/products/eagle/b/blog/posts/pcb-land-patterns-for-surface-mount-packages-and-eagle-librariesHi, If you look at the Interconnnecting and Packaging Electronic Circuits (IPC) document IPC-7351, it appears that the footprint (PCB land pattern) required for any given SMD component will depend on the soldering method used in the underlying P...en-USTelligent Community 12https://community.element14.com/products/eagle/b/blog/posts/pcb-land-patterns-for-surface-mount-packages-and-eagle-librariesThu, 08 Sep 2016 17:04:04 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:25682b3f-bd3e-4cfb-a55d-514fb807ecabshabaz0<p>Hi John,</p><p>&nbsp;</p><p>The supplied libraries are ok for general hobbyist use if checked first, but ordinarily people create their own footprints, to suit their needs (and intended use-case, reliability needs, etc). Some hobbyists appear to use the packages/footprints without question, which is not good.This applies to any CAD system, not just EAGLE. That doesn&#39;t mean the supplied ones are all useless, but not all will be useful.</p><p>Having said that, I quite like the R_EU and C_EU sets of packages in the supplied RCL library, I have my favourites there and they get used all the time for generic sized SMT Rs and Cs. Anything else, I&#39;ll create from scratch.</p><p>You can also write tools to speed up your workflow (in any language of your choice) because of the script execution capability in EAGLE. For any SOIC/TSSOP/QFP/QFN style package, I auto-generate the land pattern to exactly suit the specific requirements, so takes me less than a minute.</p><img src="https://community.element14.com/aggbug?PostID=1981&AppID=69&AppType=Weblog&ContentType=0" width="1" height="1">