If you can keep all parts on just one side, there would be a significant
savings. Unless there are so many different part numbers being used on this
board that the pick and place machine can't hold them all, there would be
no savings that I can see from doing what he wants you to do.






Mark Koitmaa <[log in to unmask]> on 12/11/98 04:00:57 PM

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 To:      [log in to unmask]

 cc:      (bcc: Charles Barker/US/I-O INC)



 Subject: [DC] Double Sided Part Placement









I have been asked by an engineer that I am working with to restrict the top
side/bottom side placement of parts according to part values (all parts are
0805's).  For example if I place a 10K resistor on the bottom side, all
10K's should also go to the bottom side.  He does not want me to mix parts
of the same value between two sides.

He tells me this will significantly reduce assembly costs.  I have never
heard of such a thing.  Is he correct?  I believe the extra layout time
will negate any potential savings in assembly setup.  Any comments?


Mark Koitmaa
TechServ
http://www.techservinc.com

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