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Create cost-optimized Lite variant of the BMS C1 v0.4.1
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martinjaeger committed Jun 25, 2024
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# Libre Solar BMS C1
# Libre Solar BMS C1 lite

![Development Stage](https://img.shields.io/badge/development%20stage-eval-yellow.svg) Tested prototype, only minor issues left.

This repository contains the files for ongoing development of the Libre Solar BMS C1.
This branch contains all required files for the cost-optimized Libre Solar BMS C1 **lite**. The **full** version of the BMS can be found in the [main branch](https://github.com/LibreSolar/bms-c1) of this repository.

**Remark:** This BMS was previously named **BMS 16S100 SC**. It was renamed to C1 (with C for compact/centralized) because the maximum current and supported number of cells depend on the parts actually populated on the PCB, so these specs should not be encoded in the PCB name.

The development of this BMS is funded by the [EnAccess foundation](https://enaccess.org).

Schematic: [PDF file](build/bms-c1.pdf)

Bill of Materials: [CSV file](build/bms-c1_bom.csv) or [interactive HTML BOM](https://libre.solar/bms-c1/bms-c1_ibom.html)
Bill of Materials: [CSV file](build/bms-c1_bom.csv)

Firmware repository: [LibreSolar/bms-firmware](https://github.com/LibreSolar/bms-firmware)

![BMS C1](build/bms-c1.jpg)

User manual: [libre.solar/bms-c1/manual/](https://libre.solar/bms-c1/manual/)
User manual (for non-lite version): [libre.solar/bms-c1/manual/](https://libre.solar/bms-c1/manual/)

Mechanical CAD file: [bms-c1.FCStd](housing/bms-c1.FCStd)

Expand All @@ -28,8 +28,10 @@ Test report: [testing/v0.3](testing/v0.3/README.md)

## Features

The main difference compared to full-featured version of the BMS is the reduced number of MOSFETs, removed CAN and RS-485 communication interfaces, cheaper cell connectors (JST PH) and solder-pads instead of SMT screw terminals.

- 3 to 16 Li-ion cells in series
- Continuous current: 70-100A (depending on used MOSFETs and heat sink)
- Continuous current: ~~70-100A~~ 50-70A (depending on used MOSFETs and heat sink)
- Cell types: LiFePO4, Li-ion NMC and others (customizable)
- Measurements
- Cell voltages
Expand All @@ -40,16 +42,16 @@ Test report: [testing/v0.3](testing/v0.3/README.md)
- Integrated high-side MOSFET switch and current sensor
- Espressif ESP32-C3 microcontroller
- Communication interfaces:
- CAN
- RS-485 (connector shared with CAN)
- ~~CAN~~
- ~~RS-485 (connector shared with CAN)~~
- USB (CDC-ACM and JTAG)
- USART
- I2C
- Bluetooth Low Energy
- WiFi
- Hardware features
- 4-layer PCB
- M5 screw terminals
- ~~M5 screw terminals~~ Solder pads for high-current connections
- Heat sink at back side
- Applications
- Off-grid storage
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127 changes: 63 additions & 64 deletions build/bms-c1_bom.csv
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Component,References,Value,Footprint,Description,Quantity Per PCB,Manufacturer,PartNumber,Remarks,LCSC
1,C27 C29 C32 C33 C35 C38,100pF,C_0603_1608,Unpolarized capacitor,6,Samsung Electro-Mechanics,CL10C101JC8NNNC,"100V, C0G/NP0",C296717
2,C19 C21 C24 C28 C31 C34 C36 C37 C40 C48 C49 C50 C51 C52,100nF,C_0603_1608,Unpolarized capacitor,14,Samsung Electro-Mechanics,CL10B104KC8NNNC,"min. 100V, X7R",C15725
3,C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C26,220nF,C_0603_1608,Unpolarized capacitor,17,Samsung Electro-Mechanics,CL10B224KA8NNNC,"min. 25V, X7R",C21120
4,C25,1µF,C_1206_3216,Unpolarized capacitor,1,Samsung Electro-Mechanics,CL31B105KCHNNNE,"min. 100V, X5R",C13832
5,C30 C47,1µF,C_0603_1608,Unpolarized capacitor,2,Samsung Electro-Mechanics,CL10A105KA8NNNC,"min. 25V, X5R min. 10V, X5R",C5673
6,C46,10µF,C_0805_2012,Unpolarized capacitor,1,Samsung Electro-Mechanics,CL21A106KPFNNNE,"min. 10V, X5R",C17024
7,C20,2.2µF,C_0603_1608,Unpolarized capacitor,1,Samsung Electro-Mechanics,CL10A225KP8NNNC,"min. 10V, X7R",C1607
8,C22 C23,2.2µF,C_1210_3225,Unpolarized capacitor,2,Samsung Electro-Mechanics,CL32B225KCJSNNE,"min. 100V, X5R",C55151
9,C17 C18,47µF,C_1210_3225,Unpolarized capacitor,2,Samsung Electro-Mechanics,CL32B476MPJNNNE,"min. 10V, X5R",C525654
10,D14 D17 D21 D24,16V,D_SOD-123,Zener diode,4,Diodes Incorporated,MMSZ5246B-7-F,Alternative: Vishay MMSZ5246B-HE3-08,C282317
11,D11,3.6V,D_SOD-123,Zener diode,1,onsemi,MMSZ4685T1G,,C66886
12,D19,5.1V,D_SOD-323,Zener diode,1,Diodes Incorporated,BZT52C5V1S-7-F,Vishay BZX384C5V1,C151348
13,D23,75V,D_SOD-123,Zener diode,1,Diodes Incorporated,MMSZ5267BT1G,,C266795
14,D2 D5 D10 D15 D16 D20,BAT46W,D_SOD-123,Schottky diode,6,Diodes Incorporated,BAT46W-7-F,Alternative: MCC BAT46WHE3-TP,C83152
15,D3 D4,ESD5B5.0ST1G,D_SOD-523,"ESD protection diode, 5.0Vrwm, SOD-923",2,onsemi,ESD5B5.0ST1G,,C93623
16,D22,MURS360,D_SMC,Diode,1,Diodes Incorporated,MURS360,Alternative: Other MURS360,C388245
17,D8,PESD2CANFD,SOT-23,"Dual Line CAN Bus Protector, 24Vrwm",1,Nexperia,PESD2CANFD24V-TR,Alternative: onsemi ESDONCAN1LT,C552486
18,D1,PMEG10010ELRX,D_SOD-123F,Schottky diode,1,Nexperia,PMEG10010ELRX,Alternative: Nexperia PMEG10030ELPX,C179426
19,D13,PMEG10010ELRX,D_SOD-123F,Schottky diode,1,Nexperia,PMEG10010ELRX,Alternative: Nexperia PMEG10030ELPX,C179426
20,D12,SMCJ70A,D_SMC,Zener diode,1,Bourns,SMCJ70A,Alternative: Diodes Inc. SMCJ70A-13-F,C135194
21,D9,VSS8D3M10-M3/I,D_SOD-128,Schottky diode,1,Vishay,VSS8D3M10-M3/H,Alternative: Nexperia PMEG10030ELPX,C3760174
22,J5,B2B-PH-SM4,JST_PH_B2B-PH-SM4-TB_1x02-1MP_P2.00mm_Vertical,"Generic connectable mounting pin connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/)",1,JST,B2B-PH-SM4-TB(LF)(SN),Alternative: Würth 620302124022,C160352
23,J4,B3B-PH-SM4,JST_PH_B3B-PH-SM4-TB_1x03-1MP_P2.00mm_Vertical,"Generic connectable mounting pin connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/)",1,JST,B3B-PH-SM4-TB(LF)(SN),Alternative: Würth 620303124022,C160353
24,J2 J6,B4B-PH-SM4,JST_PH_B4B-PH-SM4-TB_1x04-1MP_P2.00mm_Vertical,"Generic connectable mounting pin connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/)",2,JST,B4B-PH-SM4-TB(LF)(SN),Alternative: Würth 620304124022,C160354
25,J1,MicroFit 2x12,Molex_Micro-Fit_3.0_43045-2410_2x12-1MP_P3.00mm_Horizontal,"Generic connectable mounting pin connector, double row, 02x12, top/bottom pin numbering scheme (row 1: 1...pins_per_row, row2: pins_per_row+1 ... num_pins), script generated (kicad-library-utils/schlib/autogen/connector/)",1,Würth,662024231722,Mating connector: 662024113322,
26,J3,USB_C_Receptacle_USB2.0,USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal,USB 2.0-only Type-C Receptacle connector,1,GCT,USB4105-GF-A,,
27,L2,22µH,Bourns_SRN8040TA,"Inductor, small symbol",1,Bourns,SRN8040-220M,Alternative: Tayo Yuden NR8040T220M,C92946
28,LED2,LED green,LED_0603_1608Metric,Light emitting diode,1,Lite-On,LTST-C190KGKT,green,C125094
29,LED1,LED red,LED_0603_1608Metric,Light emitting diode,1,Lite-On,LTST-C190KRKT,red,C94869
30,P1 P2 P3 P4,CONN_01X01,Wuerth_PowerOne_SMD_LF990005,"Generic connector, single row, 01x01, script generated (kicad-library-utils/schlib/autogen/connector/)",4,Erni,225852-E,Alternative: Würth LF990005,C3217898
31,P5,CONN_01X01,SolderWirePad_1x01_SMD_5x10mm,"Generic connector, single row, 01x01, script generated (kicad-library-utils/schlib/autogen/connector/)",1,,,,
32,Q11,BSS123N,SOT-23,"N-MOSFET transistor, gate/source/drain",1,Infineon,BSS123N H6327,,C534594
33,Q10,BSS84,SOT-23,"P-MOSFET transistor, gate/source/drain",1,Nexperia,"BSS84AK,215",at least -20V,C127273
34,Q1,DMN10H220LE,SOT-223,"N-MOSFET transistor, gate/drain/source, drain connected to mounting plane",1,Diodes Inc.,DMN10H220LE,"100V, >2A, Alternative: IRFM120ATF",C258216
35,Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9,IPT012N08N5,Infineon_PG-HSOF-8-1_ThermalVias,"N-MOSFET transistor, gate/source/drain",8,Infineon,IPT012N08N5,Alternative: Huayi HYG012N08NS1TA,C531199
36,Q12,ZXMP10A17GTA,SOT-223-3_TabPin2,"P-MOSFET transistor, gate/drain/source",1,Diodes Incorporated,ZXMP10A17GTA,Alternative: IRFL9110TRPBF,C32998
37,R21 R37,0R,R_0603_1608,Resistor,2,Yageo,RC0603FR-070RL,,
38,R25,10,R_1206_3216,Resistor,1,Yageo,RC1206FR-0710RL,,
39,R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17,20,R_2010_5025,Resistor,17,Yageo,RC2010JK-0720RL,,C163344
40,R63,40,Bourns_PWR163,Trim-potentiometer,1,Bourns,PWR163S-25-40R0FE,,
41,R40 R41 R42 R43 R47 R48 R49 R50 R57,47,R_0603_1608,Resistor,9,Yageo,RC0603FR-0747RL,,
42,R56 R64,62R,R_0603_1608,Resistor,2,Yageo,RC0603FR-0762RL,,
43,R18,100,R_1206_3216,Resistor,1,Yageo,RC1206FR-07100RL,,
44,R19 R20 R38 R44,100,R_0603_1608,Resistor,4,Yageo,RC0603FR-07100RL,,
45,R45,300µ,R_Shunt_5931_Kelvin,Shunt resistor,1,Vishay,WSLP5931L3000FEA,Alternative: Bourns CSS2H-5930R-L300F,
46,R58,470,R_0603_1608,Resistor,1,Yageo,RC0603FR-07470RL,,
47,R22 R23 R46,1k,R_0603_1608,Resistor,3,Yageo,RC0603FR-071KL,,
48,R32 R33,2.2k,R_0603_1608,Resistor,2,Yageo,RC0603FR-072K2L,,
49,R27 R35 R53 R54,5.1k,R_0603_1608,Resistor,4,Yageo,RC0603FR-075K1L,,
50,R29 R30 R60 R68,10k,R_0603_1608,Resistor,4,Yageo,RC0603FR-0710KL,,
51,R31,35.7k,R_0603_1608,Resistor,1,Yageo,RC0603FR-0735K7L,,
52,R34,52.3k,R_0603_1608,Resistor,1,Yageo,RC0603FR-0752K3L,,
53,R51 R61,68k,R_0603_1608,Resistor,2,Yageo,RC0603FR-0768KL,,
54,R28 R65,82k,R_0603_1608,Resistor,2,Yageo,RC0603FR-0782KL,,
55,R24 R26 R62,1M,R_0603_1608,Resistor,3,Yageo,RC0603FR-071ML,,
56,R39 R52 R59,10M,R_0603_1608,Resistor,3,Yageo,RC0603FR-0710ML,,
57,RT1 RT2,10k,R_0603_1608,Thermistor with Negative Temperature Coefficient (NTC),2,TDK,NTCG163JF103FT1S,,
58,S1 S2,SW_PUSH,SW_SPST_TL3305A,Button,2,E-Switch,TL3305AF160QG,,
59,U4,BQ76952,TQFP-48_7x7mm_P0.5mm,"Lithium battery monitor, 3-16 cells, integrated balancing, I2C interface, TQFP-48",1,Texas Instruments,BQ76952PFBR,,C2862742
60,U5,ESP32-C3-MINI-1,ESP32-C3-MINI-1,"ESP32-C3-MINI-1 is a general-purpose Wi-Fi and Bluetooth LE module. This module features a rich set of peripherals and a small size, which makes it an ideal choice for smart home, industrial automation, health care, consumer electronics, etc",1,Espressif Systems,ESP32-C3-MINI-1-N4,,C2838502
61,U3,LMR38010,SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.4x3.1mm_ThermalVias," SIMPLE SWITCHER® 60-V, 3-A Step-Down Converter With 40-µA IQ",1,Texas Instruments,LMR38010SDDAR,,
62,U1,SN65HVD230,SOIC-8_3.9x4.9mm_P1.27mm,"CAN Bus Transceivers, 3.3V, 1Mbps, Low-Power capabilities, SOIC-8",1,Texas Instruments,SN65HVD230DR,Alternative: SN65HVD230QDR,C12084
63,U2,SN65HVD75,SOIC-8_3.9x4.9mm_P1.27mm,"3.3V, RS-485 Transceiver, SOIC-8",1,Texas Instruments,SN65HVD75DR,Alternative: ISL3178E,C57928
"Reference","Value","Footprint","Qty","LCSC","Manufacturer","PartNumber","Remarks"
"C1,C2,C3,C4,C5,C6,C7,C8,C9,C10,C11,C12,C13,C14,C15,C16,C26","220nF","LibreSolar:C_0603_1608","17","C21120","Samsung Electro-Mechanics","CL10B224KA8NNNC","min. 25V, X7R"
"C17,C18","47µF","LibreSolar:C_1210_3225","2","C525654","Samsung Electro-Mechanics","CL32B476MPJNNNE","min. 10V, X5R"
"C19,C24,C28,C31,C34,C40,C48,C49,C50,C51,C52","100nF","LibreSolar:C_0603_1608","11","C15725","Samsung Electro-Mechanics","CL10B104KC8NNNC","min. 100V, X7R"
"C20","2.2µF","LibreSolar:C_0603_1608","1","C1607","Samsung Electro-Mechanics","CL10A225KP8NNNC","min. 10V, X7R"
"C22,C23","2.2µF","LibreSolar:C_1210_3225","2","C55151","Samsung Electro-Mechanics","CL32B225KCJSNNE","min. 100V, X5R"
"C25","1µF","LibreSolar:C_1206_3216","1","C13832","Samsung Electro-Mechanics","CL31B105KCHNNNE","min. 100V, X5R"
"C27,C29,C32,C33,C35,C38","100pF","LibreSolar:C_0603_1608","6","C296717","Samsung Electro-Mechanics","CL10C101JC8NNNC","100V, C0G/NP0"
"C30","1µF","LibreSolar:C_0603_1608","1","C5673","Samsung Electro-Mechanics","CL10A105KA8NNNC","min. 25V, X5R"
"C46","10µF","LibreSolar:C_0805_2012","1","C17024","Samsung Electro-Mechanics","CL21A106KPFNNNE","min. 10V, X5R"
"C47","1µF","LibreSolar:C_0603_1608","1","C5673","Samsung Electro-Mechanics","CL10A105KA8NNNC","min. 10V, X5R"
"D1,D13","PMEG10010ELRX","LibreSolar:D_SOD-123F","2","C179426","Nexperia","PMEG10010ELRX","Alternative: Nexperia PMEG10030ELPX"
"D2,D5,D10,D15,D16,D20","BAT46W","LibreSolar:D_SOD-123","6","C83152","Diodes Incorporated","BAT46W-7-F","Alternative: MCC BAT46WHE3-TP"
"D3,D4","ESD5B5.0ST1G","LibreSolar:D_SOD-523","2","C93623","onsemi","ESD5B5.0ST1G",""
"D9","VSS8D3M10-M3/I","Diode_SMD:D_SOD-128","1","C3760174","Vishay","VSS8D3M10-M3/H","Alternative: Nexperia PMEG10030ELPX"
"D11","3.6V","LibreSolar:D_SOD-123","1","C66886","onsemi","MMSZ4685T1G",""
"D12","SMCJ70A","LibreSolar:D_SMC","1","C135194","Bourns","SMCJ70A","Alternative: Diodes Inc. SMCJ70A-13-F"
"D14,D17,D21,D24","16V","LibreSolar:D_SOD-123","4","C282317","Diodes Incorporated","MMSZ5246B-7-F","Alternative: Vishay MMSZ5246B-HE3-08"
"D19","5.1V","LibreSolar:D_SOD-323","1","C151348","Diodes Incorporated","BZT52C5V1S-7-F","Vishay BZX384C5V1"
"D22","MURS360","LibreSolar:D_SMC","1","C388245","Diodes Incorporated","MURS360","Alternative: Other MURS360"
"D23","75V","LibreSolar:D_SOD-123","1","C266795","Diodes Incorporated","MMSZ5267BT1G",""
"FID1,FID2","Fiducial","Fiducial:Fiducial_1mm_Mask2mm","2","","","",""
"H1,H2,H3,H4,H5,H6","MountingHole","MountingHole:MountingHole_3.2mm_M3_Pad_TopBottom","6","","","",""
"J2,J6,J9","B4B-PH-SM4","Connector_JST:JST_PH_B4B-PH-SM4-TB_1x04-1MP_P2.00mm_Vertical","3","C160354","JST","B4B-PH-SM4-TB(LF)(SN)","Alternative: Würth 620304124022"
"J3","USB_C_Receptacle_USB2.0","Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal","1","","GCT","USB4105-GF-A",""
"J5","B2B-PH-SM4","Connector_JST:JST_PH_B2B-PH-SM4-TB_1x02-1MP_P2.00mm_Vertical","1","C160352","JST","B2B-PH-SM4-TB(LF)(SN)","Alternative: Würth 620302124022"
"J7","S10B-PH-SM4-TB","Connector_JST:JST_PH_S10B-PH-SM4-TB_1x10-1MP_P2.00mm_Horizontal","1","C265014","JST","S10B-PH-SM4-TB(LF)(SN)","Alternative: Würth 620110131822"
"J8","S9B-PH-SM4-TB","Connector_JST:JST_PH_S9B-PH-SM4-TB_1x09-1MP_P2.00mm_Horizontal","1","C495694","JST","S9B-PH-SM4-TB(LF)(SN)","Alternative: Würth 620109131822"
"L2","22µH","LibreSolar:Bourns_SRN8040TA","1","C92946","Bourns","SRN8040-220M","Alternative: Tayo Yuden NR8040T220M"
"LED1","LED red","LED_SMD:LED_0603_1608Metric","1","C94869","Lite-On","LTST-C190KRKT","red"
"LED2","LED green","LED_SMD:LED_0603_1608Metric","1","C125094","Lite-On","LTST-C190KGKT","green"
"LOGO1","OPEN_HARDWARE","Symbol:OSHW-Logo_5.7x6mm_SilkScreen","1","","","",""
"LOGO2","LIBRE_SOLAR","LibreSolar:LIBRESOLAR_LOGO","1","","","",""
"NT1","NetTie","NetTie:NetTie-2_SMD_Pad0.5mm","1","","","",""
"Q3,Q4,Q7,Q8","IPT012N08N5","Package_TO_SOT_SMD:Infineon_PG-HSOF-8-1_ThermalVias","4","C531199","Infineon","IPT012N08N5","Alternative: Huayi HYG012N08NS1TA"
"Q10","BSS84","LibreSolar:SOT-23","1","C127273","Nexperia","BSS84AK,215","at least -20V"
"Q11","BSS123N","LibreSolar:SOT-23","1","C534594","Infineon","BSS123N H6327",""
"Q12","ZXMP10A17GTA","Package_TO_SOT_SMD:SOT-223-3_TabPin2","1","C32998","Diodes Incorporated","ZXMP10A17GTA","Alternative: IRFL9110TRPBF"
"R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,R13,R14,R15,R16,R17","20","LibreSolar:R_2010_5025","17","C163344","Yageo","RC2010JK-0720RL",""
"R18","100","LibreSolar:R_1206_3216","1","","Yageo","RC1206FR-07100RL",""
"R19,R20,R38,R44","100","LibreSolar:R_0603_1608","4","","Yageo","RC0603FR-07100RL",""
"R22,R23,R46","1k","LibreSolar:R_0603_1608","3","","Yageo","RC0603FR-071KL",""
"R24,R26,R62","1M","LibreSolar:R_0603_1608","3","","Yageo","RC0603FR-071ML",""
"R27,R35,R53,R54","5.1k","LibreSolar:R_0603_1608","4","","Yageo","RC0603FR-075K1L",""
"R28,R65","82k","LibreSolar:R_0603_1608","2","","Yageo","RC0603FR-0782KL",""
"R29,R30,R60,R68","10k","LibreSolar:R_0603_1608","4","","Yageo","RC0603FR-0710KL",""
"R31","35.7k","LibreSolar:R_0603_1608","1","","Yageo","RC0603FR-0735K7L",""
"R32,R33","2.2k","LibreSolar:R_0603_1608","2","","Yageo","RC0603FR-072K2L",""
"R34","52.3k","LibreSolar:R_0603_1608","1","","Yageo","RC0603FR-0752K3L",""
"R36,R55,R63,R66","180","Resistor_SMD:R_2512_6332Metric_Pad1.40x3.35mm_HandSolder","4","","-- mixed values --","CR2512-JW-181ELF",""
"R37","0R","LibreSolar:R_0603_1608","1","","Yageo","RC0603FR-070RL",""
"R39,R52,R59","10M","LibreSolar:R_0603_1608","3","","Yageo","RC0603FR-0710ML",""
"R41,R42,R48,R49,R57","47","LibreSolar:R_0603_1608","5","","Yageo","RC0603FR-0747RL",""
"R45","300µ","LibreSolar:R_Shunt_5931_Kelvin","1","","Vishay","WSLP5931L3000FEA","Alternative: Bourns CSS2H-5930R-L300F"
"R51,R61","68k","LibreSolar:R_0603_1608","2","","Yageo","RC0603FR-0768KL",""
"R58","470","LibreSolar:R_0603_1608","1","","Yageo","RC0603FR-07470RL",""
"RT1,RT2","10k","LibreSolar:R_0603_1608","2","C406719","TDK","NTCG163JF103FT1S",""
"S1,S2","SW_PUSH","Button_Switch_SMD:SW_SPST_TL3305A","2","C2886899","E-Switch","TL3305AF160QG",""
"TP1,TP2,TP3,TP4,TP5,TP6,TP7,TP8,TP9,TP10,TP12,TP13,TP14,TP15","TestPoint","TestPoint:TestPoint_Pad_D1.5mm","14","","","",""
"TP16,TP17,TP18,TP19,TP20,TP21,TP22,TP23,TP24,TP25,TP26,TP27,TP28,TP29,TP30,TP31,TP32","TestPoint","TestPoint:TestPoint_Pad_1.0x1.0mm","17","","","",""
"U3","LMR38010","LibreSolar:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.4x3.1mm_ThermalVias","1","C3192337","Texas Instruments","LMR38010SDDAR","Alternative: LMR38020SDDAR"
"U4","BQ76952","Package_QFP:TQFP-48_7x7mm_P0.5mm","1","C2862742","Texas Instruments","BQ76952PFBR",""
"U5","ESP32-C3-MINI-1","Espressif:ESP32-C3-MINI-1","1","C2838502","Espressif Systems","ESP32-C3-MINI-1-N4",""
18 changes: 9 additions & 9 deletions build/bms-c1_ibom.html
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