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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