Hi
Ed,
I have plenty
first-hand experience with all three types of foil. My opinion is that
they all do equally well on fine line (5 mil line/spacing and under)
works.
Double treat
material is primarily used by small, quick turn shops for eliminating the
preclean and oxide processes. DSTF really has no advantage over untreated
copper if you don't give up preclean and still micro-etch in the subsequent
oxide process. For fine line works, imaging is the most important
process. Materials, treated or not, have little to do with what graphics
definition you put on them. Once you weed out the exposure problems
and operator errors you will have reasonable yields.
Yu-Shan
Han, Ph.D., P.E.
Lead One
Technology, Inc.
Seattle,
WA
(206)
368-8429
Hi all,
I am looking for feedback on the preferred
foil treatment for use on .005" lines/spaces innerlayers. Doubletreat, Reverse
treat, no treat with oxide, some other foil??????? All recommendations and
reasons why would be appreciated?
Thanks for your help.
Ed
Cosper