Re: strange issue on Agilent 54641D MSO
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The really sad thing about the "science" behind the move to lead free solder is that it only takes 1% lead to mitigate the tin whisker problem. I believe that Dr. Howard Johnson wrote about?this years ago. Silver can have the same issues with whiskers but I think that is only in pure form. I think there was a NASA report on that as well I read probably 15 to 20 years ago.
Think about how much lead is in a car battery. I would bet that the number of those in landfills far exceed the amount?of lead used in solder. It has been proven that the lead in the ground does not leach out anyway. It seems that the scientists in Europe that pushed the lead free solder did not really do the proper research and now we are stuck with this problem.
Personally I really don't like the lead free solutions very much. If I am building something for myself I still prefer 63/37.
IIRC there was a formulation by Nihon that had nickel in it that was also said to abate the whisker problem.
I found Dr. Johnson's writings on Lead Free Solder:
Sam
Sam Reaves
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Sam Reaves