Lee Ritchey of speedingedge.com wrote this great article (pdf) about plated through holes, also known as “vias”. It’s a technical but very informative look at something we use every day. Folks who design their own PCBs may not even realize just how involved the whole process is.
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Oh this is great! It’s one thing I’ve never understood. Scratch that. It’s one of a zillion things I never knew!
I just received my first professionally made PCBs the other day and was wondering how the heck vias were done- thanks!