Do you know what is ENEPIG in PCB?
What is ENEPIG？ENEPIG-Electroless Nickel Electroless Palladium Immersion Gold is a surface finish for Printed Circuit Boards.ENEPIG works well with lead free and conventional eutectic solder alloys.This is the best way for gold wire bonding. Advantages for ENEPIG:
Here is an ENEPIG PCB ,60GHz Transceiver DC Board for Columbia University.
Thickness:Ni:3-5um +/-5%, Pd:0.1um +/-10%, Au:0.05um +/-10%
Comparison of Surface Finish Performance
Mullilayer standard stack up
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