Gary,
I'm not sure what others will reply to this... but my estimate would be
about 620 Hours to do this board.
I realize that may seem like an enormous amount of time... even with using
an Auto-Router... but that's what my PCB Layout Calculator crunched out for
me.
It is a very dense board, and has a lot of 'restrictions'.
By the way... I have NO idea if this is 'standard' in the 'industry'. I'm
sure you'll get some hot-shot to quote 2 weeks... but I'd be wary of
anything like that.
Regards,
James Jackson
Oztronics
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]]On Behalf Of Gary
Crowell
Sent: Friday, May 20, 2005 12:24 PM
To: [log in to unmask]
Subject: [DC] How would you quote this board?
Since we are a 'captive shop' here at Micron, we have only a very shaky
frame of reference with which to judge how our work compares with other
layout designers. One of our designers was worried that we (and
himself, specifically) might be falling behind what might be considered
'standard' in the industry. I was hoping some of you might respond with
the man-hour estimate you might quote for the following board:
2800 components; top & bot placement allowed, few placement restrictions
~20,000 pads/pins, 95% SMT
Usable area: 130 in2
Routing layers: 8 internal routing, top&bottom
Plane layers: 10 power/gnd planes; 6 voltages distributed on split
planes
Trace/space: 4/6 mil
Via drill/pad: 10/20 mil
4200 nets; ~80% involve matched lengths and/or differential routing
Major components: 1020 ball 1mm BGA, 1508 ball 1mm BGA, 1072 ball 1.27mm
BGA, 2x SODIMM sockets, 12 HD connectors
All digital; no analog
A full-feature SPECCTRA router is available.
Thanks
Gary Crowell CID
Micron Technology
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