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Date: | Wed, 21 Aug 96 10:45:54 PST |
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Have you made any changes in your processing (scrubbing?) prior to
photoresist? Very small surface imperfections out of electroless can
be greatly amplified by electroplate.
______________________________ Reply Separator _________________________________
Subject: Copper Pattern Plating Nodgles
Author: [log in to unmask] at corp
Date: 8/20/96 6:13 PM
I am experienceing a fine dusting of nodgles that show up anywhere on the
circuits especially on ground plane areas. The nodgle is dome shaped, higher
than the surrounding area and very spherical in shape. Bright acid copper,
everything in spec.I have eliminated deburr, resist (as I see it on panel
plate also only with much less frequency of occurance).Not a pit from air
inpengment a dome. Suspect a fungus in the brightener ???
Wondering if anyone else has seen anything similiar
Thanks
Wm.M.
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