2 layers69.4 × 89.9 mm
4 layers63.5 × 165.4 mm
- Size
- 63.5 × 165.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 115
- Nets
- 125
- Pads
- 415
- Tracks, vias
- 767, 189
- Pours
- 20
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Jun 2026
- Updated
- 6 Jun 2026
Overview
PCB 2 is an open-source printed circuit board by nathaniel-krueger, from the nathaniel-krueger/Capstone_PCB_2 repository on GitHub. It is a 4-layer board of 63.5 × 165.4 mm with 115 parts on 125 nets, routed with 767 tracks and 189 vias.
It is built around the ATSAMD51J19A-AU, AT25SF128A-SHB-T and OPT3004DTSR, with the TUSB320LAIRWBR, DS2782E+ and AO3400A among its other parts. Its parts include 33 capacitors, 33 resistors, 9 ICs, 8 diodes and 4 switches. It belongs with the SAM D and SAM boards of this library.
Main components
9
ATSAMD51J19A-AU
TQFP-64-40℃~+85℃ 1.71V~3.63V 120MHz 12bit 12bit 192KB 32 Bit 51 512KB ARM Cortex-M4F Built-in FLASH TQFP-64(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AT25SF128A-SHB-T
SOIC-8-40℃~+85℃ 100,000 cycles 128Mbit 133MHz 13uA 2.7V~3.6V 250ms@(64KB) 6ms SPI SOP-8-208mil NOR FLASH ROHSRenesas ElectronicsNOR FLASH
OPT3004DTSR
SOT-5x3(DTS)-8-40℃~+85℃ 0.6mm 1.6V~3.6V 1.9mm 2.1mm 83klx I2C Light Intensity Low power/sleep mode、Spectral correction/filtering、Interrupt/event trigger、Automatic gain control SOT-5x3(DTS)-8 Ambient Light Sensors ROHSTexas InstrumentsAmbient Light Sensors
TUSB320LAIRWBR
X2-QFN-12(1.6x1.6)-40℃~+85℃ 2.7V~5V 3A 70uA I2C Not supported Not supported Programmable charging current X2-QFN-12(1.6x1.6) USB Converters ROHSTexas InstrumentsBattery Management
DS2782E+
TSSOP-8-40℃~+85℃ 1 1uA 2.5V~4.5V I2C Lithium Battery Support TSSOP-8 Battery Management ROHSMaxim Integrated (Analog Devices)Battery Management ICs
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
SMF5V0A-E3-08
SMF(DO-219AB)1 1.12nF 1kW@8/20us 21.7A@10/1000us 5V 5uA 7.1V 9.2V ESD IEC 61000-4-2 Unidirectional SMF(DO-219AB) ESD and Surge Protection (TVS/ESD) ROHSVishay IntertechnologyESD And Surge Protection (TVS/ESD)
1206L035YR
1206-40℃~+85℃ 1.2Ω 100A 100ms 300mΩ 350mA 600mW 6V 750mA 1206 Resettable Fuses ROHSLittelfuseResettable FusesSP0502BAHTG
SOT-23-40℃~+125℃ 100nA 2 30pF 5.5V 8.5V IEC 61000-4-2 TVS Unidirectional SOT-23 ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
Parts
115| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1µF | Capacitor_SMD:C_0603_1608Metric | C22, C23, C24, C25, C26, C27, C29, C30, C31, C32, C33 |
| 10 | 10kΩ | Resistor_SMD:R_0603_1608Metric | R2, R3, R10, R19, R22, R26, R27, R31, R32, R33 |
| 10 | 10µF | Capacitor_SMD:C_0805_2012Metric | C3, C6, C7, C8, C9, C10, C11, C18, C19, C20 |
| 10 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10 |
| 5 | 0.1μF | Capacitor_SMD:C_0603_1608Metric | C1, C14, C15, C16, C21 |
| 4 | 270Ω | Resistor_SMD:R_0603_1608Metric | R6, R13, R14, R24 |
| 3 | SW_Push | Button_Switch_THT:SW_TH_Tactile_Omron_B3F-100x | SW2, SW3, SW4 |
| 2 | 100kΩ | Resistor_SMD:R_0603_1608Metric | R18, R29 |
| 2 | 1kΩ | Resistor_SMD:R_0603_1608Metric | R16, R21 |
| 2 | 1µH | Inductor_SMD:L_1008_2520Metric | L2, L3 |
| 2 | 330Ω | Resistor_SMD:R_0603_1608Metric | R20, R28 |
| 2 | 4.7µF | Capacitor_SMD:C_0603_1608Metric | C5, C28 |
| 2 | 47µF | Capacitor_SMD:C_1210_3225Metric | C12, C13 |
| 2 | 510Ω | Resistor_SMD:R_0603_1608Metric | R15, R25 |
| 2 | AO3400A | Package_TO_SOT_SMD:SOT-23-3 | Q1, Q2 |
| 2 | G_LED | LED_SMD:LED_0805_2012Metric | D4, D5 |
| 2 | SMF5V0A-E3-08 | Diode_SMD:D_SMF | D2, D6 |
| 1 | 0.02Ω | Resistor_SMD:R_0805_2012Metric | RSNS1 |
| 1 | 100Ω | Resistor_SMD:R_0603_1608Metric | R17 |
| 1 | 10µH | Inductor_SMD:L_1210_3225Metric | L4 |
| 1 | 10μF | Capacitor_SMD:C_0805_2012Metric | C17 |
| 1 | 11.8kΩ | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 1206L035 | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 160Ω | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 169Ω | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 1µF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 1µH | IHLP2525CZER1R0M11:IHLP2525CZER1R0M11 | L1 |
| 1 | 220Ω | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | 22Ω | Resistor_SMD:R_0603_1608Metric | R30 |
| 1 | 30.1kΩ | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 470Ω | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 47nF | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 5.23kΩ | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 56kΩ | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 88.7kΩ | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 909kΩ | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | AT25SF128A-SHB-T | AT25SF128A-SHB-T:AT25SF128A-SHB-T | U8 |
| 1 | ATSAMD51J19A-AU | ATSAMD51J19A_AU:ATSAMD51J19A-AU | U7 |
| 1 | BQ25616RTWT | BQ25616:BQ25616 | U2 |
| 1 | Battery | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | BT1 |
| 1 | Conn_01x02 | Connector_JST:JST_XH_S2B-XH-A_1x02_P2.50mm_Horizontal | J_Laser1 |
| 1 | Conn_01x07 | Connector_Molex:Molex_PicoBlade_53048-0710_1x07_P1.25mm_Horizontal | J_TF1 |
| 1 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J_DEBUG1 |
| 1 | Conn_01x20 | 522712079:0522712079 | J_LCD1 |
| 1 | DBZ3 | TPD2E009:TPD2E009 | D1 |
| 1 | DS2782E+ | DS2782E_:DS2782E_ | U5 |
| 1 | LOGO | UWM Logo:UWM Logo | G*** |
| 1 | LSM6DSOXTR | LSM6DSOXTR:LSM6DSOXTR | U9 |
| 1 | OPT3004DTSR | OPT3004:OPT3004_SOT-5X3 | U6 |
| 1 | RGB_LED | XZM2CRKM2DGFBB45SCCB:XZM2CRKM2DGFBB45SCCB | D8 |
| 1 | R_LED | AA3528SURSK:AA3528SURSK | D3 |
| 1 | SP0502BAHTG | Package_TO_SOT_SMD:SOT-23-3 | D7 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_TL3342 | SW1 |
| 1 | SW_SPST | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J_SW1 |
| 1 | TPS61023DRLT (5V) | TPS61023:TPS61023 | U4 |
| 1 | TPS631000DRLR (3.3V) | TPS63100:TPS631000 | U3 |
| 1 | TUSB320LAIRWBR | TUSB320LAIRWBR:TUSB320LAIRWBR | U1 |
| 1 | Thermistor | Connector_JST:JST_XH_S2B-XH-A_1x02_P2.50mm_Horizontal | TH1 |
| 1 | USB_C_Receptacle_USB2.0_16P | USB4105_GF_A:USB4105-GF-A | J1 |
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Questions
How big is the PCB 2 PCB?
It measures 63.5 × 165.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the PCB 2 use?
115 parts, built around the ATSAMD51J19A-AU, AT25SF128A-SHB-T, OPT3004DTSR and TUSB320LAIRWBR. 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 PCB 2 KiCad files?
From the nathaniel-krueger/Capstone_PCB_2 repository on GitHub, at the commit this page was made from: the board is PCB 2.kicad_pcb and its schematic PCB 2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PCB 2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask nathaniel-krueger before reusing the design.