I agree, press fit is a good technology, some time the best when dealing
with back planes 5 mm or more.

the finish of the PCBs in press fit should be discussed and controlled.


Best  Regards

ROKAH Reuven




                      Steve Gregory
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                      Sent by: TechNet         Subject: Re: [TN] Soldering Robots
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                      16/11/2003 03:33
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                      Please respond
                      to SteveZeva





Ramon,

What kind of press-fits have you worked with? There are many different
types
out there that are VERY reliable! To make a general statement like you've
made
about press-fits, to me, shows that you haven't worked them very much. Can
you share any specific data that shows them to be un-reliable?

I only say that because we build various assemblies for Northrop Grumman
that
use press-fit connectors...

-Steve Gregory-
Dave:
        They require a special tool to support the board and a press
capable
of  about 2000 - 3000 lbs thrust.   The stress that the press fit
connectors
put on each and every barrel is significant.  It leaves the barrel open for
debris, moisture and some people do not want CC inside of it. So to mask
the
board to prevent CC from going inside the barrels, can be a bear. Press fit
connector do not allow much  for mistakes.  I am partial to using solder
doughnuts or solder robot.
        Regards,
        Ramon.

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