2 layers21 × 51 mm
2 layers35 × 17 mm
Microkey
Badbird5907/microkey46- Size
- 35 × 17 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 63
- Pads
- 191
- Tracks, vias
- 326, 42
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 28 Jun 2025
- Updated
- 28 Jan 2026
Overview
Microkey is an open-source printed circuit board by Badbird5907, from the Badbird5907/microkey repository on GitHub. It is a 2-layer board of 35 × 17 mm with 43 parts on 63 nets, routed with 326 tracks and 42 vias.
It is built around the TPS7A2033PDBVR-TP and ABM8-272-T3. Its parts include 19 capacitors, 11 resistors, 3 ICs, 1 diode and 1 connector. It belongs with the RP2350 boards of this library.
Main components
2
TPS7A2033PDBVR-TP
SOT-23-5-40℃~+85℃ 1 180uV@(300mA) 2uA 3.3V 300mA 5.5V 75dB@(1kHz) Fixed Over Current Protection、Enable、Thermal Shutdown Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICUncategorised
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C8, C11, C12, C13, C14, C15, C16, C17, C18 |
| 5 | 1k | Resistor_SMD:R_0402_1005Metric | R2, R3, R4, R6, R10 |
| 3 | 10u | Capacitor_SMD:C_0805_2012Metric | C1, C5, C19 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C3, C4 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R7, R8 |
| 2 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C9, C10 |
| 2 | 4.7u | RP2350_60QFN_minimal:C_0402_1005Metric_small_pads | C6, C7 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 220 | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 3.3u | RP2350_60QFN_minimal:L_pol_2016 | L1 |
| 1 | 33 | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 5.1k | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | BOOT_TP | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | Button | Components:Button | J1 |
| 1 | GND_TP | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | GND_TP_2 | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | Keychain | Components:Keychain | H1 |
| 1 | RESET | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | RP2350_60QFN | RP2350_60QFN_minimal:RP2350-QFN-60-1EP_7x7_P0.4mm_EP3.4x3.4mm_ThermalVias | U1 |
| 1 | TPS7A2033PDBVR | Components:SOT-23-5_L2.9-W1.6-P0.95-LS2.8-BR | U2 |
| 1 | ~ | Components:LED-SMD_4P-L3.2-W2.8_XZMDKCBDDG45S-9 | LED1 |
| 1 | ~ | USB-C:USB-C-SMD_U261-121N-4BS2S | USB1 |
| 1 | ~ | Components:USON-8_L3.0-W2.0-P0.50-BL-EP | U3 |
Questions
How big is the Microkey PCB?
It measures 35 × 17 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Microkey use?
43 parts, built around the TPS7A2033PDBVR-TP and ABM8-272-T3. 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 Microkey KiCad files?
From the Badbird5907/microkey repository on GitHub, at the commit this page was made from: the board is PCB/microkey.kicad_pcb and its schematic PCB/microkey.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Microkey design in my own project?
Its repository states no licence, so its author keeps all rights: ask Badbird5907 before reusing the design.
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