ENIG and OSP are not the only options for lead-free soldering processes. Immersion Tin and Immersion Silver are also available, as well as hot air solder leveling (HASL) using lead-free solders. 
 
Blair

>>> [log in to unmask] 04/26/05 04:41PM >>>
Good Afternoon all,

Our company will be switching over to lead free and we have received sample pcb's from one of our vendors and one board has gold (ENIG) for the traces and one has copper (OSP). From some of the emails I have seen on Technet it appears that gold is what most of companies are going to be using? Is this correct or is there some other materials we should be looking into to use? Is the gold more reliable than the copper?
Any input would be greatly appreciated.
Regards, Bob




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