2 layers106.7 × 123.2 mm
12VSupport
svpetry/12VSupport
System to support a vehicle 12V electrical system with a LiIon battery to prevent the lead battery from depletion.
97 parts
2 layers99.4 × 60.2 mm
TeslaBMBCheck
svpetry/TeslaBMBCheck1Simple device that reads the voltage levels and temperatures from a Tesla Model S BMB board.
- Size
- 99.4 × 60.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 47
- Pads
- 157
- Tracks, vias
- 363, 114
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 8 Jun 2025
- Updated
- 23 Oct 2026
Overview
TeslaBMBCheck is an open-source printed circuit board by svpetry, from the svpetry/TeslaBMBCheck repository on GitHub. It is a 2-layer board of 99.4 × 60.2 mm with 42 parts on 47 nets, routed with 363 tracks and 114 vias.
It is built around the USBLC6-4, BSS138 and IRLML2244, with the IRLML2502, SLA-05VDC-SL-C and SS14 among its other parts. Its parts include 11 resistors, 9 capacitors, 3 transistors, 3 connectors and 3 switches. It belongs with the PIC boards of this library.
Main components
6USBLC6-4
UncategorisedSTMicroelectronics
BSS138
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 ROHShongjiachengMOSFETsIRLML2244
SOT-23MOSFETsLeiditechIRLML2502
SOT-23-40℃~+150℃ 1 N-channel 1.25W 20V 4.2A 50mΩ@2.5V 600mV 66pF 740pF 8nC@10V SOT-23 MOSFETs ROHSGuangdong HottechMOSFETs
SLA-05VDC-SL-C
插件,32x27.6mm100mΩ 10ms 10ms 250V@AC 27Ω 30A 5V 6 900mW Non-Polarized - Single Coil One set changeover: 1C (SPDT - changeover) 插件,32x27.6mm Power Relays ROHSNingbo Songle RelayPower Relays
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdTeslaBMBCheck
Simple device that reads the voltage levels and temperatures from a Tesla Model S BMB board. It also supports balancing and clearing faults.
Module Locations
BMB Components
For each brick the BMB has a group of identical SMD components to read the voltage levels and do balancing. The elements in the topmost rectangle have already been replaced and re-sealed with epoxy.
BMB Single Group For A Brick
The components here often have corrosion damage.
BMB Resistor And Capacitor Values
These are the values I measured.
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C3, C4 |
| 3 | 10K | Resistor_SMD:R_0805_2012Metric | R7, R8, R23 |
| 3 | 4K7 | Resistor_SMD:R_0805_2012Metric | R3, R4, R5 |
| 2 | 10u | Capacitor_SMD:C_1206_3216Metric | C2, C7 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric | C15, C17 |
| 2 | 5K1 | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | ~ | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1, SW2 |
| 1 | 10 MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | 10K | Potentiometer_SMD:Potentiometer_Bourns_TC33X_Vertical | RV1 |
| 1 | 15 | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 15K | Resistor_SMD:R_0805_2012Metric | R10 |
| 1 | 1K | Resistor_SMD:R_0805_2012Metric | R19 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 47n | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | CHARGE | spetry:KF7.62_2P | J2 |
| 1 | ICSP | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J9 |
| 1 | INFO | LED_SMD:LED_0805_2012Metric | D15 |
| 1 | IRLML2244 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | IRLML2502 | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | PIC18F2480-ISO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U2 |
| 1 | POWER | spetry:HRO-TYPE-C-31-M-12 | USB1 |
| 1 | SLA-05VDC-SL-C | Relay_THT:Relay_SPDT_RAYEX-L90 | K2 |
| 1 | SS14 | Diode_SMD:D_SMA | D2 |
| 1 | TESLA_BMS | spetry:Molex_Mini-Fit_Jr_5566-10A_1x05_P4.20mm_Vertical | J1 |
| 1 | USBLC6 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | WC1602A | spetry:LCD-20x4 | DS1 |
The 37 most common of 42 parts.
Similar boards
- 2 layers139 × 94 mm
- 2 layers144.8 × 70 mm
- 2 layers65 × 56 mm
Printer HAT
mikenorgate/3d-printer-power-hat
A Raspberry PI HAT for controlling power to your 3D printer
38 parts10 - 2 layers125 × 100 mm
ESP Edgedevice
sarinsanyal/pcb-shems
This Smart Edge Node is an industrial/home energy monitoring and switching board that bridges high-voltage AC mains power with low-voltage microcontroller logic.
68 parts - 2 layers195.6 × 113 mm
HVA
blue-wind-25/JxMake
JxMake is a Java-based, cross-platform build system primarily inspired by the syntax and features of GNU Make, Perforce Jam, and CMake.
228 parts - 2 layers138 × 76 mm
- 4 layers120 × 100 mm
Questions
How big is the TeslaBMBCheck PCB?
It measures 99.4 × 60.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TeslaBMBCheck use?
42 parts, built around the USBLC6-4, BSS138, IRLML2244 and IRLML2502. 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 TeslaBMBCheck KiCad files?
From the svpetry/TeslaBMBCheck repository on GitHub, at the commit this page was made from: the board is Board/TeslaBMBCheck/TeslaBMBCheck.kicad_pcb and its schematic Board/TeslaBMBCheck/TeslaBMBCheck.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TeslaBMBCheck design in my own project?
Its repository states no licence, so its author keeps all rights: ask svpetry before reusing the design.