4 layers121.4 × 102 mm
4 layers179.7 × 127.9 mm
Backplane Board
CabrilloRoboticsClub/robosub_electricalThe electronics for RoboSub 2025
- Size
- 179.7 × 127.9 mm
- Copper layers
- 4
- Thickness
- 1.96 mm
- Parts
- 189
- Nets
- 113
- Pads
- 604
- Tracks, vias
- 801, 604
- Pours
- 16
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 12 Aug 2024
- Updated
- 13 Sep 2025
Overview
Backplane Board is an open-source printed circuit board by CabrilloRoboticsClub, from the CabrilloRoboticsClub/robosub_electrical repository on GitHub, published under the MIT licence. It is a 4-layer board of 179.7 × 127.9 mm with 189 parts on 113 nets, routed with 801 tracks and 604 vias.
It is built around the PKJ7213WPI, PKU3511SPI and PINA740AIREMR, with the 0ZCG0300FF2B, SM4002 and ZXMN3A14FTA among its other parts. Its parts include 48 resistors, 41 connectors, 27 capacitors, 27 diodes and 12 fuses. It belongs with the RP2040 boards of this library.
Main components
10PKJ7213WPI
-- Power Module/Power Supply ROHSFlex Power ModulesPower Supply Module,Power SuppliesPKU3511SPI
--40℃~+100℃ 1 10.4mm 10A 25mm 35.3mm 440kHz 5000uF 5V 80mVp-p 90% 9V~36V Short Circuit Protection、Overheat Protection、Overvoltage Protection、Under Voltage Protection、Automatic fault recovery、Programmable output voltage - Isolated Power Modules ROHSFlex Power ModulesDC-DC Power ModulesPINA740AIREMR
VQFN14UncategorisedTexas Instruments
0ZCG0300FF2B
1812-40℃~+85℃ 100A 12mΩ、12mΩ、12mΩ 1W 3A 40mΩ 4s 5A 6V 1812 Resettable Fuses ROHSBel FuseResettable Fuses
SM4002
DO-213AB-50℃~+175℃ 1 Independent 1.1V@1A 100V 1A 44A 5uA@100V DO-213AB Diodes - General Purpose ROHSDIOTECDiodes - General Purpose
ZXMN3A14FTA
SOT-23-55℃~+150℃ 1 N-channel 1W 2.2V 3.2A 30V 448pF 65mΩ@10V 8.6nC@10V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
BM03B-SRSS-TB
Header SR 1.0 SMT top entry, 1mm pitchJSTUncategorised
FDMS86163P
PQFN-8(4.9x5.8)-55℃~+150℃ 1 P-Channel 100V 104W 22mΩ@10V 35pF 4.085nF 4V 50A 59nC@10V PQFN-8(4.9x5.8) MOSFETs ROHSonsemiMOSFETs
MBR120VLSFT1G-TP
SOD-123FUncategorisedTECH PUBLIC
SI7615ADN-T1-GE3(ES)
PDFN-8L(3x3)PDFN-8L(3x3) MOSFETs ROHSElecSuperMOSFETs
README
README.mdElectrical stack up for RoboSub 2025 Lasershark
For documention take a look at: https://github.com/CabrilloRoboticsClub/robosub_electrical/wiki
Desing requirments document: https://docs.google.com/document/d/1Yq5ZJsRXAqFWiCNv81dD8MaTSv5xLRyw4zoX7664jJk/edit?usp=sharing
Parts
189| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | Conn_01x02_Pin | XT30U-F_IW:AMASS_XT30U-M_1x02_P5.0mm_Vertical_IW_3d | J9, J10, J11, J12, J13, J14, J15, J16, J17, J18, J22, J23, J24, J25 |
| 12 | 10k | Resistor_SMD:R_0805_2012Metric | R28, R29, R30, R31, R32, R33, R37, R38, R39, R40, R42, R43 |
| 8 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C9, C10, C11, C12, C15, C16, C17, C18 |
| 8 | 330m | footprints:RES_KDV12_OHM-L | R7, R8, R9, R10, R14, R15, R16, R17 |
| 7 | LED_Red | LED_SMD:LED_0603_1608Metric | D2, D17, D18, D19, D26, D27, D28 |
| 6 | 0ZCG0300FF2B | Fuse:Fuse_1812_4532Metric | F1, F2, F3, F4, F5, F6 |
| 6 | 2.2uF+/35V+ | Capacitor_SMD:C_0805_2012Metric | C21, C22, C23, C24, C25, C26 |
| 6 | 2k | Resistor_SMD:R_0805_2012Metric | R34, R35, R36, R41, R44, R45 |
| 6 | Conn_01x02 | Connector_Molex:Molex_Micro-Latch_53253-0270_1x02_P2.00mm_Vertical | J37, J38, J39, J40, J41, J42 |
| 6 | Conn_01x02_Pin | 3.5_pitch_2x2_block:TerminalBlock_4Ucon_1x02_P3.50mm_Horizontal_updated | J6, J7, J8, J19, J20, J21 |
| 6 | DNP | Inductor_SMD:L_1206_3216Metric | R4, R5, R11, R12, R18, R19 |
| 6 | Fuse | Fuse:Fuse_0805_2012Metric | F7, F8, F9, F10, F11, F12 |
| 6 | LED | LED_SMD:LED_0603_1608Metric | D3, D4, D5, D7, D30, D31 |
| 6 | LED_Green | LED_SMD:LED_0603_1608Metric | D11, D12, D13, D20, D22, D23 |
| 6 | SM4002 | Diode_SMD:D_SOD-123F | D14, D15, D16, D21, D24, D25 |
| 6 | ZXMN3A14F | Package_TO_SOT_SMD:SOT-23 | Q4, Q5, Q6, Q7, Q8, Q9 |
| 5 | 680u | Capacitor_THT:CP_Radial_D13.0mm_P5.00mm | C6, C7, C8, C13, C14 |
| 5 | TestPoint | TestPoint:TestPoint_Pad_2.5x2.5mm | TP3, TP4, TP5, TP6, TP7 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R20, R24, R46 |
| 4 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J27, J28, J29, J36 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_4.3mm_M4_Pad_Via | H1, H2, H3, H4 |
| 3 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP3, JP4, JP5 |
| 3 | TestPoint | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP1, TP2, TP8 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R13 |
| 2 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R50, R52 |
| 2 | 330 uF | Capacitor_SMD:CP_Elec_6.3x7.7 | C19, C20 |
| 2 | 330uF | EEV-TG2A331M:CAP_EEVTG2A331M | C1, C2 |
| 2 | 4.7k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R21, R22 |
| 2 | BM03B-SRSS-TB | Connector_JST:JST_SH_BM03B-SRSS-TB_1x03-1MP_P1.00mm_Vertical | J30, J33 |
| 2 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J34, J35 |
| 2 | FDMS86163P | FDMS86163P:FDMS86163P | Q1, Q2 |
| 2 | PKJ7213WPI | Library:PKJ7213WPI | U3, U4 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2 |
| 1 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5 |
| 1 | 0.1u 100V | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3 |
| 1 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R23 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R47 |
| 1 | 10u 6.3v | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C4 |
| 1 | 20K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R48 |
| 1 | 4.7k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | 8.8k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 1 | BZT52C10LP-7 | Diode_SMD:D_SOD-882 | D1 |
| 1 | C | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C27 |
| 1 | Conn_01x02_Pin | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | J26 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Conn_01x02_Pin | Connector_AMASS:AMASS_XT60-M_1x02_P7.20mm_Vertical | J3 |
| 1 | Conn_01x04 | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J31 |
| 1 | Conn_01x05_Socket | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J32 |
| 1 | Conn_01x07_Female | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | J4 |
| 1 | DNP | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R51 |
| 1 | MBR120VLSFT1G | Diode_SMD:D_SOD-123F | D6 |
| 1 | Micro_SD_Card_Det2 | Connector_Card:microSD_HC_Hirose_DM3D-SF | J44 |
| 1 | PINA740AIREMR | PINA740AIREMR:INA740BIREMR | U2 |
| 1 | PKU3511SPI | PKU3511SPI:PKU 3500S_FPM | U5 |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD_TH | U6 |
| 1 | SI7615ADN-T1-GE3 | SI7615ADN-T1-GE3:SON8_SI7615ADN-T1-GE3_VIS-L | Q3 |
| 1 | SSD1306 | SSD1306IW:MODULE_DM-OLED096-636 | Brd1 |
| 1 | SW_DPST_x2 | TerminalBlock:TerminalBlock_Xinya_XY308-2.54-2P_1x02_P2.54mm_Horizontal | SW1 |
| 1 | ZXTR2005ZQ-13 | Package_TO_SOT_SMD:SOT-89-3_Handsoldering | U1 |
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Questions
How big is the Backplane Board PCB?
It measures 179.7 × 127.9 mm and has 4 copper layers, 1.96 mm thick.
What parts does the Backplane Board use?
189 parts, built around the PKJ7213WPI, PKU3511SPI, PINA740AIREMR and 0ZCG0300FF2B. 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 Backplane Board KiCad files?
From the CabrilloRoboticsClub/robosub_electrical repository on GitHub, at the commit this page was made from: the board is Backplane_Board/Backplane_Board.kicad_pcb and its schematic Backplane_Board/12V_Power_Bus.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Backplane Board design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).