I doubt if there is any such thing as "Proven Reliability"  It is a
statistical measure of a varying situation.  Probability does not equal
"Certainty".   The reference to high reliability is also relative to some
lesser reliability.  Both of which are now shown to be sufficient for the
application with some risk factors.






                      Werner Engelmaier
                      <[log in to unmask]        To:       [log in to unmask]
                      OM>                      cc:
                      Sent by: Leadfree        Subject:  Re: [LF] : technical question: annealing time and
                      <[log in to unmask]         temperature
                      >


                      02/12/2004 10:29
                      PM
                      Please respond to
                      "(Leadfree
                      Electronics
                      Assembly Forum)";
                      Please respond to
                      Engelmaier






Hi Keith,
What exactly do you mean by "proven technology?" To my knowledge, none of
the
LF-solders have 'proven reliability' for high-reliability
applications--they
may or may not have such reliability, but it is far from 'proven.'

Regards,
Werner Engelmaier

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