2 layers50 × 20 mm
2 layers45 × 40 mm
Current Source v2
davidphamthecat/PCBs- Size
- 45 × 40 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 22
- Pads
- 114
- Tracks, vias
- 141, 22
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Sep 2026
- Updated
- 7 Sep 2026
Overview
Current Source v2 is an open-source printed circuit board by davidphamthecat, from the davidphamthecat/PCBs repository on GitHub. It is a 2-layer board of 45 × 40 mm with 36 parts on 22 nets, routed with 141 tracks and 22 vias.
It is built around the AL8860MP and MT3608. Its parts include 8 capacitors, 6 resistors, 5 connectors, 4 ICs and 4 diodes.
Main components
2
AL8860MP
MSOP-8-EP-40℃~+85℃ 1 1.5A 1MHz 4.5V~40V 5% Analog、PWM Buck Built-in DC-DC Short Circuit Protection、Over-Temperature Protection (OTP)、LED open-circuit protection、Built-in soft-start MSOP-8-EP LED Drivers ROHSDiodes IncorporatedLED Drivers
MT3608
SOT-23-6-40℃~+85℃ 1 1.2MHz 100uA、1.6mA 2A 2V~24V Adjustable Boost Boost Built-in No SOT-23-6 DC-DC Converters ROHS西安航天民芯DC-DC Converters
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 40V 1A | PCM_Diode_SMD_AKL:D_SMA | D1, D2, D3, D4 |
| 4 | MountingHole_M3 | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad_TopBottom | H1, H2, H3, H4 |
| 3 | 10u | Capacitor_SMD:C_0805_2012Metric | C3, C5, C7 |
| 3 | 1u | Capacitor_SMD:C_0805_2012Metric | C4, C6, C8 |
| 3 | 47u | 46473C:46473C | L2, L3, L4 |
| 3 | AL8860MP | Package_SO:MSOP-8-1EP_3x3mm_P0.65mm_EP1.5x1.8mm | U2, U3, U4 |
| 2 | 0.15 | Resistor_SMD:R_1206_3216Metric | R4, R6 |
| 2 | 22u | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 1 | 0.3 | Resistor_SMD:R_1206_3216Metric | R5 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 2.5A | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 22u | MSS7341-223MLD:IND_MSS7341-223MLD | L1 |
| 1 | 390k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | LED1 (395) | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J3 |
| 1 | LED2 (340) | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J4 |
| 1 | LED3 (310) | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J5 |
| 1 | MT3608 | MT3608:SOT95P280X145-6N | U1 |
| 1 | Signals | Connector_PinHeader_1.00mm:PinHeader_1x03_P1.00mm_Vertical | J2 |
| 1 | XT30 | Connector_AMASS:AMASS_XT30U-M_1x02_P5.0mm_Vertical | J1 |
Questions
How big is the Current Source v2 PCB?
It measures 45 × 40 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Current Source v2 use?
36 parts, built around the AL8860MP and MT3608. 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 Current Source v2 KiCad files?
From the davidphamthecat/PCBs repository on GitHub, at the commit this page was made from: the board is URECA/Current Source v2/Current Source v2.kicad_pcb and its schematic Mecatron 2027/6S Battery Protector/6S Battery Protector.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Current Source v2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask davidphamthecat before reusing the design.
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