• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. Allegro X PCB Editor
  3. Check shape only full contact 25% same net VIA

Stats

  • State Suggested Answer
  • Replies 4
  • Answers 1
  • Subscribers 161
  • Views 7702
  • Members are here 0
More Content

Check shape only full contact 25% same net VIA

Tung Huynh
Tung Huynh over 2 years ago

The edge of a via is touching the edge of a same-net shape. The center of the via is not within the shape.

The shape is not voided to remove the small copper sliver. The vias need to have full contact, not thermal ties. 

I usually check for these on my designs and adjust the shapes.

I want an automatic shape void or DRC solution.

Thanks 

  • Sign in to reply
  • Cancel
Parents
  • steve
    0 steve over 2 years ago

    Try enabling the Same Net DRC rules for Via / BBVia and see if that helps. They need to be enabled in both CM and Setup - Constraints - Constraint Modes. Once enabled it will void the via if it's causing an issue. The view below shows where the shape boundary is, if it crosses the centre (origin) it covers the shape, if it doesn't it voids it. 

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Reject Answer
    • Cancel
  • avant
    0 avant over 2 years ago in reply to steve

    Thanks Steve,

    Dan

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
Reply
  • avant
    0 avant over 2 years ago in reply to steve

    Thanks Steve,

    Dan

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
Children
No Data
Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.

© 2025 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information