# PCB tray

The PCB tray is a special type of tray used by a PCB 3D space.

Key points:

- Adding parts to the 2D portion of the PCB space automatically displays their 3D views in the 3D tray.
- Adding parts to the 3D portion of the PCB space automatically displays their 2D views in the 2D tray.
- When transferring a circuit to realPCB, any parts that remain in a 3D tray will be autoplaced on to the printed circuit board by realPCB.

## See also:

- PCB 3D space