2 layers42.5 × 22.5 mm
2 layers40 × 26.5 mm
- Size
- 40 × 26.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 8
- Nets
- 11
- Pads
- 25
- Tracks, vias
- 50, 0
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 13 Jun 2025
- Updated
- 11 Nov 2025
Overview
LatchingRelay is an open-source printed circuit board by Open-Source-Model-Railway-Electronics, from the Open-Source-Model-Railway-Electronics/Analog-Layout-Control repository on GitHub. It is a 2-layer board of 40 × 26.5 mm with 8 parts on 11 nets, routed with 50 tracks and 0 vias.
Its parts include 3 connectors, 1 resistor, 1 diode and 1 switch.
README
README.mdAnalog-Layout-Control
Parts
8| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | Screw_Terminal_01x03 | Connector_Phoenix_MC:PhoenixContact_MC_1,5_3-G-3.5_1x03_P3.50mm_Horizontal | J101, J102, J103 |
| 1 | 47R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R101 |
| 1 | AZ850P2-x | Relay_THT:Relay_DPDT_FRT5 | K101 |
| 1 | D | Diode_THT:D_DO-34_SOD68_P7.62mm_Horizontal | D101 |
The 6 most common of 8 parts.
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Questions
How big is the LatchingRelay PCB?
It measures 40 × 26.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LatchingRelay use?
8 parts. 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 LatchingRelay KiCad files?
From the Open-Source-Model-Railway-Electronics/Analog-Layout-Control repository on GitHub, at the commit this page was made from: the board is hardware/latchingRelay/latchingRelay.kicad_pcb and its schematic hardware/BlockModule1speed/BlockModule1speed.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LatchingRelay design in my own project?
Its repository states no licence, so its author keeps all rights: ask Open-Source-Model-Railway-Electronics before reusing the design.