OK, last one, at least for now.
What is the prevalence of laser drilled holes relative to convential
drilled holes? Is it used a lot or only in certain applications? Is
there a size limitation where laser drilling works better (e.g. Microvia
drilling) than other areas? Thin laminate vs. thick laminate?
Here is what we say currently:
· Some drilling is done via the use of lasers. If this is not
tightly controlled, the resin can pyrolize and re-deposit on nearby
surfaces. The resin system will have been degraded by heat and the
redeposited material may interfere with subsequent plating. This is often
a problem with laser drilling of holes.
Your thoughts?
Doug Pauls
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