The first link below is a terrific, in depth view of the subject but I'm confused by Table 2.1 that shows the relative conductivity of gold as being greater than copper.  I've always understood that gold is not as good a conductor as copper, it just has superior contact resistance properties, which can creates mis-conceptions.

A look at Wikipedia's Conductivity page as well as all other metal conductivity/resistivity charts confirms copper's superior conductivity.  Is there something about electroformed or wrought versions of copper when compared with gold (???-unknown fab process) that would validate the chart?  Or is the chart just messed?

Gregg

-----Original Message-----
From: Gumpert, Ben [mailto:[log in to unmask]]
Sent: Friday, October 10, 2008 5:35 AM
To: [log in to unmask]
Subject: Re: [TN] PCB Manufacturing Processes

Try these:

www.prc.gatech.edu/academics/elpkg/pdf/module3.pdf
www.standardics.nxp.com/support/documents/logic/pdf/an10365.pdf

Ben

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of roland jaquet
Sent: Friday, October 10, 2008 8:21 AM
To: [log in to unmask]
Subject: [TN] PCB Manufacturing Processes

Dear Technetters,

I am seeking documents that would explain PCB manufacturing processes
for student engineers As well as some basic for assembly

Thank you for your help

Meilleures salutations
Very Best Regards
Roland

www.PCBspecialist.com
Roland Jaquet
Switzerland
T+41-79-203-3723

 Active Member of the European Institute of Printed Circuits

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