The 2010 discussion is interesting to me.
I have a SMC 2010B with a date code of 7736 in Ceramic with gold legs. Is
this a second source of the Western Digital or something different?
I also have a couple of similar chips by SMC, a Plastic/gold 2009H with a
date code of 7942D,
and a Plastic/gold 3007-A01 with a date code of 7852A. This one has a P.N. of
27-001 on it also and is a 28 pin dip.
The first two, the 2010 and 2009 are 40 pin dips.
All seem to be limited production run chips as I have not seen others of them.
Paxton