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November 2007

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Subject:
From:
Louis Hart <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Tue, 20 Nov 2007 14:26:39 -0500
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Ben, I would guess that a more precise statement might include a phrase 
like 'vacuum did not accelerate moisture withdrawal, within the limits of 
measurement'. Outgassing of moisture would, I think, be linear with a 
decrease in environmental water vapor pressure, while it would increase 
exponentially with temperature. Some expert in transport phenomena is 
welcome to correct or clarify the preceding.

Lou

Louis Hart
Technology Transfer Specialist
National Technology Transfer Center
316 Washington Av
Wheeling, WV 26003
304-243-2553

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"Gumpert, Ben" <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
11/20/2007 01:30 PM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
"Gumpert, Ben" <[log in to unmask]>


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Subject
[TN] Vacuum Baking of MSDs






Anyone want to make a comment (to support or refute) on the following
statement regarding moisture sensitive parts?

"Contrary to some claims, vacuum was not found to accelerate the rate
that moisture is withdrawn from a plastic package."

From the following article:
http://circuitsassembly.com/cms/content/view/5610/95/

Ben

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