Reads designs for versions 14.x, 15.0, 15.1 15.2, 15.5, 15.5.1, and 15.7 runs on Windows 2000 and Windows XP onlyĪllegro/OrCAD FREE Manufacturing Documentation Viewer Allegro/OrCAD FREE Physical Viewer 15.x - 8MB.Allegro/OrCAD/SIP/MCM FREE Physical Viewers 16.6 - 15MB.Reads designs for versions to 16.x and 17.2. Allegro/OrCAD/SIP/MCM FREE Physical Viewers 17.4 - 615MB.If you are using new features from the Allegro/OrCAD platform 17.4 release, you will need to download the latest Allegro/OrCAD FREE Physical Viewer 17.4. The Cadence ® Allegro ®/OrCAD ® FREE Physical Viewer is a free download that allows you to view and plot databases from Allegro PCB Editor, OrCAD PCB Editor, Allegro Package Designer, and Allegro PCB SI technology. Advanced PCB Design & Analysis Resources Hub.JasperGold Formal Verification Platform.Voltus-Fi Custom Power Integrity Solution.