: Most land protrusion, best for easy soldering and rework. Level B (Median) : Nominal land protrusion for general use.
Unlike its predecessor (IPC-7351B), the "C" revision introduced several modern design shifts:
One of the most powerful features found within the IPC-7351C PDF is the concept of . A frequent mistake made by junior designers is assuming there is only one "correct" footprint for a component. IPC-7351C dispels this myth by offering three distinct mathematical models for land pattern calculation:
: Moves away from strictly rectangular courtyards to shapes that follow the component body, allowing for higher component density. Updated Naming Convention