Quoting Rich <
rgrazia1@...>:
> I have spent some time in Chinese semiconductor manufacturing. I found that
> some had very low yields. I found that keeping contamination out of the
> clean rooms was in some cases a challenge. Running the clean room below
> "clean" can result in below speck product.
It's perhaps worth noting that with LEDs they sometimes have two
grades-- one for
export to first-world countries, and another for local toy manufacturers and
sale to India, Bangladesh etc. where a 20% failure rate and wide variation is
tolerated. Naturally the price of the third-world-rated floor sweepings is
considerably lower.
Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
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