surface-mount/hws10099/
I can find 40-SOJ sockets that are 400 mil wide: https://www.peconnectors.com/sockets-surface-mount/hws8871/
...but I can't find 32-SOJ sockets that are 400 mil wide. I can find evidence that they were manufactured at one point, with some part numbers:
...but I can't find evidence that anybody is sitting on any stock of those old parts. The best idea I have is to just use the 40-SOJ sockets. It would be ugly, but functional. Before I do that, I figured I'd throw it out to the group here to see if anyone knows something I don't. Thanks!
I can find 32-SOJ sockets that are 300 mil wide: https://www.peconnectors.com/sockets-surface-mount/hws10099/
I can find 40-SOJ sockets that are 400 mil wide: https://www.peconnectors.com/sockets-surface-mount/hws8871/
...but I can't find 32-SOJ sockets that are 400 mil wide. I can find evidence that they were manufactured at one point, with some part numbers:
...but I can't find evidence that anybody is sitting on any stock of those old parts. The best idea I have is to just use the 40-SOJ sockets. It would be ugly, but functional. Before I do that, I figured I'd throw it out to the group here to see if anyone knows something I don't. Thanks!