What are Footprints and Land Patterns
OshPark Panel image from OshPark.com
You've no doubt seen the various metalized shapes and plated holes that are abundant on an unpopulated printed circuit board. The size, shape, and orientation of each metalized pad on a printed circuit board is unique to the parts they are designed to hold. Since most parts are standardized, these pad designs are standardized as well. This book introduces the pad designs and naming scheme so you choose the right one in your next design. And we're also going to incorporate a never-before-seen pad design for our battery selector circuit.
"A dozen designs a day are placed on hold at Advanced Assembly due to a mismatched pattern. DFM checks do not look for this error, but DFA checks do."