Bill,

Controlling the thickness of OSP's is not an uncommon problem. Some OSP's
are more difficult to control than others. The technique used to measure
thickness is also critical to accuracy and reliability of thickness.
Evaporation and by product reaction play biggest role in ability to control
thickness. The type of acid medium used will also affect the solubility thus
thickness. The product you are using has a long history of thickness control
issues. Contact me direct if you would like to discuss in more detail

Rob.
nal Message-----
From: Bill Davis <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Monday, June 15, 1998 10:00 AM
Subject: [TN] Entek OSP


>Yo techies! Has anyone out there had experience with Ethone-OMI's Enteck
OSP? We're using it here as we have some 0.4mm pitch devices & have had
problems managing the thickness of the OSP. We see residues which causes
non-weeting on the pads, & the gold edge connector still had enough OSP left
to cause connection problems. Any help would be greatly appreciated...
>
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