Pcb business card
About the Pcb business card
Pcb business card is an open source PCB design by scberarducci, published on GitHub under the CERN-OHL-W-2.0 license. It is a 2-layer board measuring 88.5 × 51.5 mm, with 63 components from 15 distinct parts.
By type, the board carries 35 resistors, 9 capacitors, 8 diodes, 7 transistors, 1 battery holder and 1 switch.
From the project
Design for Altium Academy's PCB Business Card Design Challenge, 2026. Open Hardware for educational use.
This PCB business card is a functional 7-stage transistor loop oscillator visualized with LEDs. The loop oscillator is powered while a pushbutton is held and otherwise remains off.
The design includes startup asymmetry at the first stage using a capacitor and diode, which helps ensure consistent startup and quick reset when power is removed.
The included BOM contains all parts used in the original fabricated card, rev 1.0, except the coin cell holder, which is a Keystone 3000 CR1220 clip.
Pcb business card bill of materials (BOM)
63 components, 15 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 7 | MMBT2222A | SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7 |
| 1 | 3000 | BatteryHolder_Keystone_3000_1x12mm | BT1 |
| 1 | 2.2uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C_ASYM1 |
| 1 | 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R_BLEED1 |
| 1 | SW_Push | SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | D_ASYM | D_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 7 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D3, D4, D5, D6, D7, D8 |
| 1 | 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | 10uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2 |
| 7 | 2.2uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5, C6, C7, C8, C9 |
| 7 | 4.7k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R6, R11, R16, R21, R26, R31 |
| 7 | 47k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R7, R12, R17, R22, R27, R32 |
| 7 | 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R8, R13, R18, R23, R28, R33 |
| 7 | 2.2k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R9, R14, R19, R24, R29, R34 |
| 7 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R10, R15, R20, R25, R30, R35 |
Pcb business card design files
The KiCad project lives in the scberarducci/pcb-business-card repository on GitHub; these links point at the commit this page was built from.
Pcb business card: common questions
How big is the Pcb business card?
The Pcb business card measures 88.5 × 51.5 mm, has 2 copper layers and is 1.19 mm thick.
How many components are on the Pcb business card?
63 components, from 15 distinct parts. The full bill of materials is listed on this page.
Where can I download the Pcb business card design files?
From the scberarducci/pcb-business-card repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Pcb business card design in my own project?
Yes, under the terms of its CERN-OHL-W-2.0 license, which scberarducci chose for the repository.