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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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22nd Apr 2021, 5:24 pm | #1 |
Hexode
Join Date: Feb 2007
Location: Chesterfield, Derbyshire, UK.
Posts: 481
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Telecomms IC
I have six glass masks here which would have been used for IC manufacture, they are Marked STC LTD 1982
The six masks are labelled:- 51A STL-134A ISOL 91A STL-134A METAL 2 61A STL-134A METAL 1 811A STL-134A POLY. 121A STL-134A PASS. 41A STL-134A OHMIC It would be interesting to know what the device was what was manufactured using them. |