Spacing
For general spacing of component assembly to other objects on the PCB, go to the Design for Assembly > DFA Constraint
Set > Spacing worksheet.
You can click the cell in the upper left corner to create your own DFA Constraint Set, however, we already have
4 created for us in the four rows shown below.
They mostly have spacing for Pastemask to other objects like Pastemask, Via pad, etc. (seen further on the right of the image
above).
TIP: Double-click the Pastemask to column above to expand the view if yours is not showing it.
This section covers general spacing, which has mostly been taken over by the 3D domain within the Constraint Manager.
Pastemask
Finally within design for assembly (DFA), we have checks for how much pastemask is on a pad (Pastemask to pad %), if
pastemask is missing and the distance of your pastemask to other mask materials.
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OrCAD X Constraint Management Guide