OrCAD Project File

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OrCAD, a proprietary software tool suite used primarily for electronic design automation (EDA). The software is used mainly by electronic design engineers and electronic technicians to create electronic schematics, perform mixed-signal simulation and electronic prints for manufacturing printed circuit boards. OrCAD was taken over by Cadence Design Systems in 1999 and was integrated with Cadence Allegro since 2005. A OrCAD Project File (.OPJ) is a container for the OrCAD design file (.DSN). In addition, a project file also includes simulation profile and layout information.

Identify it

Extensions	`.opj`
Signatures	`284578707265737350726f6a65637420` at byte 0 (OrCAD Project File) `284578707265737350726f6a6563742022` at byte 0
PRONOM	`fmt/1572`
Wikidata	`Q105855649`

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Sources

From PRONOM, Wikidata. Updated 2026-10-20.

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