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John Baraclough
United Kingdom
129 Posts |
 Posted - 21 Jun 2013 : 05:06:08
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I have been asked to lay out a connector board which has six "Legs" and a central "Body". Each of the legs has 35 surface pads and will probably be a double sided flexible circuit with bonded stiffeners at the "Foot" ends. A transition from flexible to rigid is possible at this end but probably unnecessary.
However, to cope with the routing and the surface mount terminal pins (Samtec TMM series), the central "Body" will probably have to be a six layer rigid board with buried vias.
This seems to require different board outlines for different layers and I can't see a way to achieve this.
Please could someone give me some hints on how to design for this as, although I have been using Easy PC since the early 1980s (when it arrived on two 5¼" floppy discs), I have never designed for flexible circuits. |
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DavidM
United Kingdom
458 Posts |
Posted - 21 Jun 2013 : 08:31:36
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This is not a technology which is directly supported within Easy-PC, so there isn't the ability to assign a layer span to a board outline. So at best you are going to have to 'simulate' the structure and find a way to join the bits together.
Direct support for flexi-rigid is provided by our 'sister' product Pulsonix (http://pulsonix.com), which provides layers for boards plus all the associated stuff like tracking out of an inner layer on the rigid part onto the topmost layer of the flexi, placing components 'down' onto the flexi layers, etc. But that of course is a step up in cost that might be a step too far for you, as Pulsonix is a big product with many more features than just flexi-rigid.
Back in Easy-PC, hopefully other people on this forum may have handled flexi-rigid boards already and be willing to offer their thoughts.
David.
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John Baraclough
United Kingdom
129 Posts |
Posted - 21 Jun 2013 : 09:43:13
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Thanks David.
As it's likely to be a one-off project I don't think I'll be taking on the job. I'll stick with rigid boards! |
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Designing for Flexi-Rigid boards