For class 3, the minimum internal annular ring cannot be less than 1 mil. Theexternal annular ring cannot be less than 2 mil. It is measured from the inside of the PTH barrel to the edge of the land pad and may have a20%reduction of the minimum annular ring in isolated areas due to...
Zero Component Orientations As the list indicates, the standard is divided almost in half with general design information and specific component type details. There are also a large number of figures and tables and even a land pattern calculator to aid you in creating PCB footprints that adhere...