What are the evidences that the boards could be electrolytic
Nickel/Immersion gold?  I doubt that combination is any good as etch resist.
I would cross section some traces. If the nickel/gold covers the sidewall of
the traces, then it should be ENIG. If the nickel/gold only covers the top
of the traces with some overhanging, then your guess could be at least half
correct. Unless they have some magical way to put full body electrolytic
nickel plating after etch. 

Regards,
 
Jason Zhao


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Pete Houwen
Sent: Wednesday, July 23, 2008 10:20 AM
To: [log in to unmask]
Subject: Re: [TN] looking for ENiG photos

I may have found the answer - 

Could this be an electrolytic Nickel/Immersion gold? The board uses 8 mil 
minimum conductor patterns?

I also just found out they took our Shanghai engineer to a differenet plant
for 
the site inspection, and that the cross section and solderability testing on
one 
of the boards was done on a non-RoHS board with Sn/Pb solder, who knows 
what they actually sent us.

Is this some odd universe I've been transported to?  Does anyone else have
to 
deal with such runaround?

Pete

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