2 layers23 × 27 mm
2 layers99 × 48.4 mm
PCB DBFS 1
Arjunprabhakaran/PCB- Size
- 99 × 48.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 30
- Nets
- 47
- Pads
- 137
- Tracks, vias
- 223, 25
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Aug 2026
- Updated
- 3 Aug 2026
Overview
PCB DBFS 1 is an open-source printed circuit board by Arjunprabhakaran, from the Arjunprabhakaran/PCB repository on GitHub. It is a 2-layer board of 99 × 48.4 mm with 30 parts on 47 nets, routed with 223 tracks and 25 vias.
It is built around the ESP32-WROOM-32, HLK-PM12 and AMS1117-3.3, with the 1N4148W and MMBT2222A among its other parts. Its parts include 7 capacitors, 7 connectors, 4 resistors, 4 ICs and 3 diodes. It belongs with the ESP32 boards of this library.
Main components
5
ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
HLK-PM12
插件,34.8x20.5mm0.1W 120V~350V 120mVp-p 12V 15mm 20mm 34mm 350mA 3W 3kV 73% 85VAC~265VAC AC/DC-DC Short Circuit Protection、Over Current Protection ±0.2% 插件,34.8x20.5mm AC-DC Power Modules ROHSHI-LINKAC-DC Power Modules
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
MMBT2222A
SOT-23-55℃~+150℃ 1 NPN 100 100nA 1V 300MHz 300mW 40V 600mA 6V NPN Standalone SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
Parts
30| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10uf | Capacitor_SMD:CP_Elec_5x5.4 | C1, C2, C5, C6 |
| 3 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2, J4, J7 |
| 2 | 0.1uf | Capacitor_SMD:C_0805_2012Metric | C4, C7 |
| 2 | 10K | Resistor_SMD:R_0805_2012Metric | R1, R3 |
| 2 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1, J5 |
| 1 | 1K | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 1N4148W | Diode_SMD:D_SOD-123 | D1 |
| 1 | 220 ohm | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 330uH | Inductor_THT:L_Radial_D10.0mm_P5.00mm_Fastron_07M | L1 |
| 1 | 330uf | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C3 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J6 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | D_Schottky_Small | Diode_SMD:D_SOD-123 | D2 |
| 1 | ESP32-WROOM-32 | RF_Module:ESP32-WROOM-32 | U3 |
| 1 | Fuse | Fuse:Fuseholder_Clip-5x20mm_Keystone_3512_Inline_P23.62x7.27mm_D1.02x1.57mm_Horizontal | F1 |
| 1 | HLK-PM12 | Converter_ACDC:Converter_ACDC_Hi-Link_HLK-PMxx | U4 |
| 1 | LED | LED_THT:LED_D3.0mm | D3 |
| 1 | LM2575-5.0BT | Package_TO_SOT_THT:TO-220-5_Vertical | U1 |
| 1 | MMBT2222A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SANYOU_SRD_Form_C | Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C | K1 |
| 1 | Varistor | Varistor:RV_Disc_D9mm_W4mm_P5mm | RV1 |
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Questions
How big is the PCB DBFS 1 PCB?
It measures 99 × 48.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PCB DBFS 1 use?
30 parts, built around the ESP32-WROOM-32, HLK-PM12, AMS1117-3.3 and 1N4148W. 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 PCB DBFS 1 KiCad files?
From the Arjunprabhakaran/PCB repository on GitHub, at the commit this page was made from: the board is PCB_DBFS_1/PCB_DBFS_1.kicad_pcb and its schematic PCB_DBFS_1/PCB_DBFS_1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PCB DBFS 1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Arjunprabhakaran before reusing the design.