If you already have the full Allegro 17.4 software installed, the viewer is included and does not require a separate download.
Inspect padstack definitions and geometry dimensions directly on the canvas. System Requirements
Measure with respect to absolute or relative design grids. Cross-Probing and Properties
You can toggle visibility for specific layers, routing traces, copper pours, shapes, vias, and text strings. This makes it easy to isolate a single signal layer on a complex 12-layer board. 2. Precise Measurement Options allegro free physical viewer 174 download link
| Component | Purpose | | :--- | :--- | | | Opens and inspects PCB board files (.brd) | | OrCAD Capture 17.4 | Views schematic projects (.cpm/.sdax) | | Cadence APD+ Free Physical Viewer 17.4 | Views advanced package designs (.mcm/.sip) |
Opens .brd files created in Allegro PCB Designer, Allegro Package Designer , and SiP Digital Layout.
Yes. Since OrCAD and Allegro share the same file format (.brd), this viewer works perfectly for OrCAD PCB designs as well. If you have trouble with the installation, let me know: Are you getting a specific error code ? If you already have the full Allegro 17
Follow these steps carefully for a successful installation.
the section titled "Allegro Free Physical Viewer 17.4".
Toggle visibility for copper, silkscreen, mask, and paste layers. Cross-Probing and Properties You can toggle visibility for
: For viewing Cadence .brd files natively, the Allegro Free Physical Viewer is unmatched in compatibility and feature set. The alternatives either require file conversion or lack critical functions like cross‑probing and layer‑specific measurements.
Version numbers matter immensely in EDA software. Allegro 17.2 and earlier used a different database structure. Starting with , Cadence introduced a new database revision (also known as "Allegro 17.4-2019"). A viewer from 16.6 or 17.2 cannot open a 17.4 .brd file. If your colleagues or suppliers are sending you 17.4 designs, you have no choice but to find the 17.4 viewer.