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January 2000

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Subject:
Re: Standard No. of via drill cycles
From:
Linda Copeland <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 7 Jan 2000 07:21:05 -0500
Content-Type:
text/plain
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text/plain (62 lines) 
Paul, Can't tell you about the drill cycles but I do know there is no via
hole fill requirement for a class 3.
Linda Copeland
Raytheon
Chesapeake, Va.

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Paul Klasek
> Sent: Friday, January 07, 2000 12:01 AM
> To: [log in to unmask]
> Subject: [TN] Standard No. of via drill cycles
>
>
> 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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