DIPAK SENGUPTA
PACKAGE AND ASSEMBLY PROCESS DEVELOPMENT
ANALOG DEVICES
TEL: 	617-937-1629
FAX: 	617-937-1700
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Original Text
>From [log in to unmask], on 6/27/96 12:34 PM:
To: <[log in to unmask]>

Hey folks,Ok, we all know that certain surface mount components are 
moisturesensitive.  This means that they may suffer damage during 
reflowsoldering conditions due to moisture expansion.We are currently 
attempting to develop a company policy regarding theselittle beasties, but are 
having some difficulty.  The problem is compounded by the fact that no one 
packaging standardis followed universally.  We have component bags come in 
witheverything from simple moisture warning labels to labels with 
specificinstructions about humidity and temperature exposure -- anything but 
theIPC's recommended 1-6 classification. So my question is this: how are other 
companies handling thesecomponents?  Also if you're using Vidmar type cabinets, 
please specify what gasyou're using to keep them dry (I'm trying to determine 
if dry compressedair is adequate).Thanks!Dirk BellamyManufacturing 
EngineerCurrent Electronics

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