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January 2000

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Subject:
Standard No. of via drill cycles
From:
Paul Klasek <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 7 Jan 2000 16:00:53 +1100
Content-Type:
text/plain
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text/plain (31 lines) 
Dear fab folks ;
could you give me indication of "standard" No. of cycles on small via holes
drill sizes ,
on carbide and steel bits please ,
and would there be a difference of utilization habits between say US and
SEA/CHINA/SOB regions ?

Facing patches of cracked vias , suspecting blunt drills > uneven barrel
plate .

And class 3 , is there via fill (solder) mandatory ?

Thanks a lot

Paul Klasek
ResMed

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