Paul,
Use the board outline for the whole board, including the flex. The flex
layers are sandwiched between the rigid layers, and are the size of the
entire board. Use a documentation layer, I called it rigid, to define your
rigid outlines. Use the rigid outlines on the fab drawing for dimensioning.
These outlines can also be used on the gerber files for the rigid only
layers, if you wish. Don't forget to add tooling holes for each rigid
section.
I used PADS for a 7 section, 8 layer, multi-impedance rigid-flex, it folded
up inside a box, and the rigid layer was the only additional documentation I
needed.
David Ricketts
Pertek Engineering
Voice: 949-475-4485
Fax: 949-475-4493
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]]On Behalf Of Paul
Noonan
Sent: Wednesday, January 23, 2002 6:44 AM
To: [log in to unmask]
Subject: [DC] Questions On Flex - Rigid board using Power PCB
Hi All,
I am in the process of looking into a flex-rigid board design which should
consist of 2 small 4 layer Rigid PCB's joined by a flexible circuit . I have
not designed any flexible boards or hybrids before.
My questions are mainly about what I need to do in my Layout Tool (Pads
Power PCB) . The board I described above consists of 2 rigid and 1 flexible
board , does this mean I have 3 separate board outlines in my Layout tool ?,
or am I better off with 3 separate PCB files and 3 sets of gerber files and
then using an assembly drawing to show how they should all join-up
together ?
It looks like in Power PCB that I can only have 1 Board outline I can't have
one PCB file with 2 or more separate board outlines.
If anyone can give me a few pointers on my approach to laying out this board
especially anyone who may have used Power PCB for flex-rigid boards I would
appreciate any comments you may have .
Many Thanks
Paul Noonan
Design Engineer
Eurologic Systems Ltd
mailto:[log in to unmask]
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