Quoting Rich : > 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" s...@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist