The IPC-7351 series provides the foundation for creating CAD land patterns (footprints).
The result was catastrophic waste: re-spun circuit boards, delayed product launches, and mysterious field failures in everything from car brakes to pacemakers. ipc-7351c pdf
: For a comprehensive look at how the standard governs footprint creation and pad geometries, the guide on Ultra Librarian provides a clear breakdown of its 15 major sections. The IPC-7351 series provides the foundation for creating