IPC-7351, titled "Generic Requirements for Surface Mount Design and Land Pattern Standards," provides the mathematical formulas, tolerances, and design rules needed to create consistent PCB footprints.
Embedded the original formulas into an interactive software calculator format to accelerate automated library creation.
Large pads for high-reliability applications (military/medical) where rework and hand-soldering are common. ipc-7351c pdf
The Complete Guide to IPC-7351C: Understanding the Standard for PCB Land Pattern Design
: Rewrote specific chapters (such as Chapters 8 and 9) to provide extensive detail on newer component families and added color to graphic images for better clarity. Zero Orientation Standard The Complete Guide to IPC-7351C: Understanding the Standard
Designed for high-density, miniature devices like smartphones, where space is at a premium and micro-soldering processes are highly controlled. The Shift in IPC-7351C
IPC-7351 utilizes three "Density Levels" to help designers balance board space with manufacturing ease: Rely on component datasheets, not old library parts
The IPC-7351 series provides the foundation for creating CAD land patterns (footprints).
Rely on component datasheets, not old library parts.