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DRC Driven Same Net Spacing Clearance Working for Through Pins but Not SMD Pins

l3hrbonini

As stated in the title, DRC driven clearance appears not to work for SMD pins, but does work for through-pins.  I can add properties for clearance and type to the SMD pin and that will work just fine, but relying on the constraint and global parameters just results in a full contact connect.  I've looked through global parameters and constraint manager and everything looks correct to me, and is the same for both through and SMD pins.  Is there somewhere else I should be looking?

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  • excellon1

    You might want to verify that the actual DRC mode for Same Net Spacing is enabled. On the cm tool bar click on analyze > Analysis Modes to verify that.

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  • excellon1

    You might want to verify that the actual DRC mode for Same Net Spacing is enabled. On the cm tool bar click on analyze > Analysis Modes to verify that.

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  • l3hrbonini
    in reply to excellon1

    Ok, checked that.  Everything under Same Net Spacing "SMD Pin to" is set to "On".  I've worked with OrCAD for a number of years and haven't seen this particular behavior before.

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