Do not know the moisture content method's name.  But one way that I know to check the moisture in a material is to dry a coupon for several days while on an electronic scale and till the weight stabilizes. Then expose it to humidity in a control environment while on the same scale. The scale must provide electronic output to a computer and the data is plotted until the coupon is saturated and gains no more weight.
        Regards,
        Ramon


> -----Original Message-----
> From: Stolar, Paul W [SMTP:[log in to unmask]]
> Sent: Wednesday, April 14, 2004 9:28 AM
> To:   [log in to unmask]
> Subject:      Re: [TN] PCB moisture content
>
> We had a serious problem with moisture in our boards. But we use
> polyimide with high temp solders.
>
> You will have to evaluate for your own application.
>
> Paul Stolar
> Materials/Reliability Engineer
> Manufacturing Reliability Lead Engineer
> Baker Atlas
> 713-625-5376
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Guy Ramsey
> Sent: Wednesday, April 14, 2004 6:56 AM
> To: [log in to unmask]
> Subject: Re: [TN] PCB moisture content
>
> Not to my knowledge. There is J-STD-020 and a brief section in HDBK-001.
> But
> neither set a standard for moisture content.
>
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]] On Behalf Of Rey Degollado
> > Sent: Wednesday, April 14, 2004 7:25 AM
> > To: [log in to unmask]
> > Subject: [TN] PCB moisture content
> >
> > Hey Guys,
> >
> > One of our customers is asking on what is the industry
> > standard for pcb moisture content and the method of checking.
> > Can somebody please help? Should there be standard reference
> > (book, etc) you can recommend.. Better.
> >
> > Thanks.
> >
> > Rey Degollado
> >
>
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