Method and apparatus for determining surface roughness of metal foil within printed circuits

摘要

In one embodiment, a method includes capturing an image of a piece of a printed circuit board (PCB) that includes at least one inner layer having a metal foil portion. The piece of the PCB includes a cross-section of the inner layer having the metal foil portion. The method also includes determining a surface roughness of the metal foil portion, wherein determining the surface roughness of the metal foil portion includes processing the image.