Control Data (?) circuit boards

Paul Koning paulkoning at
Wed Sep 9 12:08:11 CDT 2015

> On Sep 9, 2015, at 1:00 PM, Mike Stein <mhs.stein at> wrote:
> Speaking of Control Data:
> I have some boards out of (AFAIR) a Control Data Display Controller (OSG 1253/1255), each populated with ~30 10pin TO-5 ICs; they're Fairchild with (house?) numbers such as 115, 116, 117, 118 and what I assume to be date codes (all 3 digits, 7xx), e.g. F 115 728.
> Any reason why I shouldn't scrap these (after cutting off the gold fingers of course ;-) ?

I don't recognize 115 etc. as IC part numbers, but 728 or similar 7xx numbers sounds familiar for the old RTL ICs that Fairchild produced in TO-5 cans.

I don't suppose there's a whole lot of demand for that family, but then again I also suppose there aren't a lot available.


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