We deal with a very high end fabrication PCB shop in Belgium that is done good when it comes to technology driven boards. You can email me off line if interested!
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Thank you, Jim Mahoney 
Quick Turn Flex Circuits, LLC 
Applications Project Manager 
P# 603-821-7071
M# 603-305-6250 
www.quickturnflex.com
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-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of David Baldwin
Sent: Wednesday, July 14, 2010 4:35 PM
To: [log in to unmask]
Subject: [DC] Looking for High Tech Board Shop - Chip-On-Board

DC Members:

I am looking for a high tech board shop that can manufacture a very tight PCB.

I am designing a PCB that has a Chip-On-Board.  It has 568 pads, all 
jammed on two sides.  These all need to be wire bonded to the PCB 
onto a 3-row configuration.  It's far from ideal, but it is what I 
have to work with.  As a result, I am using a 12 mil via with a 6 mil 
drill near the bond pads.  Blind / buried vias are not practical for 
this design.  I can't make this 4 rows or spread things out any 
further as we will exceed the capabilities of the wire bonder.

This design has 3 mil trace / space.
100 ohm differential pairs.
12 layers.
0.048" thick.
12 mil via, 6 mil drill.

Any recommendations for a board shop that can do something like this 
would be greatly appreciated.

Thanks,

David Baldwin


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