2 layers95.9 × 112.6 mm
2 layers81.2 × 82.6 mm
Model train cdu
cbrake/hardware-projectsMisc hardware projects
- Size
- 81.2 × 82.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 12
- Pads
- 86
- Tracks, vias
- 68, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 16 Oct 2013
- Updated
- 31 Jan 2023
Overview
Model train cdu is an open-source printed circuit board by cbrake, from the cbrake/hardware-projects repository on GitHub. It is a 2-layer board of 81.2 × 82.6 mm with 20 parts on 12 nets, routed with 68 tracks and 0 vias.
It is built around the TIP121. Its parts include 5 resistors, 4 diodes, 4 connectors, 2 capacitors and 1 transistor.
Main components
1README
README.mdHardware Projects
Various hardware projects and notes.
Simple IoT hardware designs have moved to: https://github.com/simpleiot/hardware
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 2.2K | Resistor_SMD:R_1206_3216Metric | R2, R3, R4, R5 |
| 4 | MountingHole | MountingHole:MountingHole_4.3mm_M4 | H1, H2, H3, H4 |
| 3 | RECT_50V_1A | Diode_SMD:D_SMA | D2, D3, D4 |
| 2 | 1000uF_35V | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C1, C2 |
| 2 | Screw_Terminal_01x12 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-12-5.0-H_1x12_P5.00mm_Horizontal | J2, J3 |
| 2 | Screw_Terminal_01x16 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-16-5.0-H_1x16_P5.00mm_Horizontal | J1, J4 |
| 1 | 1K | Resistor_SMD:R_1206_3216Metric | R1 |
| 1 | LED | digikey-footprints:LED_3mm_Radial | D1 |
| 1 | TIP121 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | Q1 |
Questions
How big is the Model train cdu PCB?
It measures 81.2 × 82.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Model train cdu use?
20 parts, built around the TIP121. 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 Model train cdu KiCad files?
From the cbrake/hardware-projects repository on GitHub, at the commit this page was made from: the board is model-train-cdu/model-train-cdu.kicad_pcb and its schematic schematics/817-opto-isolator-module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Model train cdu design in my own project?
Its repository states no licence, so its author keeps all rights: ask cbrake before reusing the design.
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