4 layers58 × 31 mm
4 layers48 × 26 mm
Designed a compact embedded system integrating USB-C, power management, and RF design into a single 4-layer PCB. Focused on clean layout, strong signal integrity, and practical debugging structure. 💡 Features: • STM32WB55 (BLE) • USB-C with protection • 3.3V regulation • RF matching + U.FL • SWD debugging 🤝 Sponsored by NextPCB
- Size
- 48 × 26 mm
- Copper layers
- 4
- Thickness
- 1.58 mm
- Parts
- 48
- Nets
- 55
- Pads
- 231
- Tracks, vias
- 322, 122
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 Jul 2026
- Updated
- 3 Jul 2026
Overview
Stm32 is an open-source printed circuit board by baszdr, from the baszdr/STM32_NEXT_PCB_PROJECT repository on GitHub. It is a 4-layer board of 48 × 26 mm with 48 parts on 55 nets, routed with 322 tracks and 122 vias.
It is built around the STM32WB55CEU6, MIC5365-3.3YD5-TR and USBLC6-2SC6. Its parts include 19 capacitors, 7 resistors, 4 connectors, 3 ICs and 3 inductors. It belongs with the radio and wireless boards and the STM32 boards of this library.
Main components
3
STM32WB55CEU6
UFQFPN-48(7x7)UFQFPN-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
MIC5365-3.3YD5-TR
TSOT-23-5-40℃~+125℃@(Tj) 1 150mA 200uVrms 3.3V 310mV@(150mA) 39uA 5.5V 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive TSOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
README
README.mdSTM32_NEXT_PCB_PROJECT
Designed a compact embedded system integrating USB-C, power management, and RF design into a single 4-layer PCB. Focused on clean layout, strong signal integrity, and practical debugging structure.
💡 Features:
• STM32WB55 (BLE)
• USB-C with protection
• 3.3V regulation
• RF matching + U.FL • SWD debugging
🤝 Sponsored by NextPCB "https://www.nextpcb.com
"
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C8, C9, C10, C12, C17 |
| 4 | 220R | Resistor_SMD:R_0402_1005Metric | R3, R4, R5, R7 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H1, H2, H3, H4 |
| 3 | 4u7 | Capacitor_SMD:C_0603_1608Metric | C14, C18, C19 |
| 3 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FM1, FM2, FM3 |
| 2 | 10P | Capacitor_SMD:C_0402_1005Metric | C11, C13 |
| 2 | 51k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | 10n | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 10u | Inductor_SMD:L_0402_1005Metric | L2 |
| 1 | 2n7 | Inductor_SMD:L_0402_1005Metric | L3 |
| 1 | 4u7 | Resistor_SMD:R_0402_1005Metric | C7 |
| 1 | 5k1 | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | Conn_01x04 | Connector_Molex:Molex_CLIK-Mate_502386-0470_1x04-1MP_P1.25mm_Horizontal | J2 |
| 1 | Conn_Coaxial | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | J4 |
| 1 | Crystal | Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm | X1 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | DLF162500 | BLUEPRINT:Untitled | FLT1 |
| 1 | LED | Inductor_SMD:L_0402_1005Metric | D1 |
| 1 | MIC5365-3.3YD5 | Package_TO_SOT_SMD:TSOT-23-5 | U3 |
| 1 | STM32WB55CEU6 | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U2 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | op3 | Capacitor_SMD:C_0402_1005Metric | C16 |
| 1 | op8 | Capacitor_SMD:C_0402_1005Metric | C15 |
| 1 | ~ | Connector:Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J3 |
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Questions
How big is the Stm32 PCB?
It measures 48 × 26 mm and has 4 copper layers, 1.58 mm thick.
What parts does the Stm32 use?
48 parts, built around the STM32WB55CEU6, MIC5365-3.3YD5-TR and USBLC6-2SC6. 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 Stm32 KiCad files?
From the baszdr/STM32_NEXT_PCB_PROJECT repository on GitHub, at the commit this page was made from: the board is stm32/stm32.kicad_pcb and its schematic stm32/stm32.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Stm32 design in my own project?
Its repository states no licence, so its author keeps all rights: ask baszdr before reusing the design.