I would appreciate anyone sharing their thoughts on vacuum drying of PCB's. 

What conditions do you use? (Time, temp and vacuum)

I realize it can be used to reduce required peak temperature but is there potentially any time reduction benefit to using vacuum?

I saw a paper from the "Electronic Components and Systems Division within German Electrical and Electronic Manufacturers´Association Working Group", entitled 

 "Recommendation & Guideline Values for drying for bare PCBs" 

The offered a rather paltry reduction in drying time of 60 minutes from 8 hours if vacuum was used. Doesn't seem like much of a benefit. 


Rich Kraszewski/PLEXUS 


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