Via Naming Convention

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Isn't it time to drop the zz from the following via naming conventinon:  via-xx-yy-zz  where xx is the pad diameter, yy is the hole diameter and zz is the anti-pad diameter?  We haven't been using negative planes in years and I believe most EDA tools have gotten away from them too.  Thoughts.

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
bnoel Members Profile Send Private Message Find Members Posts Add to Buddy List Active User Joined: 14 Mar 2014 Location: Western NY Status: Offline Points: 14	Post Options Post Reply Quote bnoel Report Post Thanks(0) Quote Reply Topic: Via Naming Convention Posted: 13 Dec 2016 at 2:05pm
	Isn't it time to drop the zz from the following via naming conventinon: via-xx-yy-zz where xx is the pad diameter, yy is the hole diameter and zz is the anti-pad diameter? We haven't been using negative planes in years and I believe most EDA tools have gotten away from them too. Thoughts.



Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5719	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 13 Dec 2016 at 2:40pm
	Where is a via naming convention at? The anti-pad is for both Positive and Negative planes and it represents a very important value in the pad stack, especially for vias. If the anti-pad diameter should not be larger than the pad annular ring + trace space. You do not want to run high speed signal traces over a plane anti-pad. The plane is the signal return path and trace couples with the plane. In the via pad stack, you have to define the pad, hole, anti-pad and direct plane connect (flood over) for a normal copper pour plane flood.
	Stay connected - follow us! X - LinkedIn