Issue link: https://resources.pcb.cadence.com/i/1521395
3. Core Spacing DFA Constraint Set Index Ref Rule Description Usage Image 1 - Component Body to All Pin Pads Defines the minimum allowable distance between edge of a component instance to another component's SMD pin pad. (DFA_COMP_PIN_COMPBODYOTHER) Etch 2 - Component Body to All Holes Defines the minimum allowable distance between edge of a component instance to a mounting hole. (DFA_COMP_ TO_HOLE) Etch 3 - Component Body to Edge Fingers This constraint defines the rule for minimum allowable distance between edge of a component instance to an edge finger. Edge fingers are the pins of a finger connector. A finger connector is detected by the prefix used to define the component class in the symbol classification UI, which essentially assigns value for the attribute named 'DFA_DEV_CLASS'. If the prefix of the class name is "FCON_", that symbol will be treated as finger connector. (DFA_COMPBODY_ FINGER_CONN) Etch 4 - Pastemask to Pastemask This constraint defines the rule for minimum allowable distance between pastemask to pastemask. Example shape on a pastemask layer to pastemask on SMD pin etc. (DFA_PASTEMSK_TO_PASTEMSK) Non-etch 5 - Pastemask to Via Pad This constraint defines the rule for minimum allowable distance between pastemask to via pad. Example pastemask on a thru pin to via pad etc. (DFA_ PASTMASK_TO_VIA) Non-etch 4. Core Pastemask DFA Constraint Set Index Ref Rule Description Usage Image 1 - Pastemask to Pad Defines how much of a percentage smaller than the copper pad the pastemask area can be smaller than the pin pad. The size of pastemask should be at least as big as the given percentage of pin pad size. (DFA_PASTEM_ RATIO_SMD) Non-Etch 2 - Missing Pastemask Reports missing pastemask pads On SMD pins. (DFA_ PASTEMASK_MISSING_SMD) Non-Etch 3 - Pastemask to Other Mask Types The minimum allowable distance from the pastemask edge to the soldermask edge. (DFA_PMSK_SMSK_ OPENING_RAT) Non-Etch 16 www.cadence.com OrCAD X DesignTrue DFM Rules Guide