While cleaning out the backroom of an Electronics Store we came across about 100 of these chips. I took them to the shop but I have not been able to determine what they are. Resistance readings are very high and capacitance readings are negligible. Hamlin is now owned by Littlefuse. The 8235 on each appears to be a date code which makes sense as all the other chips that were with this lot all came from the 1970s. Anyone have any ideas. I have tried to Google the image also with no results.
Thanks John
