Kathy,

I don't have any insight for you, however I am thankful that you shared your
'purchasing' issue. And all along I thought we were the only ones who had a
purchasing department that works for the vendor and not for us!!

Richard Hamilton
Clemar Mfg. / Rain Bird
[log in to unmask]

> -----Original Message-----
> From: Kathy Palumbo [SMTP:[log in to unmask]]
> Sent: Wednesday, July 28, 1999 10:12 AM
> To:   [log in to unmask]
> Subject:      [TN] Dewetting Issues
>
> Currently we are experiencing a lot dewetting issues on our HASL coated
> boards.  When tested in house they failed IPC solderability testing, and
> when tested at two outside independent labs they failed solderability
> testing at both labs.  The problem we are having is our purchasing
> department still thinks we are full of it and will not support us in
> returning the boards to the board house, and naturally the board house is
> taking our purchasing departments side and will not take the boards back
> now.
>
> Both our purchasing department and the board house are claiming "there is
> no
> long term reliablity issues with dewetting".  Naturally my M.E. and Q.E.
> group disagree with their statement.
>
> What I am looking for is long term reliability studies regarding dewetting
> on typical HASL coated FR4 PCB material.  Does anyone out there know of
> any
> such studies, or can you steer me in the right direction?
>
> Thanks for you help in advance!
>
> Sincerely,
> Kathy Palumbo
>
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