2 layers203 × 26.6 mm
2 layers118.4 × 104.3 mm
Cosi pwr
MatthewBeddows/COSI-Electronics- Size
- 118.4 × 104.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 54
- Nets
- 71
- Pads
- 179
- Tracks, vias
- 422, 18
- Pours
- 24
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 9 Oct 2024
- Updated
- 12 Sep 2025
Overview
Cosi pwr is an open-source printed circuit board by MatthewBeddows, from the MatthewBeddows/COSI-Electronics repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board of 118.4 × 104.3 mm with 54 parts on 71 nets, routed with 422 tracks and 18 vias.
Its parts include 20 resistors, 10 ICs, 6 capacitors, 6 crystals and 2 diodes.
README
README.mdCOSI-Mechanical-System
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 10k | Resistors_SMD:R_0805_HandSoldering | R2, R6, R7, R8, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22 |
| 8 | N-CHANNEL-MOSFET-BSS138 | TO_SOT_Packages_SMD:SOT-23_Handsoldering | U3, U5, U6, U7, U8, U9, U10, U11 |
| 4 | 1k | Resistors_SMD:R_0805_HandSoldering | R1, R5, R9, R10 |
| 3 | ~ | cosi_pwr:AK500_2 | X4, X5, X6 |
| 3 | ~ | cosi_pwr:AK500_3 | X1, X2, X3 |
| 2 | 0.1u | Capacitors_SMD:C_0805_HandSoldering | C3, C7 |
| 2 | 100u | cosi_pwr:CPOL-RADIAL-100UF-25V | C1, C5 |
| 2 | 1N4004 | cosi_pwr:DO41-10 | D1, D2 |
| 2 | 4.7u | Capacitors_SMD:C_0805_HandSoldering | C2, C6 |
| 2 | ~ | cosi_pwr:1X20 | IO1, IO2 |
| 2 | ~ | cosi_pwr:1X06 | JP2, JP3 |
| 1 | 10k | Resistors_SMD:R_0603_HandSoldering | R11 |
| 1 | DCDC_SIM1_DIP8 | cosi_pwr:DCDC_SIM1_DIP8 | U2 |
| 1 | G5SB | cosi_pwr:G5SB | K2 |
| 1 | IRM_15_20 | cosi_pwr:IRM_15_20 | U1 |
| 1 | MESC-120M-01 | cosi_pwr:MESC-120M-01 | L1 |
| 1 | PT371512 | cosi_pwr:PT-3 | K1 |
| 1 | ~ | cosi_pwr:2X02 | JP1 |
The 52 most common of 54 parts.
Questions
How big is the Cosi pwr PCB?
It measures 118.4 × 104.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cosi pwr use?
54 parts. 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 Cosi pwr KiCad files?
From the MatthewBeddows/COSI-Electronics repository on GitHub, at the commit this page was made from: the board is Power management board/cosi_pwr.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cosi pwr design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 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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