[time-nuts] RoHS Solder

SAIDJACK at aol.com SAIDJACK at aol.com
Thu Sep 24 22:24:54 UTC 2009

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/) 
In a message dated 9/24/2009 06:15:04 Pacific Daylight Time,  
wpxs472 at gmail.com writes:

Interesting comments regarding. lead free solder. I was not aware of  the 
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.
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