

Stencil
- Size
- 44 × 70.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 69
- Nets
- 71
- Pads
- 220
- Tracks, vias
- 440, 43
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Jul 2026
- Updated
- 5 Jul 2026
Overview
Stencil is an open-source printed circuit board by fujiy, from the fujiy/Home repository on GitHub. It is a 2-layer board of 44 × 70.5 mm with 69 parts on 71 nets, routed with 440 tracks and 43 vias.
It is built around the HV9961LG-G, TLP291-4 and ESP32-H2-MINI-1U. Its parts include 21 connectors, 15 diodes, 10 resistors, 8 capacitors and 6 ICs. It belongs with the ESP32 and RISC-V boards of this library.
Main components
3HV9961LG-G
SOIC-8-40℃~+125℃ 1 3% 8V~450V Buck DC-DC External PWM Short-Circuit Protection SOIC-8 LED Drivers ROHSMicrochip TechnologyLED DriversTLP291-4
SOIC16Quad Channel Optocoupler, Phototransistor OutputToshibaUncategorisedESP32-H2-MINI-1U
SMD,12.5X13.2mmSMD,12.5x13.2mm New Arrivals ROHSEspressif SystemsUncategorised
Parts
69| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | LED | Library:S1S0-3030 | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 8 | Conn_01x01_Pin | TestPoint:TestPoint_Pad_3.0x3.0mm | J1, J2, J3, J4, J5, J6, J7, J8 |
| 7 | Conn_01x01_Pin | Connector_Wire:SolderWirePad_1x01_SMD_2x4mm | J7, J8, J9, J10, J11, J12, J13 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C4, C6, C8 |
| 2 | 1.5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R10 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R7 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R6 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R3 |
| 2 | Conn_01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J1, J6 |
| 2 | Conn_01x02_Pin | Connector_Wire:SolderWire-1sqmm_1x02_P5.4mm_D1.4mm_OD2.7mm | J3, J4 |
| 2 | D | Diode_SMD:D_SOD-123 | D2, D3 |
| 2 | HV9961LG-G | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U4 |
| 2 | Q_NMOS_GDS | Package_TO_SOT_SMD:TO-252-2 | Q1, Q2 |
| 2 | R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 2 | TLP291 | Package_SO:SOIC-4_4.55x2.6mm_P1.27mm | U1, U3 |
| 1 | 10uF | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C7 |
| 1 | 1mH | Inductor_SMD:L_Neosid_SM-NE127_HandSoldering | L3 |
| 1 | 1mH0.7A | Inductor_SMD:L_Neosid_SM-NE127_HandSoldering | L2 |
| 1 | 200V 22uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C3 |
| 1 | 250V0.22uF | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C1 |
| 1 | 50V10uF | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C5 |
| 1 | 800V0.8A | ESP32HomeLibrary:Diode_Bridge_B1005S | D1 |
| 1 | Conn_01x02_Pin | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J5 |
| 1 | ESP32-H2-MINI-1 | RF_Module:ESP32-C6-MINI-1 | U5 |
| 1 | Fuse | Fuse:Fuseholder_Littelfuse_Nano2_157x | F1 |
| 1 | TLV70033_SOT23-5 | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | Thermistor_NTC | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | TH1 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Molex-105017-0001 | J2 |
| 1 | Varistor | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | RV1 |
The 67 most common of 69 parts.
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Questions
How big is the Stencil PCB?
It measures 44 × 70.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Stencil use?
69 parts, built around the HV9961LG-G, TLP291-4 and ESP32-H2-MINI-1U. 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 Stencil KiCad files?
From the fujiy/Home repository on GitHub, at the commit this page was made from: the board is ACLamp/stencil/stencil.kicad_pcb and its schematic ACLamp/LEDboard/LEDboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Stencil design in my own project?
Its repository states no licence, so its author keeps all rights: ask fujiy before reusing the design.