2 layers296.5 × 240.8 mm
PCB PANELIZED
rajeev2705/PROJECTS
Welcome to my PCB projects repository! This space is dedicated to documenting my journey in designing, creating, and improving printed circuit boards (PCBs).
280 parts
2 layers67.2 × 45.4 mm
Dev board
rajeev2705/PROJECTSWelcome to my PCB projects repository! This space is dedicated to documenting my journey in designing, creating, and improving printed circuit boards (PCBs). Here, I share various PCB projects, including schematics, layouts, bill of materials (BOM), and relevant documentation.
- Size
- 67.2 × 45.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 120
- Nets
- 128
- Pads
- 431
- Tracks, vias
- 950, 83
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 Jun 2024
- Updated
- 1 May 2026
Overview
Dev board is an open-source printed circuit board by rajeev2705, from the rajeev2705/PROJECTS repository on GitHub. It is a 2-layer board of 67.2 × 45.4 mm with 120 parts on 128 nets, routed with 950 tracks and 83 vias.
It is built around the MT3608, TPS563208DDCR-MS and TP4056-42-ESOP8, with the ULN2003, USBLC6-2SC6 and W5500 among its other parts. Its parts include 42 resistors, 39 capacitors, 8 ICs, 6 connectors and 2 diodes. It belongs with the microcontroller boards boards and the ESP32 boards of this library.
Main components
11
MT3608
SOT-23-6-40℃~+85℃ 1 1.2MHz 100uA、1.6mA 2A 2V~24V Adjustable Boost Boost Built-in No SOT-23-6 DC-DC Converters ROHS西安航天民芯DC-DC ConvertersTPS563208DDCR-MS
SOT-23-6-40℃~+125℃ 1 3.5A 3.5V~18V 300uA 450kHz~750kHz Adjustable Buck Built-in Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting Step-down type Yes SOT-23-6 DC-DC Converters ROHSMSKSEMIDC-DC Converters
TP4056-42-ESOP8
ESOP-8-40℃~+85℃ 1 1A 2uA 4.2V 4V~8V Charging IC Lithium Battery Support ESOP-8 Battery Management ROHSTOPPOWERBattery Management
ULN2003
SOP-161.1V@250uA,100mA 25pF 2V 30V 500mA 50uA 50uA Seven channels SOP-16 Darlington Transistor Arrays ROHSBLDarlington Transistor ArraysUSBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
W5500
LQFP-48_7x7-40℃~+85℃ 10BASE-T、100BASE-TX 3.3V 32KB SPI SPI Wake-up function、Programmable LED indication、Low-power mode Yes LQFP-48(7x7) Ethernet Controllers ROHSWIZNETEthernet Controllers
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
TS-1088-AR02016
SMD,4x3mm-30℃~+80℃ 1.6N 100,000 cycles 12V 2mm 3.9mm 3mm 50mA Black Round Button SMD(SMT) Tab SPST Surface Mount,Vertical Without Bracket SMD,4x3mm Tactile Switches ROHSXUNPUTactile Switches
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
B4B-PH-K-S-GW
插件,P=2mm-25℃~+85℃ 1 100V 1x4P 2A 2mm 4 4.5mm 4P 6mm 9.9mm Brass K Pin PA66 PH Through Hole Tin UL94V-0 White 插件,P=2mm Wire To Board Connector ROHSJSTWire To Board Connector
TYPE-C-31-M-12
SMD-30℃~+80℃ 1 10,000 cycles 16P 20V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
Parts
120| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R3, R8, R9, R10, R13, R14, R15, R16, R17, R18, R19, R36, R48 |
| 13 | 0.1uf | Capacitor_SMD:C_0603_1608Metric | C2, C6, C7, C11, C12, C13, C14, C15, C29, C30, C32, C35, C39 |
| 7 | 1uf | Capacitor_SMD:C_0603_1608Metric | C16, C17, C27, C31, C33, C34, C36 |
| 6 | 10uf | Capacitor_SMD:C_0603_1608Metric | C1, C5, C8, C28, C37, C38 |
| 5 | 22R | Resistor_SMD:R_0603_1608Metric | R33, R35, R40, R41, R42 |
| 4 | 33 | Resistor_SMD:R_0603_1608Metric | R22, R23, R24, R25 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 22uf | Capacitor_SMD:C_0603_1608Metric | C40, C41, C42 |
| 3 | 5.1K | Resistor_SMD:R_0603_1608Metric | R1, R6, R38 |
| 2 | 100R | Resistor_SMD:R_0603_1608Metric | R30, R31 |
| 2 | 10nf | Capacitor_SMD:C_0603_1608Metric | C10, C20 |
| 2 | 18pf | Capacitor_SMD:C_0603_1608Metric | C3, C4 |
| 2 | 330 | Resistor_SMD:R_0603_1608Metric | R21, R26 |
| 2 | 49.1 | Resistor_SMD:R_0603_1608Metric | R28, R32 |
| 2 | 49.9 | Resistor_SMD:R_0603_1608Metric | R27, R29 |
| 2 | 6.8nf | Capacitor_SMD:C_0603_1608Metric | C21, C22 |
| 2 | Ferrite Bead 0603 600Ω @100MHz ≥1A | Inductor_SMD:L_0603_1608Metric | FB2, FB3 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | SS14 | Diode_SMD:D_SMA | D3, D4 |
| 2 | TS-1088-AR02016 | Button_Switch_SMD:SW_SPST_B3U-1000P | BOOT1, RESET1 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | RS1, RS2 |
| 1 | 0R | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 10 | Resistor_SMD:R_0603_1608Metric | R34 |
| 1 | 10uf 16V | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C18 |
| 1 | 12.4k | Resistor_SMD:R_0603_1608Metric | R20 |
| 1 | 15k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 1nf 2KV | Capacitor_SMD:C_1206_3216Metric | C19 |
| 1 | 2.2uH 15mOhm | User ILib:IND_SPM6530T-2R2M | L2 |
| 1 | 22nf | Capacitor_SMD:C_0603_1608Metric | C24 |
| 1 | 22uH | Inductor_SMD:L_10.4x10.4_H4.8 | L1 |
| 1 | 25MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 33.2k | Resistor_SMD:R_0603_1608Metric | R47 |
| 1 | 3k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 4.7uf | Capacitor_SMD:C_0603_1608Metric | C9 |
| 1 | 7 Segment | Connector_JST:JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical | J3 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | B4B-PH-K-S | Connector_JST:JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical | J6 |
| 1 | BAT+ | TestPoint:TestPoint_Pad_D1.5mm | B+ |
| 1 | BAT- | TestPoint:TestPoint_Pad_D1.5mm | GND |
| 1 | ESP32-S3-WROOM-2 | RF_Module:ESP32-S3-WROOM-2 | U4 |
| 1 | FerriteBead_Small | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.5mm | GND |
| 1 | LIMIT_SWITCH | TestPoint:TestPoint_Pad_D1.5mm | LM-SW |
| 1 | MAX98357A | Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U7 |
| 1 | MIC | Connector_JST:JST_EH_B5B-EH-A_1x05_P2.50mm_Vertical | J5 |
| 1 | MT3608 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | Potentiometer | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J7 |
| 1 | RJ45_Hanrun_HR911105A_Horizontal | Connector_RJ:RJ45_Hanrun_HR911105A_Horizontal | J2 |
| 1 | SpeakerN | TestPoint:TestPoint_Pad_D1.5mm | TP6 |
| 1 | SpeakerP | TestPoint:TestPoint_Pad_D1.5mm | TP5 |
| 1 | TP4056-42-ESOP8 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U1 |
| 1 | TPS563208DDCR | User ILib:SOT95P280X110-6N | U8 |
| 1 | TYPE-C-31-M-12 | User ILib:HRO_TYPE-C-31-M-12 | J1 |
| 1 | ULN2003 | Package_SO:SOIC-16W_5.3x10.2mm_P1.27mm | U6 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | W5500 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U3 |
Questions
How big is the Dev board PCB?
It measures 67.2 × 45.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dev board use?
120 parts, built around the MT3608, TPS563208DDCR-MS, TP4056-42-ESOP8 and ULN2003. 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 Dev board KiCad files?
From the rajeev2705/PROJECTS repository on GitHub, at the commit this page was made from: the board is Kicad Projects/Atomic 01 PCB SMD/dev-board.kicad_pcb and its schematic Kicad Projects/3.3V DC Buck Boost Converter/3.3V Buck Boost Converter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dev board design in my own project?
Its repository states no licence, so its author keeps all rights: ask rajeev2705 before reusing the design.
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