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Date: | Fri, 19 May 2006 07:12:26 EDT |
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In a message dated 5/19/2006 6:09:56 AM Eastern Daylight Time,
[log in to unmask] writes:
How is the plating process done in PCB fabrication ? pls help me to
understand
Suganthi,
I am afraid that more than one metal is plated in PCB fabrication - copper,
nickel, tin, silver, gold, solder eutectic. And worse, there are three ways
to plate - electrodeposition with DC current, electroless with chemical
reduction, and immersion with metallic replacement.
We need for you to be a bit more specific as to the metal because several of
these can be deposited by more than one technology, above. Are you talking
about the copper in the through holes in the board?
Denny Fritz
MacDermid, Inc.
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