The >27 inches of mercury is preferred and the closer you can get to 100degC the better. Remember that in a vacuum you should get minimal if any oxidation. We used to do this overnight but work I’ve read indicates that 2 hours is minimal.

 

Rich Kraszewski

Advanced Manufacturing Engineer - KEG

Phone:  812.634.4281

Pager:  812.481.3492

 

 

-----Original Message-----
From: Macko, Joe @ IEC [mailto:[log in to unmask]]
Sent: Monday, October 27, 2003 3:37 PM
To: [log in to unmask]
Subject: [TN] vacuum baking populated circuit cards

 

Hello Fellow Technets,

I have been asked to research baking out populated FR-4 type circuit boards at lower temperatures using a vacuum oven.  I do not have any info on baking boards under a vacuum and what the considerations need to be, or how much vacuum is required.  Any help will be appreciated.  thanks

joe

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