Do you know what ENEPIG is 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
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