JEDEC seems to be into memory specs these days and no longer into basic
semiconductor devices.

There was a time when JEDEC and PRO ELECTRON held some sway over part
numbers and such. JEDEC seems to still be into semiconductor device package
standards, however.

4N and 6N part numbers are out there. They seem to be beyond the old JEDEC
system and relate to opto-couplers.

Is there an expanded/updated version of the 1N, 2N, 3N JEDEC system?