I just bought a silicon wafer off of eBay to decorate my office. The seller didn't tell/know, but I'm dead curious as to what this wafer is. Could anyone help me identify which chips should have been built out of it?
Here's a picture of the entire 12" wafer.
Poor man's macro
Here's a zoomed-in picture of the lighter rectangles that are scattered over this wafer. I took it using a super cheap magnifying glass.
Another poor man's macro
Here's another angle trying to show both the light and dark rectangles. Unfortunately I only have a smallish magnifying glass so I can't see any better.
- This is a 300 mm wafer
- I couldn't find any marking on the front side
- The backside has a serial number (
K444R215WFB3) and a QR code that's so small I couldn't decipher it.
- The dark rectangles probably have something drawn in them, but it's impossible to see it even with a magnifying glass.