2 layers
Encoder
byrantech/laptop
anyon_e, a highly integrated, high end, open source laptop. Attempt the impossible.
7 parts4.3kMIT
2 layers70 × 75 mm
MDR-40 Breakout Board
TClevenger/mdr40breakoutMDR-40 breakout board
- Size
- 70 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 7
- Nets
- 41
- Pads
- 88
- Tracks, vias
- 233, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Mar 2026
- Updated
- 30 Apr 2026
Overview
MDR-40 Breakout Board is an open-source printed circuit board by TClevenger, from the TClevenger/mdr40breakout repository on GitHub, published under the CC0-1.0 licence. It is a 2-layer board of 70 × 75 mm with 7 parts on 41 nets, routed with 233 tracks and 0 vias.
It belongs with the interfaces and adapters and microcontroller boards boards of this library.
README
README.mdmdr40breakout
Gerbers for a breakout board for 3M MDR-40 devices and cables, commonly used by IBM in its AS/400 line. Requires a 3M 10240-55G3PC receptacle.
Current release is V1R2 (2026-04-30)
- Corrected pin numbering on silkscreen
Parts
7| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3mm | H1, H2, H3, H4 |
| 1 | 01x02 2.54mm holes | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | 02x20 2.54mm holes | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J2 |
| 1 | MDR-40 receptacle | _Tim:3M_10240-55G3PC | J1 |
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Questions
How big is the MDR-40 Breakout Board PCB?
It measures 70 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MDR-40 Breakout Board use?
7 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 MDR-40 Breakout Board KiCad files?
From the TClevenger/mdr40breakout repository on GitHub, at the commit this page was made from: the board is MDR-40 Breakout Board.kicad_pcb and its schematic MDR-40 Breakout Board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MDR-40 Breakout Board design in my own project?
Its repository publishes it under the CC0-1.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).