Hi Greg,
There have been some reports indicating some creep-fatigue advantage for SN62
over near-eutectic SnPb in accelerated testing; others showing none. In any
case, even the studies showing some superiority for SN62 indicate only a slight
improvement of little significance. However, SN62 is somewhat stronger than
near-eutectic SnPb and creeps slower—thus, whether even this slight superiority
in accelerated testing translates to anything at all for product reliability
is rather doubtful.
Werner
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