

12V DualPowerSupplyV2
A USB-C Powered 12V Dual Power Supply for Small Eurorack Systems
- Size
- 28 × 112 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 14
- Pads
- 47
- Tracks, vias
- 44, 3
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Sep 2025
- Updated
- 29 Sep 2025
Overview
12V DualPowerSupplyV2 is an open-source printed circuit board by loxien, from the loxien/POW12 repository on GitHub. It is a 2-layer board of 28 × 112 mm with 20 parts on 14 nets, routed with 44 tracks and 3 vias.
It is built around the DKM10E-12, RUEF300 and SMBJ5.0A. Its parts include 5 resistors, 4 diodes, 3 connectors, 2 capacitors and 1 fuse. It belongs with the audio and music and power boards of this library.
Main components
3DKM10E-12
DIP,25.4x25.4mm1.5kV 10W 12V 2 4.7V~9V 416mA 87% DIP,25.4x25.4mm Power Module/Power Supply ROHSMWIsolated Power ModulesRUEF300
Through Hole-40℃~+85℃ 10.8s 100A 20mΩ 2W 30V 3A 6A 80mΩ Plugin,P=5.1mm Resettable Fuses ROHSLittelfuseResettable FusesSMBJ5.0A
DO-214AA(SMB)-65℃~+150℃ 5V 600W@10/1000us 65.3A@10/1000us 7V 800uA 9.2V TVS Unidirectional DO-214AA(SMB) ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)
README
README.md
PΦW12
A 12V Dual Power Supply for Small Eurorack Systems powered by USB-C.
Documentation
Still work in progress ...
License
This project is made available under a CC-BY-NC-SA-3.0 license.
If you want to make a PCB for your own use, go ahead. Please do not make and sell these in bulk.
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H5, H6, H7, H8 |
| 3 | LED | LED_THT:LED_D5.0mm | D1, D2, D4 |
| 2 | 5.1k 1% | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | 510 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5 |
| 1 | 100u | Capacitor_THT:C_Radial_D6.3mm_H7.0mm_P2.50mm | C2 |
| 1 | 10u | Capacitor_THT:C_Radial_D5.0mm_H11.0mm_P2.00mm | C1 |
| 1 | 150 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 1548128 | import:1548128 | J1 |
| 1 | 1548129 | import:1548129 | J2 |
| 1 | DKM10E-12 | import:DKM10E12 | PS1 |
| 1 | RUEF300 | import:RUEF300 | F1 |
| 1 | SMBJ5.0A | import:SMBJ5.0A | D3 |
| 1 | UJC-V-G-SMT-P6-TR | import:UJCVGSMTP6TR | J4 |
Questions
How big is the 12V DualPowerSupplyV2 PCB?
It measures 28 × 112 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 12V DualPowerSupplyV2 use?
20 parts, built around the DKM10E-12, RUEF300 and SMBJ5.0A. 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 12V DualPowerSupplyV2 KiCad files?
From the loxien/POW12 repository on GitHub, at the commit this page was made from: the board is KiCad_files/12V_DualPowerSupplyV2.kicad_pcb and its schematic KiCad_files/12V_DualPowerSupplyV2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 12V DualPowerSupplyV2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask loxien before reusing the design.
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