SMD pad with opening

Question

I need to create an SMD padstack that has an opening, like this: 
 
 When I draw this pad as a shape and try to save it, I get `ERROR(SPMHCS-3): Shape symbol cannot have a void in a shape.`. After a web search it seems to be a limitation of Cadence at the moment, so I tried doing two pads like this: 
 
 and then in my footprint incorporating the two pads and give them the same pad number. In this case, however, I get 
 ``` WARNING(SPMHA1-301): Create symbol DRC errors exist. Duplicate pin number 1. WARNING(SPMHA1-298): Create symbol duplicate pin numbers. 
 ERROR(SPMHA1-291): Create symbol has been aborted. 
 ``` 
 What is the way to implement this?

excellon1 · Answer

Hi I think on this, one would need the exact datasheet, is it available ?. I took a look at that connector, The manufacturer does offer footprints for it but you have to contact them. That particular connector in the link needs a step drill to drill the board as the connector is basically press fitted into the board. On connectors that have a center pin either SMD or TH, You could treat the part as a one pin part only and draw the body as a shape around the pin. In the pcb editor you would assign a net to the shape - Gnd. Doing this would simplify part creation as from the perspective of the PCB Editor there is only one pin even though the body exists too as a shape. One thing on these connectors. It would be good to ask the MFR is there a particular board material that is needed to meet spec. Depending on the intended frequency a standard FR4 board may not work very well above 1Ghz. Best Regards.

JCTEYSSIER0 · Answer

In such case, i will: 
 - use a small round smd pad somwhere in copper area* 
 - add a static shape on "ETCH/TOP" 
 - add static shape on "PACKAGE GEOMTRY/SOLDERMASK"_TOP and "PACKAGE GEOMTRY/PASTEMASK_TOP" if required (think so) 
 The ETCH shape will automaticaly get the pins's net while placing component: works well for me. 
 If netlist modification occure and component already placed, you will probably have to change shape net affectation manually.

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SMD pad with opening

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