Joe,
Insufficient cleaning of shorts is a failure that opens a lot of
questions that may be sensitive, like ball park overheating etc. No
wonder there is no open statistics.
Inge
-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Joe Fjelstad
Skickat: den 18 juni 2007 16:59
Till: [log in to unmask]
Ämne: [TN] Failure statistics breakdown data?
Good (time of day here) colleagues,
Does anyone know of a statistical base that identifies assembly failures
and
traces them to causes with some sort of breakdown?
That is failures traced to assembly only (e.g., opens, shorts,
insufficient
cleaning, etc.), failures related to PCB manufacturing only (e.g., PTH
failure, opens, shorts, CAF, etc.) and failures traced to the
components themselves
of any cause (ESD, overheating, thermal cycling failure, etc.).
I realize that this may be a sensitive topic for some folks and am thus
open
to taking any such data off line.
However any perspective based on experience and "guessimates" from the
general audience is encouraged and most welcomed to see if there is any
kind of
consensus of experience and how close it matches with the the industry's
general
perceptions.
Rough (in the same city at the ball park) estimates are OK.
Thanks in advance for any form of light that can be shed while I fumble
around in the dark feeling for the "main lightswitch". ;-)
Best to all,
Joe
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