Has anyone managed to find an image of "popcorning" of plastic component
packages that they are willing to share?
> -----Original Message-----
> From: Stolar, Paul W [SMTP:[log in to unmask]]
> Sent: Friday, December 06, 2002 2:29 PM
> To: [log in to unmask]
> Subject: Re: [TN] Vacuum
>
> Steve,
> I am thinking of a low vac, 20-30 in Hg. Most of our parts are plastic, so
> we have to worry about popcorning.
>
> "Common sense" makes us think that vacuum will 'pull' out moisture. But
> isn't the only criteria be that the surrounding atmosphere be very dry.
> One
> could get that by vacuum or N2. Heat will be needed, but we also don't
> want
> the parts to se too much heat, especially to meet the J-STD-033
> requirements.
>
> Paul
>
>
>
>
>
> -----Original Message-----
> From: Creswick, Steven [mailto:[log in to unmask]]
> Sent: Friday, December 06, 2002 1:19 PM
> To: [log in to unmask]
> Subject: Re: [TN] Vacuum
>
> Paul,
>
> I know that I am not Guy, but with sufficiently low vacuum one could
> reduce
> the boiling point to effectively room temperature (or lower). What degree
> of vacuum are you speaking of? :-)
>
> Steve
>
> -----Original Message-----
> From: Stolar, Paul W [mailto:[log in to unmask]]
> Sent: Friday, December 06, 2002 2:14 PM
> To: [log in to unmask]
> Subject: Re: [TN] Vacuum
>
>
> Guy,
> Which ones?
> Why with vacuum and not with heating?
>
> Paul
>
>
> -----Original Message-----
> From: Guy Ramsey [mailto:[log in to unmask]]
> Sent: Friday, December 06, 2002 12:39 PM
> To: 'TechNet E-Mail Forum.'; 'Stolar, Paul W'
> Subject: RE: [TN] Vacuum
>
> Yes.
> Moisture sensitive components can be damaged by vacuum.
>
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]] On Behalf Of Stolar, Paul W
> > Sent: Friday, December 06, 2002 11:33 AM
> > To: [log in to unmask]
> > Subject: [TN] Vacuum
> >
> >
> > Has anyone ever heard of vacuum damaging components?
> >
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