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Reply To: | DesignerCouncil E-Mail Forum. |
Date: | Mon, 14 Dec 1998 07:36:40 -0700 |
Content-Type: | text/plain |
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Mark Koitmaa wrote:
> 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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This is a very common/valid request, if the number of different
part numbers on the board out-number the number of different
part numbers the pick-and-place machine can handle. With too
many different part numbers on one side, the pick-and-place
machine must be set up for multiple runs to complete the
assembly, this adds lots of cost!
--
Alan Dale Hall
Design Engineer(PWB Layout) Honeywell Inc. - CAS
Phone: 602-436-1974 P.O.Box 21111 Phoenix AZ 85027
FAX: 602-436-2252 Beeper:302-4603 E-mail: [log in to unmask]
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Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
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