Feedback on 28mm f1.8G, please

Started Jul 11, 2012 | Discussions thread
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Ronj2
Ronj2 Senior Member • Posts: 1,195
Re: look at samples

Pb free Finish coatings and solder can cause all kinds of issues even right out of the box. whiskers can grow in a matter of days. What ever your thoughts are on this issue it makes for some very interesting reading. Reliability will be reduced in Pb free electronics until a solution comes along. After 60yrs of study the mechanism is still not known. Manufacturers are going to down play this as they have no choice in the matter.

http://nepp.nasa.gov/whisker/reference/tech_papers/2006-Leidecker-Tin-Whisker-Failures.pdf

http://nepp.nasa.gov/whisker/

http://nepp.nasa.gov/whisker/reference/tech_papers/2011-kostic-pb-free.pdf Page 41

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Sincerely

Ron J

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