Help all -

I need to know if there is a predictable tolerance on parts placement
AFTER REFLOW.  I am fairly sure the pick-and-place equipment we" use is
stated to be repeatable to 0.005" with an angular accuracy of 1/2
degree, but that is before reflow is there a metric or formula for
determining true position tolerance of component placement for post
reflow?  The reason I am asking is that our mechanical design group has
designer a bezel for a display panel that has a true positional
placement requirement of 0.006 on our finished array of 246 large SMT
LEDs.

Thanks for the help,

Jeffrey A McGlaughlin, CID
Engineering Designer
Battelle Memorial Institute
Columbus Ohio
http://www.battelle.org
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