4 layers42 × 42 mm
2 layers81.7 × 61.8 mm
Bms okmr
AndreCox/OKMR_BMSBMS Designed for the Okanagan Marine Robotics Club
- Size
- 81.7 × 61.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 102
- Nets
- 118
- Pads
- 383
- Tracks, vias
- 187, 7
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 Feb 2026
- Updated
- 5 Mar 2026
Overview
Bms okmr is an open-source printed circuit board by AndreCox, from the AndreCox/OKMR_BMS repository on GitHub. It is a 2-layer board of 81.7 × 61.8 mm with 102 parts on 118 nets, routed with 187 tracks and 7 vias.
It is built around the STM32C092FBP6, ISO1044BD and WRB1203S-3WR2, with the BQ7694202PFBR, NVMFS5C430NAFT1G-YE-VB and 5.0SMDJ20A among its other parts. Its parts include 34 resistors, 25 capacitors, 16 transistors, 12 diodes and 6 connectors. It belongs with the power boards and the STM32 boards of this library.
Main components
11
STM32C092FBP6
TSSOP-20TSSOP-20 Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
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
WRB1203S-3WR2
SIP,21.9x9.2mm-40℃~+85℃ 1 1.5kV 11.2mm 21.9mm 250kHz 2700uF 3.3V 35mVp-p 3W 76% 9.2mm 909mA 9V~18V Regulated type Short Circuit Protection、Automatic fault recovery SIP,21.9x9.2mm Isolated Power Modules ROHSEVISUNIsolated Power Modules
BQ7694202PFBR
TQFP-48(7x7)-40℃~+85℃ 286uA 3~10 4.7V~55V I2C Lithium Battery、LiFePO4 Battery Protection IC、Monitoring IC Support TQFP-48(7x7) Battery Management ROHSTexas InstrumentsBattery Management
NVMFS5C430NAFT1G-YE-VB
DFN-8(5x6)DFN-8(5x6) MOSFETs ROHSVBsemi ElecMOSFETs
5.0SMDJ20A
SMC(DO-214AB)-55℃~+150℃ 155A 20V 22.2V 32.4V 5kW 5uA IEC 61000-4-2 TVS Unidirectional SMC(DO-214AB) ESD and Surge Protection (TVS/ESD) ROHSLiownESD And Surge Protection (TVS/ESD)
BAS16
SOT-231.25V@150mA 100V 215mA 250mW 4A 4ns 500nA@80V Independent SOT-23 Switching Diodes ROHSNexperiaSwitching DiodesMMBT5401-7-F
SOT-23-55℃~+150℃ 1 PNP 100MHz 150V 200mV 310mW 50nA 5V 60 600mA PNP SOT-23 Bipolar (BJT) ROHSDiodes IncorporatedBipolar (BJT)
SMLVN6RGB1U1
SMD2835-6P-40℃~+85℃ 0.6mm 2.8mm 3.5mm 400mW B:400mcd、R:700mcd、G:1200mcd Discrete Diode G:520nm~535nm、B:465nm~475nm、R:61nm~629nm R:2.1V、B:3.3V、G:3.3V R:50mA、G:40mA、B:40mA White Frosted Lens SMD2835-6P RGB LEDs ROHSROHM SemiconductorRGB LEDs
SS8050
SOT-323-55℃~+150℃ 1 NPN 1.5A 100MHz 100nA 200 25V 300mW 500mV 5V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)SI2319DDS
SOT-23-55℃~+150℃ 1 P-Channel 1.7W 100mΩ@4.5V 19nC@10V 2.5V 3.6A 40V 43pF 650pF P-Channel SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs
Parts
102| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | NVMFS5C430NAFT1G-YE | Samacsys:NVMFS5C430NAFT1GYE_KICAD_FOOTPRINT | Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q13, Q14, Q15, Q16 |
| 9 | 51 | Resistor_SMD:R_0603_1608Metric | R10, R11, R12, R13, R16, R17, R18, R19, R24 |
| 6 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C12, C13, C14, C15, C16, C17 |
| 6 | 100 | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R20, R22, R25 |
| 5 | 20 | Resistor_SMD:R_0603_1608Metric | R4, R5, R6, R7, R8 |
| 5 | 5.0SMDJ20A | Diode_SMD:D_SMA | D2, D5, D8, D10, D12 |
| 5 | C | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C6, C9 |
| 4 | 100nF | Capacitor_SMD:C_0603_1608Metric | C20, C22, C23, C25 |
| 4 | 5.1K | Resistor_SMD:R_0603_1608Metric | R29, R30, R31, R32 |
| 3 | 10M | Resistor_SMD:R_0603_1608Metric | R14, R15, R26 |
| 3 | 470pF | Capacitor_SMD:C_0603_1608Metric | C11, C18, C19 |
| 3 | Conn_01x02 | Connector_AMASS:AMASS_XT60-M_1x02_P7.20mm_Vertical | J1, J2, J6 |
| 3 | Thermistor | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | TH1, TH2, TH3 |
| 2 | 100pF | Capacitor_SMD:C_0603_1608Metric | C1, C7 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric | R9, R27 |
| 2 | 200 | Resistor_SMD:R_0603_1608Metric | R21, R23 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C21, C24 |
| 2 | BAS16 | Package_TO_SOT_SMD:SOT-23 | D6, D7 |
| 2 | BAT46W-7-F | Diode_SMD:D_SOD-123 | D1, D9 |
| 2 | BZT52C13-7-F | Diode_SMD:D_SOD-123 | D3, D4 |
| 2 | Conn_01x03_Pin | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J4, J5 |
| 2 | MMBT5401-7-F | Samacsys:SOT96P240X110-3N | Q10, Q11 |
| 1 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | 100K | Resistor_SMD:R_0603_1608Metric | R28 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 1K | Resistor_SMD:R_0603_1608Metric | R33 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | BQ7694202PFBR | Samacsys:QFP50P900X900X120-48N | IC1 |
| 1 | Conn_01x02 | Connector_AMASS:AMASS_XT60-F_1x02_P7.20mm_Vertical | J3 |
| 1 | Fuse | MIDI_fuse:MIDI_FUSE_M5 | F1 |
| 1 | ISO1044BD | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | LTC4359-MS8 | Package_SO:MSOP-8_3x3mm_P0.65mm | U1 |
| 1 | R_Shunt | Samacsys:WSK1216L2000FEA | R34 |
| 1 | SMLVN6RGB | LED_SMD:LED_ROHM_SMLVN6 | D15 |
| 1 | SS8050 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | STM32C092FBP6 | Samacsys:SOP65P640X120-20N | IC2 |
| 1 | Si2319DDS | Package_TO_SOT_SMD:SOT-23 | Q12 |
| 1 | WRB1203S-3WR2 | Samacsys:WRB1203S3WR2 | PS1 |
Questions
How big is the Bms okmr PCB?
It measures 81.7 × 61.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bms okmr use?
102 parts, built around the STM32C092FBP6, ISO1044BD, WRB1203S-3WR2 and BQ7694202PFBR. 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 okmr KiCad files?
From the AndreCox/OKMR_BMS repository on GitHub, at the commit this page was made from: the board is bms_okmr.kicad_pcb and its schematic bms_okmr.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bms okmr design in my own project?
Its repository states no licence, so its author keeps all rights: ask AndreCox before reusing the design.
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