Another article I will see if I can find it took a different slant. Since it can take two to three years for a whisker to grow enough to cause a short. It is a big plus for the consumer industry. Finally a built in failure mechanism to force the consumer to have to buy again, and again, and again.
-pete > Hi, > > yes, tin whiskering is a huge issue. Wikipedia has some nice (and > shocking) pics on it. > > One of the best sources of information is the Nasa Tin Whisker page: > > _http://nepp.nasa.gov/whisker/_ (http://nepp.nasa.gov/whisker/) > > bye, > Said > > > > In a message dated 9/24/2009 06:15:04 Pacific Daylight Time, > [email protected] writes: > > Interesting comments regarding. lead free solder. I was not aware of the > tin > whisker problem. We went lead free here at work several years ago. I > really > don't like the lead free solder we have to use on several accounts. As > mentioned, you don't get nice shiny joints. They look pretty much like > cold > joints. We had to do some rework on some products and the lead free stuff > doesn't rework well at all. We ended up having several field failures. > Not > good for customer relations. The processing temperatures are much higher > than with eutectic and sometimes the boards come out of the oven all > brown > and crispy. Good thing most of what we make gets molded in plastic. I > don't > use lead free in the lab. One of the many reasons is to keep customers > from > putting engineering samples in equipment to be sold. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
