

Relay Module Project
- Size
- 46.4 × 38.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 25
- Pads
- 65
- Tracks, vias
- 176, 10
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 4 Sep 2022
- Updated
- 5 Jul 2025
Overview
Relay Module Project is an open-source printed circuit board by polrolnik2, from the polrolnik2/Smart-Home-Modular repository on GitHub. It is a 2-layer board of 46.4 × 38.1 mm with 20 parts on 25 nets, routed with 176 tracks and 10 vias.
It is built around the 1N4448W-7-FS, T50201500000G and SSM6N7002CFU,LF, with the SSW-105-01-T-D among its other parts. Its parts include 8 resistors, 4 connectors, 3 diodes, 3 switches and 2 transistors. It belongs with the home automation and IoT boards of this library.
Main components
41N4448W-7-FS
SOD-123SOD-123 Switching Diodes ROHSFUXINSEMISwitching DiodesT50201500000G
插件,P=3.5mm插件,P=3.5mm Screw Terminal Blocks ROHSAmphenolPluggable System Terminal BlockSSM6N7002CFU,LF
TSSOP-6(SC-88)SOT-363170mA 17pF 2 N-Channel 2.1V 270pC@4.5V 285mW 3.2Ω@4.5V 3pF 60V 700fF N-Channel US6 MOSFETs ROHSToshibaMOSFETsSSW-105-01-T-D
插件,P=2.54mm-55℃~+105℃ 10P 2 2.54mm 2.54mm 4.7A 8.51mm Phosphor bronze Square Hole Through Hole Tin 插件,P=2.54mm Female Headers ROHSSamtecFemale Headers
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | ERJ-3GEYJ103V | ERJ-3GEYJ103V:RESC1608X55N | R1, R3, R4, R5 |
| 3 | 1N4448W-7-F | 1N4448W-7-F:SOD3716X145N | D1, D2, D3 |
| 3 | ERJ-3EKF2000V | ERJ-3EKF2000V:ERJ3EK_(0603) | R6, R7, R8 |
| 3 | G5Q-14_DC9 | G5Q-14 DC9_n:G5Q-14 DC9 | K1, K2, K3 |
| 3 | T50201500000G | T50201500000G:T50201500000G | J2, J3, J4 |
| 2 | SSM6N7002CFU,LF | SamacSys_Parts:SSOP6-P-0.65A_US6_ | Q1, Q2 |
| 1 | ERJ-3GEYJ203V | ERJ-3GEYJ103V:RESC1608X55N | R2 |
| 1 | SSW-105-01-T-D | SSW-105-01-T-D:SSW10501TD | J1 |
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Questions
How big is the Relay Module Project PCB?
It measures 46.4 × 38.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Relay Module Project use?
20 parts, built around the 1N4448W-7-FS, T50201500000G, SSM6N7002CFU,LF and SSW-105-01-T-D. 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 Project KiCad files?
From the polrolnik2/Smart-Home-Modular repository on GitHub, at the commit this page was made from: the board is Modules/Relay_Module/Relay_Module_Project/Relay_Module_Project.kicad_pcb and its schematic Modules/230V_Motor_Module/230V_Motor_Project/230V_Motor_Project.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Relay Module Project design in my own project?
Its repository states no licence, so its author keeps all rights: ask polrolnik2 before reusing the design.