This is one of those things that just seems to be so stunningly obvious that you should have thought of it yourself every time you make a dense footprint (say 0.65mm BGA or less) … but I’m ashamed to say it never even crossed mine, despite having made several BGA and CSP footprints and boards. Trying to make some tight BGA pads with a specific diameter? 0.3mm in Eagle may not turn out to be the 0.3mm you’re expecting on your PCB, and Andrew Zonenberg explains why in PCB Fab Characterization on his excellent blog Silicon Exposed.
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — UPS begins testing emergency drone deliveries with CyPhy
Wearables — Make that prop functional
Electronics — Have you met Charlie?
Biohacking — The MATIA Project Assists The Blind and Those with Memory Loss
No comments yet.
Sorry, the comment form is closed at this time.