4 layers260 × 113 mm
4 layers63.6 × 86 mm
BECom
rjsc/BECom2BECom - Battery Emulator Companion - Open Source Hardware, designed to run dalathegreat/Battery-Emulator
- Size
- 63.6 × 86 mm
- Copper layers
- 4
- Thickness
- 1.65 mm
- Parts
- 276
- Nets
- 182
- Pads
- 838
- Tracks, vias
- 1,685, 328
- Pours
- 864
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Jun 2026
- Updated
- 23 Jun 2026
Overview
BECom is an open-source printed circuit board by rjsc, from the rjsc/BECom repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 63.6 × 86 mm with 276 parts on 182 nets, routed with 1,685 tracks and 328 vias.
It is built around the CA-IF1051VS, CA-IS2062VW and CA-IS2092VW, with the ESP32-S3-WROOM-1-N8, NSG0462UQ and TPS54202DDC among its other parts. Its parts include 62 capacitors, 53 resistors, 35 transistors, 24 diodes and 19 ICs. It belongs with the power boards and the ESP32 boards of this library.
Main components
12
CA-IF1051VS
SOIC-8-55℃~+125℃ 2.5mA 4.5V~5.5V 5Mbps 80mA CAN FD Transceiver SOIC-8 CAN Transceivers ROHSChipanalogCAN Transceivers
CA-IS2062VW
SOIC-16-40℃~+125℃ 150kV/us 1Mbps 3750 4.5V~5.5V 4.75V~5.25V SOIC-16 Isolated CAN Transceivers (with Power) ROHSChipanalogIsolated CAN Transceivers (With Power)
CA-IS2092VW
SOIC-16-300mil-40℃~+125℃ 150kV/us 3.3V、5V 3.3V、5V 3750 500Kbps Half-Duplex SOIC-16-300mil Isolated RS-485/422 Transceivers with power ROHSChipanalogIsolated RS-485/422 Transceivers With Power
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
NSG0462UQ
QFN-16-EP(3x3)-40℃~+125℃ 300mA 300ns 500uA 50mA 5V~28V 6 60ns Half-Bridge、Three Phase MOSFET Under Voltage Protection、Overtemperature protection (OTP) QFN-16-EP(3x3) Gate DriversWXNSICGate Drivers
TPS54202DDC
SOT23-64.5V to 28V Input, 2A Output, EMI Friendly Synchronous Step Down ConverterTexas InstrumentsUncategorised
LMV321
SOT-23-5L-2.75V~-1.25V、1.25V~2.75V 0℃~+70℃ 1 10pA 10pA 1MHz 2.1V~5.5V 20mA 20nV/√Hz@10kHz 520V/ms 60uA 70dB 800uV Built-in compensation Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5L Operational Amplifier ROHSJiangsu Changjing Electronics Technology (CJ)Operational Amplifier
MX25947ES
ESOP8-40℃~+125℃ 1 1.4mm 28mΩ 3.9mm 4.5V~24V 4.9mm Integrated FET Surface Mount ESOP8 Surge Protection Devices (SPDs) ROHSWuxi MaxinmicroSurge Protection Devices (SPDs)
LTV-217-B-G
SOP-4-175mil-55℃~+110℃ 1 1.2V 200mW 2us 3.75kV 3us 400mV@8mA,2.4mA 50% 50mA 50mA 600% 6V 70V DC Phototransistor SOP-4-175mil Transistor, Photovoltaic Output Optoisolators ROHSLite-OnTransistor, Photovoltaic Output OptoisolatorsSN74CBTLV3257D
SOIC-16-40℃~+85℃ 2.3V~3.6V 250ps 2:1 5.3ns 5.5ns 7Ω SOIC-16 Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, MultiplexersSRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
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
README
README.mdBECom
BECom - Battery Emulator Companion
Open Source Hardware, designed to run: https://github.com/dalathegreat/Battery-Emulator
Made with KiCad
Parts
276| Qty | Value | Footprint | References |
|---|---|---|---|
| 27 | 100nF | BECom:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C14, C15, C18, C19, C20, C21, C32, C33, C34, C36, C43, C44, C45, C46, C47 +11 |
| 21 | BMS Wake | BECom:TestPoint_Pad_D1.5mm | TP13, TP14, TP15, TP16, TP18, TP20, TP21, TP22, TP23, TP24, TP25, TP26, TP27, TP28, TP29, TP30 +5 |
| 19 | AO3400A | BECom:SOT-23 | Q12, Q16, Q17, Q18, Q20, Q21, Q22, Q23, Q24, Q25, Q26, Q27, Q31, Q32, Q34, Q35 +3 |
| 12 | AO3401A | BECom:SOT-23 | Q1, Q3, Q4, Q5, Q6, Q9, Q10, Q11, Q29, Q30, Q39, Q40 |
| 9 | 1812L020/90GR | BECom:R_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F1, F2, F3, F4, F5, F6, F7, F8, F9 |
| 9 | SMD3225-090N | BECom:L_1210_3225Metric_Pad1.42x2.65mm_HandSolder | GD1, GD2, GD3, GD4, GD5, GD6, GD7, GD8, GD9 |
| 8 | 100pF | BECom:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C25, C26, C28, C29, C30, C31, C48, C49 |
| 8 | SMB6.8CA | BECom:D_SMB | D12, D13, D14, D15, D16, D17, D24, D25 |
| 7 | 100k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R8, R14, R31, R44, R57, R62 |
| 7 | 10k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18, R19, R22, R29, R30, R37, R50 |
| 6 | 1uF | BECom:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C16, C17, C24, C27, C35, C40 |
| 5 | 10uF | BECom:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C41, C42, C52, C60 |
| 5 | 1k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R51, R52, R63, R64, R65 |
| 5 | 22uF | BECom:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C10, C11, C37, C59 |
| 4 | 10uF | BECom:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C12, C13, C22, C23 |
| 4 | 120R | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R20, R21, R24, R38 |
| 4 | B5819W | BECom:D_SOD-123 | D5, D10, D18, D22 |
| 4 | SDCW3225S-2-102TF | BECom:FILTER-SMD_4P-L3.2-W2.5-BL | FL1, FL2, FL3, FL4 |
| 3 | 1.8k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R23, R28, R60 |
| 3 | 1N4148WS | BECom:D_SOD-323 | D11, D19, D26 |
| 3 | 2N7002 | BECom:SOT-23 | Q19, Q33, Q41 |
| 3 | 4.7k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R42, R68, R71 |
| 3 | 600R@100MHz | BECom:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1, FB2, FB3 |
| 3 | GND | BECom:TestPoint_Pad_D1.5mm | TP10, TP11, TP17 |
| 2 | 15uH | BECom:L_Sunlord_MWSA0603S | L1, L2 |
| 2 | 1N5819WS | Diode_SMD:D_SOD-323 | D4, D6 |
| 2 | 1N5819WS | BECom:D_SOD-323 | D1, D2 |
| 2 | 2.7k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R27, R59 |
| 2 | 20pF | BECom:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 2 | 22k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R26, R58 |
| 2 | 3.9k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R25, R61 |
| 2 | 33R | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R32, R33 |
| 2 | 39k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R67, R70 |
| 2 | 47pF | BECom:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C9, C58 |
| 2 | 5.1k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R34, R35 |
| 2 | 56k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13, R43 |
| 2 | 680R | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R69, R72 |
| 2 | 8.2k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12, R66 |
| 2 | CA-IF1051VS | BECom:SOIC-8_3.9x4.9mm_P1.27mm | U7, U12 |
| 2 | LM74800 | BECom:WSON-12_L3.0-W3.0-P0.50-TL-EP-2 | U18, U24 |
| 2 | LOGO | BECom:LOGO | G***, G*** |
| 2 | MCP2518FD-xSL | BECom:SOIC-14_3.9x8.7mm_P1.27mm | U2, U13 |
| 2 | MX25947ES | BECom:ESOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP-1 | U9, U14 |
| 2 | NSG0462UQ | BECom:QFN-16_L3.0-W3.0-P0.50-BL-EP1.9 | U16, U20 |
| 2 | SMCJ20CA | BECom:D_SMC | D3, D20 |
| 2 | SMD Push Button | BECom:SW-SMD_L3.9-W3.0-P4.45 | SW4, SW5 |
| 2 | SW_DIP_x03 | BECom:SW_DIP_SPSTx03_Piano_CTS_Series194-3MSTN_W7.62mm_P2.54mm | SW1, SW6 |
| 2 | Screw_Terminal_01x08 | BECom:PhoenixContact_MC_1,5_8-G-3.5_1x08_P3.50mm_Horizontal | J1, J2 |
| 2 | TPS54202DDC | BECom:SOT-23-6 | U4, U22 |
| 2 | V BMS | BECom:TestPoint_Pad_D1.5mm | TP12, TP36 |
| 2 | ~ | BECom:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C38, C39 |
| 1 | +3.3V | BECom:TestPoint_Pad_D1.5mm | TP4 |
| 1 | +5V | BECom:TestPoint_Pad_D1.5mm | TP3 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 100mR | BECom:R_1206_3216Metric | R53 |
| 1 | 11V | BECom:D_SOD-523 | D7 |
| 1 | 12k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R73 |
| 1 | 33k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R36 |
| 1 | 4.7uF | BECom:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 1 | 40MHz | BECom:Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | 5.6k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R45 |
| 1 | 680k | BECom:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | Boot | BECom:TestPoint_Pad_D1.5mm | TP2 |
| 1 | CA-IS2062VW | BECom:SOIC-16_L10.3-W7.5-P1.27-LS10.3-BL | U6 |
| 1 | CA-IS2092VW | BECom:SOIC-16_L10.3-W7.5-P1.27-LS10.3-BL | U5 |
| 1 | Conn_02x02_Odd_Even | BECom:PinSocket_2x02_P1.27mm_Vertical_SMD | J6 |
| 1 | Conn_02x15_Odd_Even | BECom:PinSocket_2x15_P1.27mm_Vertical_SMD | J5 |
| 1 | ESP32-S3-WROOM-1 | BECom:ESP32-S3-WROOM-1U | U1 |
| 1 | HX TYPE-C 14P LT H10.0 | BECom:USB-C-TH_918-468K2029E50000 | USB1 |
| 1 | LMV321 | BECom:SOT-23-5 | U23 |
| 1 | LTV-217-B-G | BECom:SSOP-4_4.4x2.6mm_P1.27mm | U8 |
| 1 | Pwr In | BECom:TestPoint_Pad_D1.5mm | TP6 |
| 1 | Reset | BECom:TestPoint_Pad_D1.5mm | TP1 |
| 1 | SMAJ13A | BECom:D_SMA | D21 |
| 1 | SMF5.0A | BECom:D_SMF | D23 |
| 1 | SN74CBTLV3257 | BECom:SSOP-16_3.9x4.9mm_P0.635mm | U26 |
| 1 | SRV05-4 | BECom:SOT-23-6 | U10 |
| 1 | SS8050 | BECom:SOT-23 | Q37 |
| 1 | Screw_Terminal_01x02 | BECom:PhoenixContact_MC_1,5_2-G-3.5_1x02_P3.50mm_Horizontal | J8 |
| 1 | Screw_Terminal_01x03 | BECom:PhoenixContact_MSTBA_2,5_2-G_1x02_P5.00mm_Horizontal | J4 |
The 265 most common of 276 parts.
Questions
How big is the BECom PCB?
It measures 63.6 × 86 mm and has 4 copper layers, 1.65 mm thick.
What parts does the BECom use?
276 parts, built around the CA-IF1051VS, CA-IS2062VW, CA-IS2092VW and ESP32-S3-WROOM-1-N8. 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 BECom KiCad files?
From the rjsc/BECom repository on GitHub, at the commit this page was made from: the board is v1.1/BECom.kicad_pcb and its schematic v1.1/BECom.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BECom design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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