mike


just out of curiosity - try taking section and see if the nodules rise from
the surface of the copper topography - u'll have to make a makeshift sorta
3-d thing - slant it somehow when looking. if it does - try doing a trace
metal analysis with an AA for tin in solution. if your above 20ppm - u might
be co-depositing tin with in your copper. if that;s the cas - try dummying at
about 3-5 asf for about 8 hrs and do another tin analysis.

regards

Richard Fudalewski

Florida CirTech

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