Custom Design rules Examples

[paulvdh]

Clearance between via’s and tracks of the same net.

(rule "via_not_in_pad"
    (condition "A.Type == 'via' && B.Type == 'pad'")
    (constraint physical_hole_clearance (min 0.01in))
    )

Via to pad same net clearance constraint?

Is there a way to create a custom design rule to check for vias getting too close to pads of the same net? I have looked everywhere and there doesn’t appear to be one. I don’t know about you all but I’m not comfortable with trusting my vigilance to see if a via gets too close to a pad such that I have to designate to the manufacturer that that via is “via-in-pad” and thereby increase the cost of my board. I avoid via-in-pad unless it’s necessary for thermal or high-density reasons. The probl…