Tag Archives: Eagle CAD

Beagle CAD Paw Prints

Posted on December 4, 2012 by Duane

Unfortunately, I can’t generically hand out Eagle CAD QFN footprints without knowing the specific part, but I can illustrate the areas I initially had difficulty with. All of the traps that used to get me seem blindingly obvious now, but … Continue reading →

Posted in Screaming Circuits Blog | Tagged , , | 1 Comment

QFN Custom Stencil Layer in Eagle

Posted on November 17, 2011 by Duane

It’s been said over and over that you don’t want to leave the solder paste opening wide open for a QFN center pad. A 50 to 75% paste coverage will get the best results. With full coverage, your QFN can … Continue reading →

Posted in Laying It Out, Screaming Circuits Blog | Tagged , , | Leave a comment

Centroid/XYRLS/Pick-and-Place

Posted on April 20, 2011 by Duane

Call it what you may, but surface mount assembly robots need this magic file to determine where to place your components and how to orient them. We call it a centroid. Others may call it something else, but it’s all … Continue reading →

Posted in Laying It Out, Screaming Circuits Blog | Tagged , , , , , | 7 Comments