Vintage 1980s-1990s silicon wafers - Qty of five, randomly picked 5 inch wafers For Sale
Vintage 1980s-1990s silicon wafers - Qty of five, randomly picked 5 inch wafers :
This sale is for five silicon wafers randomly picked. The set shown is typical of what you would receive. These are all 25 to 35 years old, five inches in diameter, American made, and all have printed circuits on them. Microprocessors, peripherals, memory, and logic are all in the mix. Some may have surface scratches, finger prints, or scuffs, but most are in very good to excellent condition. I don't have time to sort these out. That's why they are going cheap.
Circuit patterns on wafers of this age are large enough to be viewed well with a 100x scope. As you can see the colors of the microscopic films and circuits vary dramatically with lighting and viewing angle. These photos were made in ordinary white room lighting and are not color enhanced.