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2 layers30 × 30 mmSolid State Relay, the printed circuit board in 3D

Some small Projects made in KiCaD v8.0

Size
30 × 30 mm
Copper layers
2
Thickness
1.6 mm
Parts
10
Nets
10
Pads
21
Tracks, vias
46, 0
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
19 Dec 2025
Updated
19 Dec 2025

Overview

Solid State Relay is an open-source printed circuit board by AlejandroKT, from the AlejandroKT/KiCad-Projects repository on GitHub. It is a 2-layer board of 30 × 30 mm with 10 parts on 10 nets, routed with 46 tracks and 0 vias.

It is built around the BTA16-600B and MOC3021M. Its parts include 3 resistors, 2 connectors, 1 IC, 1 diode and 1 transistor. It belongs with the home automation and IoT boards of this library.

Main components

2

Parts

10
QtyValueFootprintReferences
21kResistor_SMD:R_0805_2012MetricR1, R2
2LOGOSymbol:logo_empresaG***, G***
1470Resistor_SMD:R_2512_6332MetricR3
1BTA16-600BPackage_TO_SOT_THT:TO-220-3_VerticalQ1
1Conn_01x02_PinConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ1
1LEDLED_SMD:LED_0805_2012MetricD1
1MOC3021MPackage_DIP:DIP-6_W7.62mmU1
1Screw_Terminal_01x02TerminalBlock:TerminalBlock_bornier-2_P5.08mmJ2

Questions

How big is the Solid State Relay PCB?

It measures 30 × 30 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Solid State Relay use?

10 parts, built around the BTA16-600B and MOC3021M. 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 Solid State Relay KiCad files?

From the AlejandroKT/KiCad-Projects repository on GitHub, at the commit this page was made from: the board is SolidSateRelay/Solid State Relay/Solid State Relay.kicad_pcb and its schematic Servo Tester IC 555/Servo Tester/Servo Tester.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Solid State Relay design in my own project?

Its repository states no licence, so its author keeps all rights: ask AlejandroKT before reusing the design.

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