What you get - Koppar

Every file is a standard format. The KiCad files open in KiCad 10 with real library symbols and footprints. The fab files are what a fab’s CAM department asks for.

The KiCad project

File	What it is
`circuit.kicad_sch`	The schematic. Real library symbols, a sheet per function on larger designs.
`circuit.kicad_pcb`	The board. Footprints placed, tracks routed, ground and power zones filled. Editable.
`circuit.kicad_pro`	The project file. Carries the net classes, the design rules and the fab’s minimums, so KiCad’s DRC agrees with ours.
`circuit.net`	The netlist the schematic compiled to.
`circuit.py`	The SKiDL source the schematic was generated from.

Part sourcing is written into the design: every footprint and symbol carries the manufacturer, the part number and the LCSC number as hidden fields.

Checks

File	What it is
`circuit.drc.json`	KiCad’s design-rule report after a zone refill. Zero means zero. Anything else is listed with its location.
`dfm.json`	The assembly report: short-stock rows, designators an assembler’s parser will not read, extended-library parts and the fee they imply.
`ORDER.md`	The finest track and smallest drill the copper forces, so the fab order matches the board.

Fab files

Released only for a board with zero DRC errors and nothing unconnected.

File	What it is
`gerbers.zip`	Gerber layers and Excellon drill files.
`circuit-ipc2581.xml`	IPC-2581, next to the Gerbers, for a CAM handoff that wants one file.
ODB++ archive	The same board as ODB++.
`order.zip`	The assembly bundle: Gerbers, `cpl.csv` (pick and place, with rotations corrected per package), `bom-assembly.csv` with LCSC part numbers, and `ORDER.md`, the settings to pick at the fab with the DFM findings.

Bill of materials

bom.csv lists every part matched to a distributor listing (Mouser or JLCPCB/LCSC), with its stock, the unit price at your quantity and the total. A line with no stock left is flagged, with alternates to pick from. See Manufacturing.

3D

File	What it is
`board.glb`	The board as a 3D model, the same export KiCad’s viewer uses. The studio shows it in the browser.
STEP	Exported on request from the board tools, for a mechanical CAD check of the enclosure.

Gerbers are produced by kicad-cli from the same .kicad_pcb you download. There is no separate internal format.