Hello Ken,

 From my perspective as a 'layout guy' I do the following for boards that
are going to be manufactured in arrays (and large quantities).
I supply the board manufacturer with the design as a 1-up.
I also supply a panellisation drawing, that details the arraying of the
boards into an assembly pallet, 'mouse bite' requirements and assembly /
ICT tooling holes.
To get to this point requires interaction with the board fab shops and
assembly people to satisfy all of their requirements and capabilities.
Sometimes it may be that the board shop can array more than one of these
assembly pallets on their manufacturing panels, and I leave that up to them.
This way, stencilling and wave fixturing is always common.
Small quantities of prototype boards that are unlikely to see volume
production, I wouldn't bother.

regards,

Phil.


At 09:21 10/03/00 -0800, you wrote:
>Assembly folks / layout guys / Stencil guys,
>We received a fab drawing and gerber for single board but in reality it's a
>panel or an array. My design guy says that leave it to fab house on
>selection of panel size. It's a common practice. He thinks that different
>fabs work with different materials and processes.
>
>I do not agree with him for the following reasons. What do you think guys,
>particularly in assembly house!
>(1) Stencil making will be a trouble one as person is going to order based
>on gerber unless someone tell him else he has to order another one.
>(2) What if the job is shifted to different fab vendor. We have to start
>complete process again if panel size is different.
>(3) Machine programming modification,
>(4) New wave fixturing.....and many more
>
>Any valuable inputs will be appreciated.
>
>re,
>ken patel
>______________________________________________________
>Ken Patel                       Phone:  (408) 490-6804
>1708 McCarthy Blvd.             Fax:    (408) 490-6859
>Milpitas, CA 95035              Beeper: (888) 769-1808
>
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Phil Dutton C.I.D.
Senior CAD Technician
IPC Certified Interconnect Designer

Vision Abell Pty Ltd
Second Avenue, Technology Park,
Mawson Lakes.  SOUTH AUSTRALIA  5095
================================
Phone : (08) 8300 4400 (reception)
Fax :           (08) 8349 7420
email:          [log in to unmask]
Internet Page:  http://www.vsl.com.au
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