Advanced Micro Devices - Moderated (AMD) Message Board

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 199.30

-7.3%

2:48 PM EST

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: combjelly who wrote (207987)	8/8/2006 11:35:00 PM
From: Joe Senesac	Read Replies (1) of 275872

Thanks, combjelly. So when a boat has moved to the next machine operation, are the individual wafers removed from the boat and/or pod, then replaced when done? What environment are they exposed to when the tool opens the pod, and are there operators present at this point? In any cleanroom environment, the major source of contamination is usually humans given that machines are designed and working correctly. As good as gowning practices are, humans still need to be able to see out of the gown, and there is therefore a small opening from an operator to shed from. Plus tyvek or other synthetic gowns are really good, but still shed small amounts of particulate. I would imagine that the environment in a pod is pretty close to class 0, and that the majority of the contamination events, when they do occur, are during the processing and not during transport from stage to stage. Sorry guys if this is somewhat OT - but I think it is a useful discussion in understanding the field. Pharmaceutical processing is normally carried out in class 100 areas, and it is fascinating to think how much cleaner semiconductor processing sometimes is. Joe

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next