2026Precharge
About the 2026Precharge PCB
2026Precharge is an open source STM32 PCB design by SCFormulaElectric, published on GitHub. It is a 4-layer board measuring 96.6 × 40.7 mm, with 72 components from 32 distinct parts.
Its main chip is the STM32C011F6P6, from the STM32 family. Other key parts include the H11L1, LM331N and UA78M33QDCYRQ1. By type, the board carries 33 resistors, 15 capacitors, 6 ICs, 4 transistors, 4 diodes and 1 crystal.
From the project
- Update README.md file in each directory with the appropriate changes made - On schematics, please use boxes to section of parts of the circuit and use text boxes to describe functionality
Main components on the 2026Precharge
2026Precharge bill of materials (BOM)
72 components, 32 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | H11L1 | SOP-6_L8.5-W6.4-P2.54-LS9.2-BL | U1, U4 |
| 2 | LM331N | DIP-8_L9.8-W6.6-P2.54-LS7.6-BL | U2, U5 |
| 1 | STM32C011F6P6 | TSSOP-20_4.4x6.5mm_P0.65mm | U7 |
| 1 | UA78M33QDCYRQ1 | SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR | U8 |
| 2 | XR6005 XNRUSEMI(新锐) | SOT-23-3_L2.9-W1.3-P0.95-LS2.4-BR | Q1, Q2 |
| 2 | AO3407 Hottech(合科泰) | SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | Q3, Q5 |
| 1 | X50328MSB2GI Yangxing Tech | OSCCC500X320X135 | X1 |
| 2 | C1608C0G1H103JT000N | C0603 | CT1, CT2 |
| 1 | C6165188 BORN SMD1206-050/30N | Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F7 |
| 2 | RC0603FR-07100KL | R0603 | RL1, RL2 |
| 2 | 0603WAF1202T5E | R0603 | RS1, RS2 |
| 2 | 0603WAF6801T5E | R0603 | RT1, RT2 |
| 1 | PESD15VS1UB | D_SOD-523 | D3 |
| 2 | MMBZ16VALT1G onsemi(安森美) | SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | D4, D5 |
| 1 | BZT52C10S hongjiacheng | D_SOD-323 | D6 |
| 1 | 22UF 22uF | C0805 | C1 |
| 1 | 0.47UF 0.47uF | C0805 | C2 |
| 2 | CC1206JKNPO9BN103 YAGEO(国巨) | C1206 | C3, C4 |
| 6 | 100NF 100nF | C0603 | C5, C7, C9, C11, C16, C17 |
| 2 | 20PF 20pF Samsung Electro-Mechanics | C_0603_1608Metric | C6, C8 |
Show 12 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4.7UF 4.7uF | C0603 | C10 |
| 2 | 10UF 10uF | C1206 | C14, C15 |
| 8 | FRC1206F7504TS 7.5Mohm FOJAN(富捷) | R1206 | R1, R2, R3, R4, R7, R8, R9, R10 |
| 9 | 10K 10k | R0603 | R5, R15, R18, R20, R23, R26, R30, R31 +1 |
| 2 | FRC0603F9103TS 910k FOJAN(富捷) | R0603 | R6, R11 |
| 2 | 4.7K 4.7k | R0603 | R12, R13 |
| 1 | 47K 47k | R0603 | R14 |
| 2 | 100K 100k | R0603 | R16, R21 |
| 3 | 47 | R0603 | R17, R22, R27 |
| 2 | 33K 33k | R0603 | R19, R29 |
| 2 | 1k | R0603 | R24, R25 |
| 2 | 0603WAF4700T5E UNI-ROYAL(厚声) | R0603 | R28, R33 |
2026Precharge design files
The KiCad project lives in the SCFormulaElectric/USC-Electrical-Systems repository on GitHub; these links point at the commit this page was built from.
2026Precharge: common questions
What microcontroller does the 2026Precharge use?
The 2026Precharge is built around the STM32C011F6P6, from the STM32 family.
How big is the 2026Precharge PCB?
The 2026Precharge measures 96.6 × 40.7 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the 2026Precharge?
72 components, from 32 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the 2026Precharge design files?
From the SCFormulaElectric/USC-Electrical-Systems repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the 2026Precharge design in my own project?
The repository has no license, so all rights stay with SCFormulaElectric. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the 2026Precharge 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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