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Reply To: | TechNet E-Mail Forum. |
Date: | Fri, 7 May 1999 15:42:52 -0400 |
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Hi Jack and all,
We like to add nonfunctional pads to a design for two reasons:
1). To prevent burning of isolated runs/pads when we pattern plate
2). On multilayer boards, we do it on inner layers to strengthen
the plated through holes
Hans
Air Force Material Command - We keep them flying!
~~~~~~~~
Hans M. Hinners WR-ALC/LYPME Bldg. 640
Materials Engineer 380 Second Street,
Suite 104
Manufacturing Eng. Sec. Robins AFB GA 31098-1638
912-926-1970 (Voice) 468 - 1970 (DSN) 912-926-7974 (Fax)
[log in to unmask]
> It seems that most fabrication vendors prefer to remove the unconnected
> pads
> from inner-layers, in fact we do it for them before we send out the
> gerbers.
>
> But I thought I overheard Gary Ferrari say there was some test results
> that
> showed the board to be more reliable with all pads included, but I don't
> know where to find it or who did the testing.
>
> Does anyone know if it is significant enough to re-evaluate our process?
>
> Jack
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