SMT - SMD To Corner

Now reading version 20.2. For the latest, read: SMT - SMD To Corner for version 21

Rule category: SMT

Rule classification: Unary


This rule specifies the minimum distance from the edge of a surface mount pad to the first routing corner.

All design rules are created and managed within the PCB Rules and Constraints Editor dialog. For a high-level view of working with the design rules system, see Constraining the Design - Design Rules. For detailed information regarding how to target the objects that you want a design rule to apply to, see Scoping Design Rules.


Default constraints for the SMD To Corner rule.Default constraints for the SMD To Corner rule.

  • Distance - the value for the minimum permissible distance from the SMD pad edge to the start of the first routing corner.

How Duplicate Rule Contentions are Resolved

All rules are resolved by the priority setting. The system goes through the rules from highest to lowest priority and picks the first one whose scope expression matches the object(s) being checked.

Rule Application

Online DRC and Batch DRC, as well as the interactive router. The interactive router will obey this rule by maintaining a straight pad exit trace emanating from the pad center on any allowed "entry angle" (see SMD Entry rule), at least to the distance specified.

The SMD to Corner rule defines the distance to the first corner. Use the SMD Entry rule to specify where the route is allowed to enter
(or exit) the SMD pad.


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