Allegro/OrCAD Rigid Flex Design Creation Best Practices
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A new tab and column are added to the All stackups tab with the new stackup name. Only the
Surface layer (TOP and BOTTOM) checkboxes are selected in the new column.
5. To construct the stackup for the flex, select the checkboxes for each of the layers that are part of
flex.
As each layer is selected, the cross section graphics image is updated.
Define the top and bottom Coverlay and Coverlay Adhesive layers in the stackup:
1. In Cross Section Editor, right-click a layer and choose Add Layers from the pop-up menu.
2. Add the Coverlay Top, and Adhesive Top layers above the Soldermask Top layer.
3. Add the Coverlay Bottom and Adhesive Bottom below the Soldermask Bottom layer.
When assigning the adhesive layers, the layer definition was created in the Mask Layer Site File, so this
material will also be selected in the Site-defined Mask Layer node in the Add Layers form.
