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Technology Stocks : Intel Corporation (INTC)
INTC 36.61-3.4%10:37 AM EST

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To: Tony Viola who wrote (66164)10/9/1998 10:53:00 PM
From: Elmer  Read Replies (2) of 186894
 
Re: "If, after it gets through some percentage of the wafer, the yield is less than a programmed amount, testing stops and the whole wafer is thrown away. They call these wafers 'Mavericks'."

Almost every company now has SPC guidelines that set an upper as well as a lower limit on yields. Wafers aren't just thrown away if they yield outside these limits because it could be a tester or probecard problem and not necessarily the wafer itself. It would simply be flagged for disposition by an engineer at any company. Why throw away a wafer because the probecard has a worn probe?

Re: "Most companies probably package and sell die from any wafer that has any good ones at all."

This is an Intel thread. Shouldn't you be posting this on the AMD thread? <ggg>

EP
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