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June 2002

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Subject:
From:
Guy Ramsey <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 26 Jun 2002 11:42:06 -0400
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Temporary solder mask is a little better insulator than kapton tape. Don't
let solder get into the vias. What is the dwell time and contact width? Can
you speed up the conveyor without messing up the process yields?

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Henry Rekers
> Sent: Wednesday, June 26, 2002 10:08 AM
> To: [log in to unmask]
> Subject: [TN] Reflow on Wave.
>
>
> Does anybody have any suggestions on avoiding reflow of a 357 ball bga on
> the wave?  I'm dealing with a 6 layer board and I've kept the
> preheat as low
> as possible.  Kapton tape doesn't seem to help.  Has anybody tried any
> custom manufactured sheilding?
>
> Thanks.
>
> Henry J. Rekers
> Manufacturing Engineer.
>
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