2 layers85.4 × 54.1 mm
2 layers85 × 54 mm
Card
The-Wolfson/CardThe real challenge is getting it cheap enough that it can be produced at scale.
- Size
- 85 × 54 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 7
- Nets
- 10
- Pads
- 22
- Tracks, vias
- 31, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 26 Jul 2025
- Updated
- 19 Aug 2025
Overview
Card is an open-source printed circuit board by The-Wolfson, from the The-Wolfson/Card repository on GitHub. It is a 2-layer board of 85 × 54 mm with 7 parts on 10 nets, routed with 31 tracks and 0 vias.
It is built around the NT3H2111W0FHKH. Its parts include 3 diodes, 1 capacitor, 1 resistor and 1 IC.
Main components
1README
README.mdBusiness Card
An NFC PCB business card with LED feedback.
BOM
| Comment | Part | Quantity | LCSC ID | Price |
|---|---|---|---|---|
| NFC Chip | NT3H2111W0FHKH | 1 | C710403 | $4.43 |
| Capacitor | CL10B224KA8NNNC | 1 | C21120 | $0.56 |
| Resistor | 0603WAF470JT5E | 1 | C23182 | $0.11 |
| LED | KT-0805R | 3 | C2295 | $0.53 |
| PCB | 5 | $4.00 | ||
| PCBA | 2 | $18.37 | ||
| Shipping | $8.14 | |||
| Total: $36.14 |
Use
Hold your phone to the card, and the website will open.
Justification
I need a way to easily point people to my website, this was the solution. A card with a small yet distinct form factor, recognisable even from a distance.
The real challenge is getting it cheap enough that it can be produced at scale.
Parts
7| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | LED | easyeda2kicad:LED0805-R-RD | D1, D2, D3 |
| 1 | Antenna_Loop | RF_Antenna:NFC_Antenna | AE1 |
| 1 | C | easyeda2kicad:C0603 | C1 |
| 1 | NT3H2111W0FHKH | easyeda2kicad:XQFN-8_L1.6-W1.6-P0.50-BL_NT3H2111W0FHKH | U1 |
| 1 | R | easyeda2kicad:R0603 | R1 |
Questions
How big is the Card PCB?
It measures 85 × 54 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Card use?
7 parts, built around the NT3H2111W0FHKH. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Card KiCad files?
From the The-Wolfson/Card repository on GitHub, at the commit this page was made from: the board is PCB/Card.kicad_pcb and its schematic PCB/Card.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Card design in my own project?
Its repository states no licence, so its author keeps all rights: ask The-Wolfson before reusing the design.
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