2 layers76.2 × 50.8 mm
2 layers76.2 × 50.8 mm
Mcustm32f446
STM32World/hardware6STM32World Development Modules
- Size
- 76.2 × 50.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 86
- Pads
- 238
- Tracks, vias
- 488, 46
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 14 Jul 2021
- Updated
- 30 Oct 2025
Overview
Mcustm32f446 is an open-source printed circuit board by STM32World, from the STM32World/hardware repository on GitHub. It is a 2-layer board of 76.2 × 50.8 mm with 35 parts on 86 nets, routed with 488 tracks and 46 vias.
It is built around the AMS1117-3.3 and SRV05-4. Its parts include 13 capacitors, 6 resistors, 4 connectors, 3 ICs and 3 diodes. It belongs with the STM32 boards of this library.
Main components
2
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
README
README.mdstm32world
Documentation is in our wiki: https://stm32world.com/wiki/STM32World
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | C_100NF_0603 | Capacitor_SMD:C_0603_1608Metric | C2, C5, C6, C7, C8, C9, C10 |
| 2 | C_10UF_0805 | Capacitor_SMD:C_0805_2012Metric | C1, C3 |
| 2 | C_20PF_0603 | Capacitor_SMD:C_0603_1608Metric | C11, C13 |
| 2 | R_10K_0603 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | R_220_0603 | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | R_5.1K_0603 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1, JP2 |
| 2 | ~ | stm32world:TS-1088R-02526 | SW1, SW2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | C_1UF_0603 | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | C_2.2UF_0603 | Capacitor_SMD:C_0603_1608Metric | C12 |
| 1 | FB_0603 | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | LED_BLUE_0603 | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | LED_GREEN_0603 | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | STM32F446RCTx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U3 |
| 1 | STM32WORLD_BOARD | stm32world:STM32WORLD_BOARD | J4 |
| 1 | STM32WORLD_CONNECTOR_1 | stm32world:PinSocket_2x20_P2.54mm_Vertical_Stackable | J2 |
| 1 | STM32WORLD_CONNECTOR_2 | stm32world:PinSocket_2x20_P2.54mm_Vertical_Stackable | J3 |
| 1 | X_16MHZ | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | ~ | Diode_SMD:D_SOD-123 | D1 |
| 1 | ~ | stm32world:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
Questions
How big is the Mcustm32f446 PCB?
It measures 76.2 × 50.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mcustm32f446 use?
35 parts, built around the AMS1117-3.3 and SRV05-4. 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 Mcustm32f446 KiCad files?
From the STM32World/hardware repository on GitHub, at the commit this page was made from: the board is mcustm32f446/mcustm32f446.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mcustm32f446 design in my own project?
Its repository states no licence, so its author keeps all rights: ask STM32World before reusing the design.
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