4 layers60 × 100 mm
2 layers88 × 100 mm
Mainboard
midarubiccube/mainboard- Size
- 88 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 57
- Nets
- 87
- Pads
- 271
- Tracks, vias
- 444, 157
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 14 Feb 2024
- Updated
- 16 Nov 2024
Overview
Mainboard is an open-source printed circuit board by midarubiccube, from the midarubiccube/mainboard repository on GitHub. It is a 2-layer board of 88 × 100 mm with 57 parts on 87 nets, routed with 444 tracks and 157 vias.
It is built around the CH221K, MCP251863-E/SS and MMBT3906, with the RJ45, MMBT3904 and SSM3J332R,LF among its other parts. Its parts include 15 resistors, 12 capacitors, 7 connectors, 5 ICs and 5 switches. It belongs with the computers and single-board computers boards of this library.
Main components
6
CH221K
SOT-23-6-40℃~+105℃ 100W 5V、9V、12V、15V、20V PD 3.0 Power Receiver Controller SOT-23-6 USB PD ROHSWCH (Nanjing Qinheng Microelectronics)USB PD
MCP251863-E/SS
SSOP-28-208mil-40℃~+150℃ 2.7V~5.5V 20mA 5Mbps CAN FD Controller SPI SSOP-28-208mil CAN Controllers ROHSMicrochip TechnologyCAN Controllers
MMBT3906
SOT-23-55℃~+150℃ 1 PNP 100 100nA 200mA 200mW 300MHz 300mV 40V 5V PNP SOT-23 Bipolar (BJT) ROHSTWGMCBipolar (BJT)
RJ45
TH-12PTH-12P SMT ROHSJLCPCB AssemblyUncategorisedMMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
SSM3J332R,LF
SOT-23F1 P-Channel 1.2V 144mΩ@1.8V 1W 30V 560pF 65pF 6A 8.2nC@4.5V 80pF P-Channel SOT-23F MOSFETs ROHSToshibaMOSFETs
Parts
57| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1μF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C6, C7, C11 |
| 4 | M3 | screw:M3 | S1, S2, S3, S4 |
| 4 | MountingHole_2.7mm_M2.5 | MountingHole:MountingHole_2.7mm_M2.5 | MH1, MH2, MH3, MH4 |
| 3 | , , | ||
| 3 | 120Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12, R13, R14 |
| 2 | 10KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10, R11 |
| 2 | 1kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R7 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9 |
| 2 | 5.1kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3 |
| 2 | MMBT3906 | Package_TO_SOT_SMD:SOT-23 | Q2, Q4 |
| 2 | RJ45 | akiRJ45:7810-8P8C | J3, J4 |
| 1 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 1000μF | Capacitor_THT:C_Radial_D10.0mm_H12.5mm_P5.00mm | C1 |
| 1 | 100nF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 10µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12 |
| 1 | 10Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | 10μF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 120Ω | Resistor_SMD:R_0805_2012Metric | R15 |
| 1 | 1μF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 20KΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 330Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 1 | 4700pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10 |
| 1 | 47kΩ | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 4MHz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | CH221K | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | Conn_01x02_Socket | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Conn_01x03_Socket | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | Fan | pihat_cooling:fan_30mm | M1 |
| 1 | GPIO | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | J2 |
| 1 | IM920sl | interplan:IM920s | U6 |
| 1 | MCP251863 | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U2 |
| 1 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | MSP2807 | MSP2807:MSP2807 | U4 |
| 1 | NJM2391 | Package_TO_SOT_SMD:TO-252-2 | U3 |
| 1 | SSM3J332R | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | SW_DIP_x02 | Button_Switch_THT:SW_DIP_SPSTx02_Slide_9.78x7.26mm_W7.62mm_P2.54mm | SW1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J1 |
| 1 | ~ | okL:OKLT6W12NC | P1 |
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Questions
How big is the Mainboard PCB?
It measures 88 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mainboard use?
57 parts, built around the CH221K, MCP251863-E/SS, MMBT3906 and RJ45. 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 Mainboard KiCad files?
From the midarubiccube/mainboard repository on GitHub, at the commit this page was made from: the board is mainboard.kicad_pcb and its schematic canfd.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mainboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask midarubiccube before reusing the design.