> > Trust me, I've used these sockets. It is a through-hole > > component suitable for vectorboard.
Here's a technical drawing of one: http://portal.fciconnect.com/Comergent//fci/drawing/54020.pdf Plug your PLCC in the top of the socket, and insert the socket in the a 0.1" pitch grid of holes. I have used them myself in the past. My 1st experience with surface mount, on PCBs*, was around 1985. Before that, the highest pin count was the 40-pin DIP. Motorola had the 68000 in a 64-pin DIP for a while, but that didn't last. PLCCs and PGA (pin grid array, not programmable gate array) came in to address the higher pin count. PGAs were thru-hole, while PLCC was surface mount. But shortly thereafter, sockets that could accommodate the PLCC, but plug into a PGA footprint appeared. These are those sockets; still available. *Surface mount technology was used on 'hybrid circuits' long before someone decided to stick one directly onto a PCB. I've seen chip capacitors mounted onto a ceramic hybrid substrate as far back as 1973, and that was on an obsolete reject assembly, so it was probably used as early as the 60s. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
