Allegro/OrCAD Rigid Flex Design Creation Best Practices
_______________________________________________________________________
Learn more at Cadence Online Support - https://support.cadence.com Page 22
© 2016 Cadence Design Systems, Inc. All rights reserved worldwide.
P rim ary Stackup
Flex M ain Stack up .
Flex Stif fener Stack up
Stackup Details for Documentation
Relaying stackup structure to the manufacturer is an important part of defining the physical aspects of a
design. Manufacturers need to know the material required for each of the different zones in the design.
As standards such as IPC-2581 that are beginning to output this information, the zone dimensions and
linked stackups are exchanged electronically. Until these standards are fully adopted, documentation is
the method for relaying the stackup construction.
The document should have a detailed diagram of the various zones with zone identification labels and
dimension for the zone profile. This gives the fabricator the information on the tool-related processes to