Tag Archives: CAD parts libraries

More Cautionary Tails

Posted on January 16, 2013 by Duane

I recently wrote about the horrors of LED marking variations. Unfortunately, LEDs aren’t the only place to find inconsistencies in our world. Another part to keep a close eye on is the ubiquitous three-terminal voltage regulator. For just short of … Continue reading →

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0.4mm Pitch BGA Redux

Posted on January 4, 2011 by Duane

I’ve written about it before, and again here. When dealing with new technology parts, it’s really important to look up all of the manufacturer’s component information that is available. I’m going to quote from the Texas Instruments document “PCB Design … Continue reading →

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AT Tiny is Tiny

Posted on November 16, 2010 by Duane

I just spotted a note on Twitter, from SiliconFarmer, referring to the ATtiny44A coming in a 0.45 mm pitch QFN as well as a 0.5mm pitch MLF package. (In practice, an MLF is the same as a QFN, by the … Continue reading →

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Mismasked PCB

Posted on October 15, 2010 by Duane

Personally, I think the PCB and stencil above is prettier with the green showing through. It breaks up all of the boring silver color. It adds some life in … … Unless you are a chip wanting to be soldered … Continue reading →

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Parts Substitution Gone Big

Posted on December 16, 2009 by Duane

I’ve mentioned some cautions with parts substitutions before; wrong V values on barrier or flyback diodes, counterfeit parts and things like that. Here’s another example of something to watch out for if your supply is tight and choices are limited. … Continue reading →

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