Stencil printing for 15.7 mil qfp's| 2 March, 2004
I will be purchasing a printer for our company. I'm considering a used printer with 2d post inspection. Is it worth putting money into the vision inspection or would we be better off buying a separate automatic optical inspection machine downline?
Stencil printing for 15.7 mil qfp's| 3 March, 2004
2D will give you on-line contrast inspection for paste coverage on the land. I would go with 2D on the printer when comparing to an AOI that will do the same contrast inspection. There are systems out there that will check paste hieght and area coverage to measure volume. They are much more $$ but give a more meaningful inspection. Most go w/ 2D on the printer.