PCB Libraries Forum : Through-hole Pad to Pad Clearance https://www.PCBLibraries.com/forum/ Mon, 06 Apr 2026 17:31:08 +0000 Wed, 08 Oct 2025 08:25:14 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=3555 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[Through-hole Pad to Pad Clearance : Footprint Expert has a Calculator...]]> https://www.PCBLibraries.com/forum/throughhole-pad-to-pad-clearance_topic3555_post14171.html#14171 Author: Tom H
Subject: 3555
Posted: 08 Oct 2025 at 8:25am

Footprint Expert has a Calculator for autogenerating land patterns from standard package dimensions. Due to all the package dimensions including terminal dimensions can determine the pad stack size and pad stack collisions. This is what the Through-hole Minimum Pad to Pad Clearance was intended for. Two pads should never touch each other when 'Calculating' a land pattern. 

For all non-standard packages, Footprint Expert has FP Designer for creating land patterns from the component manufacturers datasheet. If you use the manufacturers recommended pattern, there will be instances where 2 or 3 pads touch each other. Even through-hole and surface pads can intersect. Adding a minimum pad to pad clearance to FP Designer doesn't make any sense. 

There are rules for Calculating patterns. There are no rules for mfr. recommended patterns.

]]> Wed, 08 Oct 2025 08:25:14 +0000 https://www.PCBLibraries.com/forum/throughhole-pad-to-pad-clearance_topic3555_post14171.html#14171 <![CDATA[Through-hole Pad to Pad Clearance : I know I request this feature,...]]> https://www.PCBLibraries.com/forum/throughhole-pad-to-pad-clearance_topic3555_post14169.html#14169 Author: m.elsayed
Subject: 3555
Posted: 07 Oct 2025 at 10:53pm

I know I request this feature, but need your support how this feature work in tool,
also is it will applied also for parts created by FP Designer tab?
]]> Tue, 07 Oct 2025 22:53:18 +0000 https://www.PCBLibraries.com/forum/throughhole-pad-to-pad-clearance_topic3555_post14169.html#14169