PCB Libraries Forum : Terminal Density Level of BGA footprints https://www.PCBLibraries.com/forum/ Sun, 05 Apr 2026 10:17:12 +0000 Fri, 18 Feb 2022 13:34:48 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=3058 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[Terminal Density Level of BGA footprints : The 3-tier density levels for...]]> https://www.PCBLibraries.com/forum/terminal-density-level-of-bga-footprints_topic3058_post12206.html#12206 Author: Tom H
Subject: 3058
Posted: 18 Feb 2022 at 1:34pm

The 3-tier density levels for BGA are broken down by Ball Diameter and the pad size % reduction. 


 

You can change the Courtyard setting in "Tools > Options> Terminals > SM Grid Array > BGA"


 
]]> Fri, 18 Feb 2022 13:34:48 +0000 https://www.PCBLibraries.com/forum/terminal-density-level-of-bga-footprints_topic3058_post12206.html#12206 <![CDATA[Terminal Density Level of BGA footprints : I&#039;m wondering if it&#039;s...]]> https://www.PCBLibraries.com/forum/terminal-density-level-of-bga-footprints_topic3058_post12205.html#12205 Author: asdfasdfa
Subject: 3058
Posted: 18 Feb 2022 at 1:17pm

I'm wondering if it's intended that there isn't an option for setting the Density Level on BGA parts, i.e., Least, Nominal, and Most. I can't remember for sure, but I thought in older versions of Footprint Expert you could.

I'm working on a tight machine-assembled board, so I've been using Least for all my footprints. I just made a new BGA footprint and the courtyard looks rather large; maybe that is the size the courtyard needs to be. The package of the part is 1.4 by 0.9 mm (it's a small 6 pin logic gate), and the courtyard looks about 4 times the size of the part.

On a 0402 resistor it looks like the courtyard is 0.1 mm, but on this part it was about 0.5 mm out.

The package family is the TI YZP: https://www.ti.com/lit/ml/mxbg347/mxbg347.pdf
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