low yield bullcrap

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Last updated 4:52 AM on 6/3/26
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5 Terms

1
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What is Crystal Yield Yc and its yield %?

Material in the boule relative to the starting amount of electronic grade silicon.

~ 50%

2
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What is Crystal-to-slice Yield Ys and its yield %?

Material left after grinding the boule and sawing it into wafers (accounting for kerf losses).

~ 50%

3
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What is Wafer Yield Yw and its yield %?

Wafers surviving processing relative to the starting quantity; 90%.

4
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What is Multiprobe Yield Ym and its approximate range?

The proportion of chips passing the multiprobe needle test; ranges from < 10% to > 90%.

5
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What is Final Test Yield Yt and its approximate range?

The proportion of chips that pass the final functional test after packaging; ranges from 90% to 95%.