The correct pattern is determined by the mating connector. You should
find the recommended pattern in it's datasheet, like this for example:
<
http://www.edac.net/file_library/series/39_737.pdf>
If there is nothing in the datasheet for your connector ask the
supplier, or eyeball it. There are some differences between the
different brands of connectors, some have one contact, some have them
split in two, etc..
Remember that gold plating the edge connector usually requires you (or
the board shop) to extend the tongues out and run them together in a
shorting bar, so they can be contacted for gold plating. Have a look
at an extremely bad image here:
<
http://t2.gstatic.com/images?q=tbn:d91SlFCXorXWaM:http://www.ettech.com.tw/English/picture/FR-4,%20Edge%20plating,%20Sink%20Milling,%20Medical%20PCB-1%20.JPG>
ST
On Fri, Feb 12, 2010 at 6:09 PM, Steve Greenfield <alienrelics@...> wrote:
> I've done quite a bit of Googling, and all I find are diagrams and measurements of edge-connector sockets. Or just the outer dimensions of the PCB edge-connector. I am looking for the specs for trace width, spacing, and length.
>
> Any ideas?
>
> Thanks,
> Steve Greenfield
> Electronic Engineering Technician student
> Electronic Technician 20+ years
> CET Computers and Consumer Electronics
> IPC-A-610D CIS Specialist
>
>
>
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>
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