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December 1998

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Subject:
From:
"Chan, Marcelo" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 10 Dec 1998 10:34:35 -0500
Content-Type:
text/plain
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text/plain (52 lines)
check the warping of the BGA PWB carrier pre and post reflow.... as the PWB
warps, it may be pushing the solder...another check point may be your stencil
design/process....

Marcelo

        -----Original Message-----
        From:   Poh Kong Hui [SMTP:[log in to unmask]]
        Sent:   Thursday, December 10, 1998 10:07 AM
        To:     [log in to unmask]
        Subject:        [TN] BGA short

        Hi Technetters,

        I am facing a weird problem.

        One of the board that we make, is having short underneath the BGA.
        However, every single short is always at one of the 4 corners of
        the BGA.

        Is there anyone facing such an issue ? Could someone advise me how
        to solve.

        Poh

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