UCB board
bartkepl·UCB_board·pcb/UCB_board.kicad_pcb
About the UCB board
UCB board is an open source STM32 PCB design by bartkepl, published on GitHub under the MIT license. It is a 4-layer board measuring 56.8 × 100 mm, with 148 components from 42 distinct parts.
Its main chip is the STM32H563VIT6, from the STM32 family. Other key parts include the SN65HVD75DR, W5500, LM4040DBZ-3, USBLC6-2SC6 and FM24C64B. By type, the board carries 60 capacitors, 35 diodes, 33 resistors, 8 ICs, 6 inductors and 4 fuses.
From the project
Control board for testing concepts with SCPI, UART, USB, RS485 and ETHERNET in pseudo 3U eurocard format
- Schematic and PCB layout done (4-layer, 56.8 × 100 mm), production files generated. - Design review completed; DRC/ERC clean (remaining items reviewed and excluded as by-design). - W5500 clock is sourced from the MCU (MCO1) by default — R80 fitted, R23 (Si5351C CLK0) DNP. - Firmware: STM32CubeMX skeleton only.
Production outputs: schematic PDF · PCB PDF · interactive BOM · gerbers

Main components on the UCB board
UCB board bill of materials (BOM)
148 components, 42 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SN65HVD75DR | SOIC127P600X175-8N | IC1 |
| 1 | W5500 | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | LM4040DBZ-3 | SOT-23_Handsoldering | U2 |
| 3 | USBLC6-2SC6 | SOT-23-6_Handsoldering | U3, U4, U5 |
| 1 | FM24C64B | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | STM32H563VIT6 STM32H563VITx | LQFP-100_14x14mm_P0.5mm | U7 |
| 1 | 3225-25M-SR | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 4 | SN020-30 Polyfuse | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1, F2, F3, F4 |
| 1 | H1102NL | SOIC127P940X597-16N | T1 |
| 6 | FYLS-1206PGC | LED_0603_1608Metric | D1, D2, D4, D6, D13, D14 |
| 5 | ESD5Z3.3T1G | D_SOD-523 | D3, D5, D10, D16, D17 |
| 2 | SMF5.0CA | D_SMF | D7, D12 |
| 2 | TGL34-15CA | D_MiniMELF | D8, D18 |
| 2 | BZD27C12P-E3-08 | D_SMF | D9, D19 |
| 1 | TGL34-6.8CA | D_MiniMELF | D11 |
| 1 | CDSOT23-SM712 | SOT95P230X117-3N | D15 |
| 16 | UT8413A | Diodes_UDFN-10_1.0x2.5mm_P0.5mm | D20, D21, D22, D23, D24, D25, D26, D27 +8 |
| 2 | WLBD1608HCU101TL 100 @ 100MHz | L_0603_1608Metric | FB1, FB2 |
| 4 | LQH32PN101MN0L | L_1210_3225Metric | L1, L2, L3, L4 |
| 35 | GRM188R71H104KA93D 100n | C_0603_1608Metric | C1, C2, C11, C12, C13, C14, C15, C16 +27 |
Show 22 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 1206B102K202 1nF/2kV | C_1206_3216Metric | C3, C5 |
| 4 | GRM1885C1H103JA01J 10n | C_0603_1608Metric | C4, C7, C10, C27 |
| 2 | 18p | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6, C8 |
| 3 | 0603X475K100CT 4.7u | C_0603_1608Metric | C9, C56, C57 |
| 12 | CL31B106KBHNNNE 10u | C_1206_3216Metric | C18, C21, C22, C30, C31, C34, C36, C43 +4 |
| 2 | 6.8n | C_0603_1608Metric | C73, C74 |
| 2 | 0402WGJ0220TCE 22 | R_0402_1005Metric | R1, R2 |
| 6 | CRCW060310K0FKTABC 10k | R_0603_1608Metric | R3, R21, R84, R85, R90, R91 |
| 1 | RC0603FR-0715KL 15k | R_0603_1608Metric | R4 |
| 3 | 10 | R_0603_1608Metric | R5, R88, R89 |
| 2 | 0603SAJ0750T5E 75 | R_0603_1608Metric | R6, R7 |
| 2 | RC0603JR-0782RL 82 | R_0603_1608Metric | R8, R9 |
| 2 | CRCW060349R9FKTABC 49.9 | R_0603_1608Metric | R10, R11 |
| 2 | 1-2176339-5 150 | R_0603_1608Metric | R12, R13 |
| 4 | WF06P330JTL 33 | R_0603_1608Metric | R14, R15, R16, R17 |
| 1 | 1M | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R18 |
| 1 | ERA3AEB1242V 12.4k | R_0603_1608Metric | R19 |
| 1 | 0603SAF1004T5E 1M | R_0603_1608Metric | R20 |
| 1 | CRCW04020000Z0TDBC 0R | R_0402_1005Metric | R80 |
| 2 | 0603SAF1200T5E 120 | R_0603_1608Metric | R86, R87 |
| 1 | 4D03WGJ0471T5E 4x470R | R_Array_Convex_4x0603 | RN1 |
| 2 | 4D03WGJ0103T5E 4x10k | R_Array_Convex_4x0603 | RN2, RN3 |
UCB board design files
The KiCad project lives in the bartkepl/UCB_board repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/UCB_board.kicad_pcb
- Schematicpcb/UCB_board.kicad_sch
UCB board: common questions
What microcontroller does the UCB board use?
The UCB board is built around the STM32H563VIT6, from the STM32 family.
How big is the UCB board?
The UCB board measures 56.8 × 100 mm, has 4 copper layers and is 1.5862 mm thick.
How many components are on the UCB board?
148 components, from 42 distinct parts. The full bill of materials is listed on this page.
Where can I download the UCB board design files?
From the bartkepl/UCB_board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the UCB board design in my own project?
Yes, under the terms of its MIT license, which bartkepl chose for the repository.
Can I test firmware for the UCB board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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