Bill and Technetters,
	I'm sure I am showing my ignorance when I ask this, but if I don't, how else can I learn.  My questions is this.  What is the advantage of having the palladium layer in there?  Does it have something to do with the plating operations?

Best Regards

John Guy
American Competitiveness Institute (EMPF)
714 N. Senate Ave.
Indianapolis, IN 46202-3112
Tel:	(317) 655-EMPF x130
fax:	(317) 655-3699
e-mail: 	[log in to unmask]


----------
From: 	Barthel, Bill[SMTP:[log in to unmask]]
Sent: 	Thursday, June 12, 1997 7:45 AM
To: 	'TechNet'
Subject: 	Assy: Au/Pd/Ni/Cu PCB Finish


Does anyone have experience with assembly and long term reliability of 
surface mount and through hole solder joints made on PCBs coated with gold 
over palladium over nickel over copper?


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