Also to consider:

   - Panel fiducials
   - Specify max number of X-out boards per panel.
   - X-out fiducials if the assembler wants them.  (Thats a fiducial on the
   panel edge for each board, that can be marked out to tell the pick-n-place
   not to populate a bad board.)


On Mon, Jan 3, 2011 at 5:15 PM, Carl VanWormer <[log in to unmask]> wrote:

> I have created a file ( http://www.cipher.com/Panelization02.jpg) that
> is my guess at a PCB panel that will meet the following goals.
>
> 1.       A bunch of boards to reduce handling costs.
>
> 2.       Not too much waste.
>
> 3.       Side rails to keep the system from being too "wobbly" (that's a
> technical term).
>
> 4.       Routed slots between boards to minimize twisting forces during
> hand de-paneling.
>
>
>
> The circuit boards will be made from .062" FR-4, and are each
> 2.875"x1.125".  the surface mounted parts will be placed, then fed to
> the IR re-flow oven for the first pass of processing.  Then, the
> through-hole connectors will be added at both ends of each board and the
> panel will be wave soldered to attach the connectors.  The board will go
> through the wave in the direction of the long axis.
>
>
>
> My picture has interior single lines representing V-Scores, and thick
> gray lines representing routed slots between pairs of boards. My goal is
> for hand separation of the boards, with minimal forces on the chips on
> the interior of the board area.   My hope is that one of the long side
> rails (green) can be broken off, then each pair of boards can be snapped
> from the other long side rail (green), then the pairs of boards can be
> snapped apart.
>
>
>
> I am making a lot of guesses from things I've seen before.  I'm looking
> for guidance on how to specify panels that will be considered "good" by
> all parties involved in the processing chain.  Are there published
> documents that can help me look like an expert (without too much work on
> my part)?
>
>
>
> Thanks,
>
> Carl
>
>
>
>
>
>
>
>
>
> Carl Van Wormer, P.E., AE7GD
>
> Senior Hardware Engineer
>
> Cipher Systems
>
> 1800 NW 169th Place, Suite B-100
>
> Beaverton, OR  97006
>
> Cipher Systems (503) 617-7447 x 5163
>
> Direct Line (503) 425-5163
>
> [log in to unmask] <mailto:[log in to unmask]>
>
> This message may contain confidential and/or proprietary information,
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>
>
>
>
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-- 
----------------------------------------------
Gary A. Crowell Sr., P.E., CID+
Linkedin <http://www.linkedin.com/in/garyacrowellsr>
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  KE7FIZ <http://www.arrl.org>


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