Machine performance and repeatability continue to
improve. However, newer processes are more demanding,
so traditional machine calibrations may not always be
sufficient. New tools that allow machines to be
characterized based on empirical data will help to bridge
this gap. These tools - in the form of personality
parameters - should be tuned at the most sensitive part of
the bond cycle, which is first bond.
Machine-side improvements can only go so far.
Therefore, to achieve portable processes, an understanding
of the variations in the equipment and the material is
impoaant. The variation in material needs to be held to a