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Technology Stocks : Intel Corporation (INTC) -- Ignore unavailable to you. Want to Upgrade?

To: AK2004 who wrote (127343)	2/13/2001 4:58:41 PM
From: Joe NYC	Read Replies (1) \| Respond to of 186894

Albert, I think the way "yield" is used is based on the number of good die from a wafer / total number of die. So let's say the total number of 100 mm^2 die on a wafer is 200, and yield is 60% you get 120 good die from wafer. Now let's say you move to 200 mm^2 die, roughly you are down to 100 total die per wafer. If the yield remains 60%, you are down to 60 good die. The 60 good die vs. 120 good die is is reduction of yield, using the English language meaning of the word, but the semi people use the word "yield" for something else. Now, the yield (as the semi people use it) will certainly go down as you move to larger die. It is related to defects on the wafer, and with larger die, the same number of defects is going to ruin higher percentage of bigger die than smaller ones, so yield will have to go down. How much, I have no idea. Joe