Altium NEXUS Documentation

Working with the SMD Neck-Down Design Rule on a PCB in Altium NEXUS

Created: March 22, 2017 | Updated: September 26, 2019
All Contents

Rule category: SMT

Rule classification: Unary

Summary

This rule specifies the maximum ratio of the track width to the SMD pad width, expressed as a percentage.

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.

Constraints

Default constraints for the SMD Neck-Down rule.Default constraints for the SMD Neck-Down rule.

  • Neck-Down - the percentage value for the maximum permissible ratio of track width to SMD pad width. Entering a larger value will allow for the use of greater width track.

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.

 

Found an issue with this document? Highlight the area, then use Ctrl+Enter to report it.

Contact Us

Contact our corporate or local offices directly.

We're sorry to hear the article wasn't helpful to you.
Could you take a moment to tell us why?
200 characters remaining
You are reporting an issue with the following selected text
and/or image within the active document: