4 layers236.1 × 156.9 mm
4 layers103 × 57 mm
- Size
- 103 × 57 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 196
- Nets
- 176
- Pads
- 695
- Tracks, vias
- 1,133, 213
- Pours
- 121
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Mar 2025
- Updated
- 4 Jun 2025
Overview
BMS is an open-source printed circuit board by buglalis, from the buglalis/degree repository on GitHub. It is a 4-layer board of 103 × 57 mm with 196 parts on 176 nets, routed with 1,133 tracks and 213 vias.
It is built around the ISO1050DUB, MCP3201-CI/P and ST1S14PHR, with the TL431A, HCPL-0630 and 74HC4051 among its other parts. Its parts include 98 resistors, 26 capacitors, 24 ICs, 17 transistors and 8 connectors. It belongs with the power boards and the STM32 boards of this library.
Main components
12
ISO1050DUB
SOP-8-2.54mm-55℃~+105℃ 1 1Mbps 2500 3V~5.5V 4.75V~5.25V 50kV/us Bus fault detection and protection、Fail-safe SOP-8-2.54mm Isolated CAN Transceivers ROHSTexas InstrumentsIsolated CAN Transceivers
MCP3201-CI/P
PDIP-8-40℃~+85℃ 0.5LSB 1 100kHz 12 2.7V~5.5V 2LSB 500nA 800kHz、1.6MHz External External SAR SPI Yes PDIP-8 Analog to Digital Converters (ADC) ROHSMicrochip TechnologyAnalog To Digital Converters (ADC)
ST1S14PHR
SOIC-8-40℃~+150℃ 1 1.22V 2.4mA 3A 5.5V~48V 850kHz Adjustable Buck Buck Built-in No SOIC-8 DC-DC Converters ROHSSTMicroelectronicsDC-DC Converters
TL431A
SOT-23-20℃~+70℃@(Ta) 150mA 1uA 2.5V~36V 2.5V~36V 250uA Adjustable Parallel ±0.5% SOT-23 Voltage Reference ROHShongjiachengVoltage Reference
HCPL-0630
SOT-ALL-8-40℃~+85℃ 1.75V 10Mbps 15kV/us 2 3.75kV 4.5V~5.5V 50mA 5mA 75ns 75ns DC Output enable control、Open-collector output SOT-ALL-8 Logic Output OptoisolatorsBroadcom LimitedLogic Output Optoisolators
74HC4051
SOP-16-40℃~+85℃ 1 170MHz 28ns 29ns 3V~9V 5ns 5pF 80Ω 8:1 SOP-16 Analog Switches, Multiplexers ROHSWuxi I-core ElecAnalog Switches, MultiplexersHCPL-0600
SOP-8-40℃~+85℃ 1 10Mbps 4.5V~5.5V 5kV/us DC SOP-8 Logic Output Optoisolators ROHSonsemiLogic Output Optoisolators
LDL1117S33R
SOT-223-4-40℃~+125℃@(Tj) 1 1.2A 18V 3.3V 500uA 600mV@(1.2A) 60uVrms 87dB@(120Hz) Fixed Over Current Protection、Thermal Shutdown Positive SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BZX384-C4V7
SOD-3231 Independent 300mW 3uA@2V 4.4V~5V 4.7V 80Ω SOD-323 Zener Diodes ROHSNexperiaZener Diodes
BAV16W
SOD-123-55℃~+150℃ 1 Independent 1.25V@150mA 1uA@75V 2A 300mA 85V SOD-123 Diodes - General Purpose ROHSDiodes IncorporatedDiodes - General PurposeBSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsPESD1CAN
SOT-23-65℃~+150℃ 11pF 1nA 2 200W@8/20us 24V 30.3V 3A@8/20us 70V Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 SOT-23 ESD and Surge Protection (TVS/ESD) ROHSNexperiaESD And Surge Protection (TVS/ESD)
Parts
196| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 180 | Resistor_SMD:R_0603_1608Metric | R9, R15, R17, R20, R27, R30, R31, R41, R51, R53, R56, R61, R73, R79, R82 |
| 14 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R4, R19, R29, R39, R49, R59, R62, R63, R64, R71, R77, R81, R87 |
| 10 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C3, C4, C5, C6, C8, C13, C15, C18, C20 |
| 10 | 1m | Resistor_SMD:R_0603_1608Metric | R8, R16, R25, R36, R42, R46, R52, R65, R72, R74 |
| 10 | R | Resistor_SMD:R_0603_1608Metric | R40, R88, R89, R90, R91, R93, R95, R96, R97, R98 |
| 8 | 10 | Resistor_SMD:R_1206_3216Metric | Rb1, Rb2, Rb3, Rb4, Rb5, Rb6, Rb7, Rb8 |
| 8 | 12k | Resistor_SMD:R_0603_1608Metric | R18, R28, R38, R48, R58, R70, R80, R86 |
| 8 | 150 | Resistor_SMD:R_0603_1608Metric | R12, R23, R34, R44, R54, R66, R75, R83 |
| 8 | 220k | Resistor_SMD:R_0603_1608Metric | R14, R26, R37, R47, R57, R68, R78, R85 |
| 8 | 8.2k | Resistor_SMD:R_0603_1608Metric | R13, R24, R35, R45, R55, R67, R76, R84 |
| 8 | NMOS | Package_TO_SOT_SMD:TO-252-2 | Q2, Q4, Q6, Q8, Q10, Q13, Q15, Q17 |
| 8 | PNP | Package_TO_SOT_SMD:SOT-23-3 | Q1, Q3, Q5, Q7, Q9, Q11, Q14, Q16 |
| 8 | TL431A | Package_TO_SOT_SMD:SOT-23 | U6, U9, U11, U14, U16, U18, U20, U21 |
| 7 | 3m | Resistor_SMD:R_0603_1608Metric | R10, R11, R21, R22, R33, R43, R50 |
| 4 | 4u7 | Capacitor_SMD:C_0603_1608Metric | C2, C16, C22, C25 |
| 4 | BZX384-C4V7 | Diode_SMD:D_SOD-323_HandSoldering | D3, D4, D5, D6 |
| 4 | HCPL-0630 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U7, U10, U15, U24 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 10u | Capacitor_SMD:C_0603_1608Metric | C17, C19, C26 |
| 3 | 1u | Capacitor_SMD:C_0603_1608Metric | C7, C14, C23 |
| 3 | 500 | Resistor_SMD:R_0603_1608Metric | R69, R92, R94 |
| 2 | 14p | Capacitor_SMD:C_0603_1608Metric | C9, C10 |
| 2 | 2m | Resistor_SMD:R_0603_1608Metric | R32, R60 |
| 2 | 2u2 | Capacitor_SMD:C_0603_1608Metric | C11, C12 |
| 2 | 430450400 | Connector_Molex:Molex_Micro-Fit_3.0_43045-0400_2x02_P3.00mm_Horizontal | J3, J5 |
| 2 | 430450800 | Connector_Molex:Molex_Micro-Fit_3.0_43045-0800_2x04_P3.00mm_Horizontal | J7, J8 |
| 2 | 74HC4051 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U8, U23 |
| 2 | B0505MT | user:B0505MT | U3, U13 |
| 2 | HCPL-0600 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U17, U19 |
| 2 | MCP3201 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U12, U22 |
| 1 | 0 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 100u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C24 |
| 1 | 120 | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 150p | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 3k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 430451000 | Connector_Molex:Molex_Micro-Fit_3.0_43045-1000_2x05_P3.00mm_Horizontal | J6 |
| 1 | 4k7 | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 6.8u | user:CDCSAB0420-6R8M | L2 |
| 1 | B3F1060 | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1 |
| 1 | BAV16W | Diode_SMD:D_SOD-123 | D2 |
| 1 | BH1,27-10-G | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical | J2 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q12 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | Crystal KSE-7U08000MAB143ZA3 | Crystal:Crystal_SMD_SeikoEpson_TSX3225-4Pin_3.2x2.5mm | Y1 |
| 1 | ISO1050DUB | Package_SO:SOP-8_6.62x9.15mm_P2.54mm | U2 |
| 1 | LDL1117S33R | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | PESD1CAN | Package_TO_SOT_SMD:SOT-23-3 | D1 |
| 1 | PLS-6 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | ST1S14PHR | Package_SO:TI_SO-PowerPAD-8 | U4 |
| 1 | STM32F405RGTx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | SolderJumper2 | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | Дросель EMC | user:B82790C0513N201 | L1 |
Questions
How big is the BMS PCB?
It measures 103 × 57 mm and has 4 copper layers, 1.6 mm thick.
What parts does the BMS use?
196 parts, built around the ISO1050DUB, MCP3201-CI/P, ST1S14PHR and TL431A. 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 BMS KiCad files?
From the buglalis/degree repository on GitHub, at the commit this page was made from: the board is KiCad/BMS/BMS.kicad_pcb and its schematic KiCad/BMS/BMS.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BMS design in my own project?
Its repository states no licence, so its author keeps all rights: ask buglalis before reusing the design.
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