4 layers139.7 × 63.5 mm
Tractive Battery Board
formulaslug/fs-4-schematics
Electrical Design Repository for fs-4 schematics and PCBs
179 parts7
4 layers92.5 × 101.6 mm
Electrical Design Repository for fs-4 schematics and PCBs
- Size
- 92.5 × 101.6 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 225
- Nets
- 241
- Pads
- 809
- Tracks, vias
- 1,509, 375
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Aug 2025
- Updated
- 28 Aug 2026
Overview
VCU is an open-source printed circuit board by formulaslug, from the formulaslug/fs-4-schematics repository on GitHub. It is a 4-layer board of 92.5 × 101.6 mm with 225 parts on 241 nets, routed with 1,509 tracks and 375 vias.
It is built around the ISO1044BD, MCP6004-E/P and AP63205WU, with the BME688, SN74HC14DR(LX) and BNO086 among its other parts. Its parts include 92 resistors, 53 capacitors, 20 ICs, 14 diodes and 10 transistors. It belongs with the STM32 boards of this library.
Main components
12
ISO1044BD
SOIC-8-40℃~+125℃ 1.71V~1.89V、2.25V~5.5V、4.5V~5.5V 5Mbps 70mA CAN FD Transceiver SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
MCP6004-E/P
PDIP-14-40℃~+125℃ 1.8V~6V 100uA 1MHz 1pA 1pA 23mA 28nV/√Hz@1kHz 2uV/℃ 4 4.5mV 600V/ms 76dB ESD protection Rail-to-Rail Input, Rail-to-Rail Output PDIP-14 Operational Amplifier ROHSMicrochip TechnologyOperational Amplifier
AP63205WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.8V~32V 5V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
BME688
SMD-8P-40℃~+85℃ 0%RH~100%RH 1.71V~3.6V 2.1uA I2C、SPI ±0.5℃ ±3%RH SMD-8P Temperature and Humidity Sensor ROHSBosch SensortecTemperature And Humidity Sensor
SN74HC14DR(LX)
SOP-14Inverterslingxingic
BNO086
TFLGA-28TFLGA-28 Accelerometers ROHSCEVAAccelerometersLM555CMX
SOIC-80℃~+70℃ 10mA 4.5V~16V SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / Counters
MIC5504-3.3YM5
SOT-23-5-40℃~+125℃@(Tj) 1 120uVrms 15uA 180mV@(300mA) 3.3V 300mA 5.5V 75dB@(1kHz) Fixed Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSTLINK-V3MODS
SMD,30x15mmSMD,30x15mm Programmers, Emulators, and Debuggers ROHSSTMicroelectronicsProgrammers, Emulators, And Debuggers
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
PMEG10020ELRX
SOD-123W-65℃~+150℃ 100V 150nA@100V 2A 830mV@2A Independent SOD-123W Schottky Diodes ROHSNexperiaSchottky DiodesABS07-120-32.768KHZ-T
SMD3215-2P-40℃~+85℃ 32.768kHz 55kΩ 6pF ±20ppm SMD3215-2P Crystals ROHSAbraconCrystals
README
README.mdNotes
Please complete KiCad training before beginning or working on any projects in this repository.
Only edit another person's work if you have spoke about it with them first and they have given you permission. This applies to Leads and Captains as well.
Contact Cole Lewis, Nathaniel Platt, or Wesley Rodriguez Kronmiller or Jack Nystrom for information/help relating to this repository.
Parts
225| Qty | Value | Footprint | References |
|---|---|---|---|
| 28 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C10, C11, C12, C13, C14, C15, C17, C18, C19, C21, C22, C25, C26, C33, C34 +12 |
| 23 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5, R10, R25, R27, R33, R35, R37, R41, R42, R47, R48, R51, R53, R54, R64 +7 |
| 14 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R11, R12, R17, R20, R45, R71, R72, R73, R80, R82, R83, R86 |
| 12 | 300 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R21, R22, R23, R28, R29, R30, R31, R38, R39, R40, R69, R79 |
| 11 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP21 |
| 10 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10 |
| 10 | QBLP631-R3A | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2, D3, D4, D5, D6, D7, D8, D9, D10, D11 |
| 9 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R43, R44, R49, R50, R52, R61, R74, R77, R78 |
| 8 | 200k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R8, R24, R26, R32, R34, R36, R88 |
| 6 | 20k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R56, R57, R60, R81, R85, R92 |
| 5 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C4, C16, C20, C47 |
| 5 | MCP6004 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U6, U7, U8, U11, U24 |
| 4 | 12k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R55, R58, R59, R91 |
| 4 | 39nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C27, C28, C29, C30 |
| 4 | 4.7uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C35, C36, C39, C41 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 3 | 220k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7, R46 |
| 3 | 300k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R66, R67, R70 |
| 3 | PMEG10020ELR | Diode_SMD:Nexperia_CFP3_SOD-123W | D1, D22, D24 |
| 2 | 0.015uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6, C7 |
| 2 | 1.8nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9 |
| 2 | 120 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R62, R63 |
| 2 | 12pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C55, C56 |
| 2 | 3296W_10K | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV1, RV2 |
| 2 | 6.8pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C37, C38 |
| 2 | ISO1044BD | FS_4_Global_Footprint_Library:SOIC-8_ISO1044BD | U21, U22 |
| 2 | SN74HC14DR | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U13, U15 |
| 2 | SN74HCS32DR | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U9, U12 |
| 1 | FS_4_Global_Footprint_Library:FORMULA SLUG TITLE | G*** | |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C42 |
| 1 | 120k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R14 |
| 1 | 169k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R16 |
| 1 | 191k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13 |
| 1 | 220nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C23 |
| 1 | 36k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R84 |
| 1 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R89 |
| 1 | 4.7uH | Inductor_SMD:L_Bourns_SRP5030T | L1 |
| 1 | 430k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18 |
| 1 | 47uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 1 | 5.23k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19 |
| 1 | 9.53k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R15 |
| 1 | ABS07-120-32.768KHZ-T | Crystal:Crystal_SMD_EuroQuartz_EQ161-2Pin_3.2x1.5mm_HandSoldering | XTAL1 |
| 1 | AP63205WU | Package_TO_SOT_SMD:TSOT-23-6 | U1 |
| 1 | ATS13-34PA2-BM01 | FS_4_Global_Footprint_Library:ATS13-34PA2-BM01 | J3 |
| 1 | ATS13-34PB2-BM01 | FS_4_Global_Footprint_Library:ATS13-34PB2-BM01 | J1 |
| 1 | BME688 | FS_4_Global_Footprint_Library:BME_688_Bosch_LGA-8_3x3mm_P0.8mm_ClockwisePinNumbering | U28 |
| 1 | BNO086 | FS_4_Global_Footprint_Library:BNO086_LGA-28_5.2x3.8mm_P0.5mm | U29 |
| 1 | BOTS_Shutdown | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | BSPD_Shutdown_Out | TestPoint:TestPoint_Pad_D1.0mm | TP7 |
| 1 | Conn_01x08_Shielded | FS_4_Global_Footprint_Library:SS-60400-023 | J2 |
| 1 | ECS-240-8-37B-CKY-TR | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | E_Stop_Shutdown | TestPoint:TestPoint_Pad_D1.0mm | TP6 |
| 1 | FCM 1608KF-601T03 | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 1 | FTSH-107-01-F-DV-K-P-TR | Connector_PinHeader_1.27mm:PinHeader_2x07_P1.27mm_Vertical_SMD | J4 |
| 1 | G6DN-1A | FS_4_Global_Footprint_Library:RELAY_G6DN-1A | K3 |
| 1 | G6SK-2G | Relay_SMD:Relay_DPDT_Omron_G6SK-2G | K2 |
| 1 | Inertia_Shutdown | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | LM555CMX | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U16 |
| 1 | LTST-S270KRKT | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D19 |
| 1 | MIC5504-3.3YM5 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | SN74HCS08DR | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U10 |
| 1 | STLINK-V3MODS | FS_4_Global_Footprint_Library:MODULE_STLINK-V3MODS | U26 |
| 1 | STM32F446RETx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U27 |
| 1 | SZNUD3124DMT1G | Package_TO_SOT_SMD:SC-74-6_1.55x2.9mm_P0.95mm | U14 |
| 1 | Shutdown_In | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | TSSI_Red_Logic | TestPoint:TestPoint_Pad_D1.0mm | TP9 |
| 1 | TSSI_Status | TestPoint:TestPoint_Pad_D1.0mm | TP8 |
| 1 | Y97KT23B5NAFP | Button_Switch_SMD:SW_SPST_PTS647_Sx38 | SW5 |
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Questions
How big is the VCU PCB?
It measures 92.5 × 101.6 mm and has 4 copper layers, 1.6 mm thick.
What parts does the VCU use?
225 parts, built around the ISO1044BD, MCP6004-E/P, AP63205WU and BME688. 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 VCU KiCad files?
From the formulaslug/fs-4-schematics repository on GitHub, at the commit this page was made from: the board is VCU/VCU.kicad_pcb and its schematic BMS Busbar Board/BMS Busbar Board/BMS Busbar Board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the VCU design in my own project?
Its repository states no licence, so its author keeps all rights: ask formulaslug before reusing the design.