PCB Libraries Forum : DFN "L" "N" "M" values https://www.PCBLibraries.com/forum/ Tue, 07 Apr 2026 05:20:55 +0000 Mon, 23 Mar 2015 13:33:11 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=1616 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[DFN "L" "N" "M" values : Thanks Tom. ]]> https://www.PCBLibraries.com/forum/dfn-l-n-m-values_topic1616_post6586.html#6586 Author: lalexman
Subject: 1616
Posted: 23 Mar 2015 at 1:33pm

Thanks Tom.]]> Mon, 23 Mar 2015 13:33:11 +0000 https://www.PCBLibraries.com/forum/dfn-l-n-m-values_topic1616_post6586.html#6586 <![CDATA[DFN "L" "N" "M" values : On all &#034;Bottom Only&#034;...]]> https://www.PCBLibraries.com/forum/dfn-l-n-m-values_topic1616_post6585.html#6585 Author: Tom H
Subject: 1616
Posted: 23 Mar 2015 at 1:31pm

On all "Bottom Only" terminals, LGA, CGA, BGA, 2, 3, 4 pin DFN, PSON, PQFN there is no Toe, Heel or Side. There is a periphery, meaning that whatever the value is, it's the same on all sides.
 
And once a component package is less than 1.6 mm the 3-tier system is thrown out and only one pad size is preferred.
 
]]> Mon, 23 Mar 2015 13:31:34 +0000 https://www.PCBLibraries.com/forum/dfn-l-n-m-values_topic1616_post6585.html#6585 <![CDATA[DFN "L" "N" "M" values : On a 2 leadDFN it looks like...]]> https://www.PCBLibraries.com/forum/dfn-l-n-m-values_topic1616_post6584.html#6584 Author: lalexman
Subject: 1616
Posted: 23 Mar 2015 at 1:23pm

On a 2 lead DFN it looks like there are no values you can enter for the toe,side, and heel ? Is this correct ? Also the default values for density level for the Flat No-Lead Side length <1.6MM are all the same for "L" "N" "M". Is this correct ? ]]> Mon, 23 Mar 2015 13:23:04 +0000 https://www.PCBLibraries.com/forum/dfn-l-n-m-values_topic1616_post6584.html#6584