Convert DSN to BRD

Understanding DSN and BRD file formats

DSN files are design files used primarily by PCB (Printed Circuit Board) design software such as OrCAD. They contain schematic capture data, including circuit diagrams, component connections, and electrical properties. BRD files, on the other hand, are board layout files that represent the physical layout of a PCB, including traces, pads, and component placements. BRD files are commonly used by PCB design tools like Eagle, Altium Designer, and KiCad.

Why convert DSN to BRD?

Converting a DSN file to a BRD file is essential when you want to move from the schematic design phase to the PCB layout phase. This conversion allows you to use the schematic data to create the actual board layout, which is necessary for manufacturing the PCB.

How to convert DSN to BRD

There is no direct, universal converter for DSN to BRD because these formats are often proprietary and used by different software. However, the most common workflow involves using OrCAD for DSN files and exporting the netlist or using an intermediate format compatible with your target PCB layout tool.

• OrCAD to Allegro: If you are using OrCAD, you can use the File → Export → Netlist option to generate a netlist, which can then be imported into Cadence Allegro to create a BRD file.
• OrCAD to Eagle or KiCad: Export the netlist from OrCAD and use a netlist importer in Eagle or KiCad. You may need to use a third-party script or plugin to facilitate this process.

Recommended software for DSN to BRD conversion

The best software for this conversion is Cadence Allegro PCB Designer, as it natively supports both DSN and BRD formats. For open-source alternatives, KiCad can import netlists from OrCAD, but you may need to manually adjust component footprints and board layout.

Step-by-step conversion process

1. Open your DSN file in OrCAD Capture.
2. Go to File → Export → Netlist and select the appropriate netlist format (e.g., Allegro).
3. Open Cadence Allegro PCB Designer.
4. Import the netlist to create a new BRD file.
5. Verify and adjust the board layout as needed.

Tips and considerations

• Always check for compatibility between the netlist format and your target PCB tool.
• Manual adjustments may be necessary after import, especially for component footprints and board outlines.
• Backup your original DSN file before starting the conversion process.