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July 1997

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14 Jul 97 09:56:39 EDT
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From: Stella Neyman@01635@Lectron_RH, on 7/11/97 4:03 PM:
To: INTERNET[[log in to unmask]]

Hello dear fellows:
We are PCB contract manufacturer.  We had a case,  when the PCBs  were 
shipped overseas with no sealed plastic.  It was CEM1 material that 
absorbed  the moisture really fast.  I know that moisture inside the 
laminate could cause a lot of trouble, such as outgassing during curing, 
wave soldering etc. 
But I can not find any formal recommendations or standards how to package 
PCB.  Should we request vacuum sealed bags with the desiccant?  Is the zip 
lock bag with no desiccant good enough to prevent the moisture absorption?
Please, share you experience and knowledge.  All inputs would be greatly 
appreciated.

Stella Neyman
Lectron Products

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