4 layers45 × 43.6 mm
4 layers36.3 × 36.3 mm
SwitchbloxPicoBaseBoardRevB
botblox/SwitchCore-Baseboard-DesignsThe baseboard designs for SwitchCore
- Size
- 36.3 × 36.3 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 57
- Pads
- 135
- Tracks, vias
- 582, 79
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 26 Nov 2025
- Updated
- 26 Nov 2025
Overview
SwitchbloxPicoBaseBoardRevB is an open-source printed circuit board by botblox, from the botblox/SwitchCore-Baseboard-Designs repository on GitHub, published under the MIT licence. It is a 4-layer board of 36.3 × 36.3 mm with 24 parts on 57 nets, routed with 582 tracks and 79 vias.
It is built around the 1.25T-4A, 1.25T-7A and DF40C-60DP-0.4V(51), with the SI2337DS, SMF54CA and TC2030-IDC-NL among its other parts. Its parts include 12 connectors, 3 resistors, 2 diodes and 1 transistor.
Main components
6
1.25T-4A
插件,P=1.25mm-25℃~+85℃ 1 1.25mm 125V 1A 1x4P 3.2mm 4 4.8mm 4P 6.85mm Beige Brass Through Hole 插件,P=1.25mm Wire To Board Connector ROHSCAXWire To Board Connector
1.25T-7A
插件,P=1.25mm-25℃~+85℃ 1 1.25mm 1x7P 250V 3A 7 7P Beige Brass PBT PicoBlade(MX 1.25) Through Hole Tin UL94V-0 插件,P=1.25mm Wire To Board Connector ROHSBOOMELEWire To Board Connector
DF40C-60DP-0.4V(51)
SMD,P=0.4mm-35℃~+85℃ 0.4mm 2 300mA 60P Gold Slot Type Butting Surface Mount,Vertical SMD,P=0.4mm Board-to-Board and Backplane Connector ROHSHirose ElectricBoard-To-Board And Backplane Connector
SI2337DS
SOT-23-50℃~+150℃ 1 P-Channel 17nC@10V 2.2A 25pF 270mΩ@10V 40pF 4V 500pF 760mW、2.5W 80V P-Channel ±20V SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs
SMF54CA
SOD-123FL-65℃~+150℃ 1.1A@10/1000us 1uA 200W@10/1000us 54V 66.3V 87.1V Bidirectional IEC 61000-4-2、IEC 61000-4-4 TVS SOD-123FL ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
TC2030-IDC-NL
UncategorisedTag Connect
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1.25T-4A | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J2, J3, J4, J5, J6, J7, J8, J9, J10 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_ISO14580_Pad | H3, H4, H5, H6 |
| 2 | MountingHole_Pad | Kpk:MountingHole_2.2mm_M2_ISO7380_Pad_3.3mm | H1, H2 |
| 1 | 1.25T-7A | Connector_Molex:Molex_PicoBlade_53047-0710_1x07_P1.25mm_Vertical | J11 |
| 1 | 12V | Diode_SMD:D_SOD-323 | D1 |
| 1 | 56K | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | DF40C-60DP-0.4V(51) | Kpk:Hirose_DF40C-60DP-0.4V(51) | J1 |
| 1 | DNP | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | DNP | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | SI2337DS | Kpk:SOT-23 | Q1 |
| 1 | SMF54CA | Kpk:D_SOD-123FL | D2 |
| 1 | TC2030-IDC-NL | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J12 |
Questions
How big is the SwitchbloxPicoBaseBoardRevB PCB?
It measures 36.3 × 36.3 mm and has 4 copper layers, 1.6 mm thick.
What parts does the SwitchbloxPicoBaseBoardRevB use?
24 parts, built around the 1.25T-4A, 1.25T-7A, DF40C-60DP-0.4V(51) and SI2337DS. 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 SwitchbloxPicoBaseBoardRevB KiCad files?
From the botblox/SwitchCore-Baseboard-Designs repository on GitHub, at the commit this page was made from: the board is SwitchCore BaseBoard Kicad Files/SwitchbloxPicoBaseBoardRevB.kicad_pcb and its schematic SwitchCore BaseBoard Kicad Files/SwitchbloxPicoBaseBoardRevB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SwitchbloxPicoBaseBoardRevB design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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