# Coldcard Hardware Details

This directory contains enough information for you to be able to
build your own Coldcard from off-the-shelf parts.
We are sharing this information for the benefit of security
researchers who wish to analyse the Coldcard more completely.

# Schematic

![](schematic-q1d.png)

`schematic-q1d.png`

This is the Q rev D schematic.

![](schematic-mark5f.png)

`schematic-mark5f.png`

This is the Mark4 rev F schematic.

![](schematic-mark4d.png)

`schematic-mark4d.png`

This is the Mark4 rev D schematic.

![](schematic-mark3b.png)

`schematic-mark3b.png`

This is the Mark3 rev B schematic.


# BOM - Bill of Materials

The parts used in the Coldcard are detailed in these spreadsheets.
Most of them could be bought on Digikey, but some are direct from suppliers.

- BOM for Q rev D: `bom-q1d.xlsx`
- BOM for Mk5 rev F: `bom-mark5f.xlsx`
- BOM for Mk4 rev D: `bom-mark4d.xlsx`
- BOM for Mk3 rev B: `bom-mark3b.xlsx`

Not included are these minor bits:

- the plastic case (custom)
- the secure bag (with barcode serial number)
- pin-recovery card

# Important

- No promises that these files are 100% current because we constantly make quality improvements.
- Copyright of these files, and all design elements of the Coldcard remain with Coinkite Inc.
- This information is for research and testing purposes only—no warranties. 
- **Coinkite does NOT grant license of this information for comercial use.**