2 layers225 × 130 mm
2 layers75 × 75.1 mm
Relay pc module
mtguerreiro/pcbs- Size
- 75 × 75.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 58
- Nets
- 39
- Pads
- 154
- Tracks, vias
- 222, 22
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 13 Jul 2022
- Updated
- 22 Aug 2026
Overview
Relay pc module is an open-source printed circuit board by mtguerreiro, from the mtguerreiro/pcbs repository on GitHub, published under the BSD-3-Clause licence. It is a 2-layer board of 75 × 75.1 mm with 58 parts on 39 nets, routed with 222 tracks and 22 vias.
It is built around the BCW66H. Its parts include 29 resistors, 8 diodes, 7 connectors, 6 transistors and 3 ICs. It belongs with the home automation and IoT boards of this library.
Main components
1Parts
58| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | TBD | Resistor_THT:R_Axial_DIN0617_L17.0mm_D6.0mm_P5.08mm_Vertical | R1, R2, R3, R10, R11, R12, R19, R20, R21 |
| 6 | 47k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R9, R17, R18, R26, R27 |
| 6 | 4k7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R7, R15, R16, R24, R25 |
| 6 | BCW66H | Package_TO_SOT_SMD:SOT-23W | Q1, Q2, Q3, Q4, Q5, Q6 |
| 5 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D3, D5, D7, D8 |
| 3 | 1N4148 | Diode_SMD:D_SOD-123 | D2, D4, D6 |
| 3 | 2k2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R13, R22 |
| 3 | 360R,>0.35W | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R14, R23 |
| 3 | PC817 | Package_DIP:DIP-4_W8.89mm_SMDSocket_LongPads | U1, U2, U3 |
| 3 | SANYOU_SRD_Form_C | Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C | K1, K2, K3 |
| 3 | Screw_Terminal_01x03 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-3-5.08_1x03_P5.08mm_Horizontal | J4, J5, J6 |
| 2 | 2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R28, R29 |
| 2 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J7, J8 |
| 1 | Conn_02x02_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | J1 |
| 1 | Conn_02x06_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Horizontal | J2 |
The 56 most common of 58 parts.
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Questions
How big is the Relay pc module PCB?
It measures 75 × 75.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Relay pc module use?
58 parts, built around the BCW66H. 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 pc module KiCad files?
From the mtguerreiro/pcbs repository on GitHub, at the commit this page was made from: the board is relay-pc-module/relay-pc-module.kicad_pcb and its schematic adc-board-six-channels/adc-board-six-channels.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Relay pc module design in my own project?
Its repository publishes it under the BSD-3-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).