Hard or soft does not matter in a diffusion point of view. Hard gold
means it's alloyed, which is not the same as a chemical reaction with a
product that has different properties than the original elements. So,
doped or not doped  Gold, the diffusion of gold in Tin will take place,
the gold atoms are free to move. This question comes repetedly, so I'll
send the ternary isopleth for Steve's wall, so that everyone can see the
Wt% vs alloys.
Inge
 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dan Skweres
Sent: den 24 maj 2007 17:25
To: [log in to unmask]
Subject: [TN] Gold content in solder joints

Question for you folks.... I'm aware of embrittlement issues with too
much gold in solder joints. The question came up here whether or not
there is a difference between "hard" gold content verses "soft" gold
content? Thanks in advance!
Dan 

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