4 layers36.8 × 95.3 mm
STM32F401
thecasterian/STM32F401-Playground
Have fun with an STM32F401 breakout board
67 partsBSD-3-Clause
4 layers31 × 15 mm
St link
lbthomsen/st-link31ST-Link Research
- Size
- 31 × 15 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 48
- Pads
- 132
- Tracks, vias
- 233, 51
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 Jun 2020
- Updated
- 10 Oct 2025
Overview
St link is an open-source printed circuit board by lbthomsen, from the lbthomsen/st-link repository on GitHub. It is a 4-layer board of 31 × 15 mm with 37 parts on 48 nets, routed with 233 tracks and 51 vias.
It is built around the STM32F103CBT6, XC6206P332MR and B5819W, with the S9013 among its other parts. Its parts include 13 resistors, 9 capacitors, 3 diodes, 2 ICs and 2 connectors. It belongs with the STM32 boards of this library.
Main components
4
STM32F103CBT6
LQFP-48(7x7)-40℃~+85℃ 128KB 12bit 20KB 2V~3.6V 32 Bit 37 72MHz ARM Cortex-M3 Built-in FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
XC6206P332MR
SOT-23-40℃~+85℃@(Ta) 1 1uA 200mA 3.3V 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
B5819W
SOD-123-55℃~+125℃ 1.5A 1mA@40V 25A 40V 600mV@1A Standalone SOD-123 Schottky Diodes ROHSMDDSchottky DiodesS9013
SOT-23-55℃~+150℃ 1 NPN 100nA 120 150MHz 25V 300mW 500mA 5V 600mV NPN SOT-23 Bipolar (BJT) ROHSTWGMCBipolar (BJT)
README
README.mdst-link
No longer maintained!
Work in progress - see: https://stm32world.com/wiki/DIY_ST-Link_V2.1
STM32 Programmer. Should be compatible with ST's ST-Link/V2.1 devices.
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C6, C7, C8, C9 |
| 5 | ~ | TestPoint:TestPoint_Pad_1.0x1.0mm | TP1, TP2, TP3, TP4, TP5 |
| 2 | 100R | Resistor_SMD:R_0402_1005Metric | R6, R9 |
| 2 | 100k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R7 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C4, C5 |
| 2 | 20pF | Capacitor_SMD:C_0402_1005Metric | C2, C3 |
| 2 | 220R | Resistor_SMD:R_0402_1005Metric | R12, R13 |
| 2 | 4k7 | Resistor_SMD:R_0402_1005Metric | R10, R11 |
| 1 | 1K5 | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 39k | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 8MHz | st-link:Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | B5819W | Diode_SMD:D_SOD-123 | D1 |
| 1 | BLUE | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | DNP | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | RED | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | S9013 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | STM32F103CB | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | USB_A | st-link:USB_Male_A_UP2-AH-1-TH | J1 |
| 1 | XC6206P332MR | Package_TO_SOT_SMD:SOT-23 | U1 |
| 1 | ~ | st-link:IDC_EDGE | J2 |
| 1 | ~ | Jumper:SolderJumper-3_P1.3mm_Bridged12_Pad1.0x1.5mm | JP1 |
Questions
How big is the St link PCB?
It measures 31 × 15 mm and has 4 copper layers, 1.6 mm thick.
What parts does the St link use?
37 parts, built around the STM32F103CBT6, XC6206P332MR, B5819W and S9013. 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 St link KiCad files?
From the lbthomsen/st-link repository on GitHub, at the commit this page was made from: the board is pcb/stlink.kicad_pcb and its schematic pcb/stlink.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the St link design in my own project?
Its repository states no licence, so its author keeps all rights: ask lbthomsen before reusing the design.
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