plating processing - nickel immersion, electrolytic, hard

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jayleung

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gold plating pdf

Hi, I have a question about the PCB finish plating processing:

For the electroless nickel immersion gold plating (ENIG), is the processing like:

plating->etching->solder mask

For the electrolytic gold plating, is the processing like

etching->plating->solder mask

And can the hard-gold plating be done by electrolytic?

Thanks.
 


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    jayleung

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