Feedback on 28mm f1.8G, please

Started Jul 11, 2012 | Discussions thread
Ronj2
Senior MemberPosts: 1,195Gear list
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Re: look at samples
In reply to David314, Jul 15, 2012

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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