Hello All:

When applying immersion gold onto 4mil wide x 8mil long pads for wire
bonding, the gold finish result left much to be desired. In a string of pads
adjacent to each other, we find a shiny surface of gold next to a very dull
gold finish. In some cases the color is brown.

What would cause such an effect in the  same plane?
Any input would be greatly appreciated.

Charlie


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