2 layers38 × 26 mm
2 layers38 × 26 mm
Relay Module
shetevaibhav014/5V-Single_Channel_Relay-ModuleAn open-source, production-ready 2-layer PCB design for a 5V Single-Channel Relay Module featuring safety-first routing.
- Size
- 38 × 26 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 9
- Pads
- 24
- Tracks, vias
- 36, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 7 Oct 2026
- Updated
- 7 Oct 2026
Overview
Relay Module is an open-source printed circuit board by shetevaibhav014, from the shetevaibhav014/5V-Single_Channel_Relay-Module repository on GitHub. It is a 2-layer board of 38 × 26 mm with 10 parts on 9 nets, routed with 36 tracks and 0 vias.
It is built around the MMBT2222A and MRA4003T3G-MS. Its parts include 3 resistors, 2 diodes, 2 connectors, 1 transistor and 1 switch. It belongs with the home automation and IoT boards of this library.
Main components
2Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R3 |
| 1 | 1K | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | J1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | MMBT2222A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | MRA4003T3G | Diode_SMD:D_SMA | D1 |
| 1 | SANYOU_SRD_Form_C | Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C | K1 |
| 1 | Screw_Terminal_01x03 | TerminalBlock:TerminalBlock_Xinya_XY308-2.54-3P_1x03_P2.54mm_Horizontal | J2 |
The 9 most common of 10 parts.
Similar boards
- 2 layers104 × 60 mm
UTAC PCB
X-zeed/UTAC-PCB
4-channel smart relay control board with ESP32-C3 SuperMini - KiCad PCB Design v0.2.0
59 parts2 - 2 layers83.5 × 85 mm
- 2 layers106 × 81 mm
Load Ctrl
Nayan9ine/Load-Control-Using-Relay-Module-and-IR-Remote
Created a load control system in which load connected to relay module is turned ON or OFF by entering a password using IR based remote. Built on arduino UNO R3 clone using CH340 chip.
25 parts - 2 layers63 × 35 mm
- 2 layers60.5 × 27.5 mm
03 Relay Driver
dhivyaadevi-K/PCB-Design-Learning-Series
A structured collection of PCB design projects created using KiCad 9, documenting my learning journey from basic electronic circuits to advanced PCB layouts.
9 parts1 - 4 layers82.8 × 33 mm
E ink watch
sandgum/Triangulate-ES_01-Watch
A 5mm thick smartwatch which uses an E-ink display and two OLEDs to display information while consuming very little power
162 parts22 - 2 layers102.9 × 99.1 mm
Questions
How big is the Relay Module PCB?
It measures 38 × 26 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Relay Module use?
10 parts, built around the MMBT2222A and MRA4003T3G-MS. 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 Relay Module KiCad files?
From the shetevaibhav014/5V-Single_Channel_Relay-Module repository on GitHub, at the commit this page was made from: the board is Relay Module/Relay_Module/Relay_Module.kicad_pcb and its schematic Relay Module/Relay_Module/Relay_Module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Relay Module design in my own project?
Its repository states no licence, so its author keeps all rights: ask shetevaibhav014 before reusing the design.