At 05:34 PM 8/14/2003, Ralph Garvin wrote:
I am creating a pcb foot-print for an MLP-11 package.
 The '11'th pin is defined as a large area under the package with
 4 contact pads on the edge.
 What is the procedure for creating the irregular shaped area as a pin??


Protel doesn't directly support more than a very few shapes for pads. The workaround is to create a complex pad shape by adding line or fill primitives to a pad in the footprint. You can use pretty much any size pad as the pad itself, as long as it is smaller than the desired final area; it will be buried in that area. Since it is a surface mount part, there is no complication involving hole location.


You also need to add primitives to the solder mask layer, if the pad is to be free of solder mask.

There is a small complication in that the additional copper may not be assigned its net properly, if this is so, you'll see it with error indicators or in a DRC. It may be necessary to run the tool that assigns nets to primitives by connection to pads, or to manually edit the primitives to the net, possibly with a global edit -- and for this, the footprint may need to be unlocked temporarily (never leave footprints unlocked!).



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