New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Insufficient annular ring for several vias #1

Open

arkorobotics opened this issue May 3, 2020 · 0 comments

Owner

arkorobotics commented May 3, 2020

A large number of vias have ~5mil annular ring. Oshpark's copper specifications state a minimum of 4mil, leaving a margin of 1mil.

Upon post-fab inspection, most vias look acceptable, but these margins are unnecessarily tight. Several vias appear to be holding on by a thread.

Recommend action: Increase via annular ring minimum to >=8mil.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment