2 layers281.6 × 255.2 mm
Synthia
Engineering-House/Project-Synthia
The programs used are as follows: - STMCube32MX - Visual Studio Code - STM32CubeIDE for Visual Studio Code (Extension Pack)
236 parts
2 layers104 × 83 mm
Power source board
reihakuro/DoAn21- Size
- 104 × 83 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 81
- Nets
- 69
- Pads
- 217
- Tracks, vias
- 294, 0
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Oct 2026
- Updated
- 4 Nov 2026
Overview
Power source board is an open-source printed circuit board by reihakuro, from the reihakuro/DoAn2 repository on GitHub. It is a 2-layer board of 104 × 83 mm with 81 parts on 69 nets, routed with 294 tracks and 0 vias.
It is built around the STM32F103C8T6, S8050 and 1N4742A, with the IRF9540NS, LM393LS8 and SMAJ6.0A among its other parts. Its parts include 35 resistors, 15 capacitors, 14 connectors, 6 diodes and 3 transistors. It belongs with the STM32 boards of this library.
Main components
6
STM32F103C8T6
LQFP-48(7x7)-40℃~+85℃ 12bit 20KB 2V~3.6V 32 Bit 37 64KB 72MHz ARM Cortex-M3 Built-in FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
S8050
SOT-23-55℃~+150℃ 1 NPN 100MHz 100nA 120 25V 300mW 500mA 5V 600mV NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
1N4742A
DO-41-65℃~+200℃ 1 Independent 11.4V~12.6V 12V 1W 5uA@9.1V 700Ω 9Ω DO-41 Zener Diodes ROHSonsemiZener Diodes
IRF9540NS
TO-263MOSFETsMinos
LM393LS8
SOP-8-15V~-1.5V、1.5V~15V 0℃~+70℃ 1.4us 2 30V 350ns 3V~30V 4mV 5nA 600uA 65nA DTL、TTL、CMOS、ECL、MOS SOP-8 Comparators ROHSTECH PUBLICComparators
SMAJ6.0A
DO-214AC(SMA)-65℃~+150℃ 10.3V 38.8A 400W@10/1000us 6V 7.37V 800uA IEC 61000-4-2、IEC 61000-4-4 TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
Parts
81| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 330Ω | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R15, R16, R17, R18, R19, R20, R23, R24, R25, R26, R27, R28, R29 |
| 9 | 10kΩ | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R5, R13, R14, R21, R22, R31, R33, R34 |
| 8 | 1kΩ | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R6, R7, R9, R11, R30, R32, R35 |
| 7 | 100nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C2, C4, C6, C8, C9, C12, C14 |
| 4 | 100µF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C3, C5, C7, C13 |
| 3 | 2kΩ | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8, R10, R12 |
| 3 | LED | LED_THT:LED_D3.0mm_Clear | D3, D4, D6 |
| 2 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D2, D5 |
| 2 | 1nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C15, C16 |
| 2 | Conn_01x02_Pin | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J6, J8 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 2 | S8050 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q3 |
| 1 | 1N4742A | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | DZ1 |
| 1 | 2200µF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C1 |
| 1 | 3.3kΩ | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 43kΩ | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 470µF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C11 |
| 1 | 4S | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J14 |
| 1 | A | download:SW_SPST_Omron_B3F-40xx | SW1 |
| 1 | Buzzer | Buzzer_Beeper:MagneticBuzzer_PUI_AT-0927-TT-6-R | BZ1 |
| 1 | E.STOP | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J15 |
| 1 | IRF9540N | Package_TO_SOT_THT:TO-220-3_Vertical | Q2 |
| 1 | L298N-INPUT | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J13 |
| 1 | L298N-POWER | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J12 |
| 1 | LM393(L) | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | LM393(R) | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | NetTie_2 | NetTie:NetTie-2_SMD_Pad0.5mm | NT1 |
| 1 | PI-HALT | Connector_PinHeader_1.00mm:PinHeader_1x01_P1.00mm_Horizontal | J3 |
| 1 | PI-USB-C | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J17 |
| 1 | RUEF400/4A | Fuse:Fuse_Bourns_MF-RHT400 | F1 |
| 1 | SMAJ6.0A | Diode_SMD:D_SMA | D1 |
| 1 | STM32F103C8T6 | stm32-blue-pill:YAAJ_BluePill_2 | U1 |
| 1 | TTL-CP2102 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | US1 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J9 |
| 1 | US2 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | US3 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J11 |
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Questions
How big is the Power source board PCB?
It measures 104 × 83 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Power source board use?
81 parts, built around the STM32F103C8T6, S8050, 1N4742A and IRF9540NS. 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 Power source board KiCad files?
From the reihakuro/DoAn2 repository on GitHub, at the commit this page was made from: the board is hwdesign/rev-1/power-source-board.kicad_pcb and its schematic hwdesign/rev-1/power-source-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Power source board design in my own project?
Its repository states no licence, so its author keeps all rights: ask reihakuro before reusing the design.