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Countersink/ Counterbore Padstacks

Printed From: PCB Libraries Forum
Category: Libraries
Forum Name: Footprints / Land Patterns
Forum Description: [General or a CAD specific issues / discussions]
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=1757
Printed Date: 30 Oct 2025 at 8:06am


Topic: Countersink/ Counterbore Padstacks
Posted By: tatets
Subject: Countersink/ Counterbore Padstacks
Date Posted: 13 Sep 2015 at 5:39pm
How do you define/create countersink or counterbore NPTH padstacks? Do we have a design rule or standard like placing regular pads or anti-pads or keepouts?


Replies:
Posted By: Tom H
Date Posted: 14 Sep 2015 at 10:12am
Many PCB Design tools do not have a countersink hole in the pad stack.
 
You need to call this out in your Fabrication Drawing as a Flag or Note.
 


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