Question

You are using koh etching to define a 200 mm thru-hole in a 100 wafer. What should the dimensions on your mask be if you are using a: a) 400 mm thick wafer b) 600 mm wafer. What would be the dimensions of the thru-hole be if you used the mask intended for the 400 mm thick wafer on the 600 mm thick wafer?

Answer 1

Answer:

358mm

Explanation: