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October 1998

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Subject:
Hot: Trace width and air gap for 1mm pitch BGA
From:
Ken Patel <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 27 Oct 1998 12:02:45 -0800
Content-Type:
text/plain
Parts/Attachments:
text/plain (29 lines) 
BGA Design/process Guru,
We are designing board with 1mm (39.37 mils) pitch 672 pin BGA. I have the
following questions which I need urgently.

(1) What is the recommended pad size?
(2) What the recommended via size?
(3) What will be the trace width and air gap if I need to pass 2 traces? We
are limited in number layers so we want to go for double traces instead of
single trace between the pads.

re,
Ken Patel
______________________________________________________
Ken Patel                       Phone:  (408) 490-6804
1708 McCarthy Blvd.             Fax:    (408) 490-6859
Milpitas, CA 95035              Beeper: (888) 769-1808

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