Tag Archives: Eagle CAD

Beagle CAD Paw Prints

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

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 , , | Comments Off

Centroid/XYRLS/Pick-and-Place

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