Die
singulation requires some kind of mounting medium to hold the substrate
as it is being cut. This is usually either tape on a film frame
or wax on glass, although mounting directly on a vacuum chuck will
work in some cases. The cut can then be a scribe for subsequent
breaking or a thru cut. Scribing is convenient, but usually results
in more chips and rough edges. Thru cuts on tape give tighter tolerances
on the final chip size, but may result in some bottom side chipping.
Wax mounting on glass normally gives the best edge quality, but
requires demounting and cleaning.
Whatever
your requirements, give us a call at Precision Surface Technology
to lay out a program to meet your specifications.
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