2 layers53 × 80 mm
2 layers65 × 80 mm
LAM-4I4O REVC
b4ck5p4c3/lambium🏭 Series of weird space automation devices
- Size
- 65 × 80 mm
- Copper layers
- 2
- Thickness
- 1.58 mm
- Parts
- 68
- Nets
- 49
- Pads
- 166
- Tracks, vias
- 236, 11
- Pours
- 33
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 10 Nov 2024
- Updated
- 2 May 2026
Overview
LAM-4I4O REVC is an open-source printed circuit board by b4ck5p4c3, from the b4ck5p4c3/lambium repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 2-layer board of 65 × 80 mm with 68 parts on 49 nets, routed with 236 tracks and 11 vias.
It is built around the SN75176BDRG, ULN2003 and BZV55C5V1, with the LL4448, MF-NSMF050-2 and PESD12VS2UT among its other parts. Its parts include 16 diodes, 12 connectors, 9 resistors, 6 capacitors and 5 fuses. It belongs with the RISC-V boards of this library.
Main components
10
SN75176BDRG
SOP-8SOP-8 RS-485 / RS-422 ICs ROHSHANSCHIP semiconductorRS-485 / RS-422 ICs
ULN2003
SOP-161.1V@250uA,100mA 25pF 2V 30V 500mA 50uA 50uA Seven channels SOP-16 Darlington Transistor Arrays ROHSBLDarlington Transistor Arrays
BZV55C5V1
SOD-80-65℃~+200℃ 1 Independent 100nA@1V 35Ω 4.8V~5.4V 5.1V 500mW 550Ω SOD-80 Zener Diodes ROHSLGEZener DiodesLL4448
MiniMELFMiniMELF Switching Diodes ROHSLGESwitching Diodes
MF-NSMF050-2
1206-40℃~+85℃ 1.6mm 100A 13.2V 150mΩ 3.2mm 500mA 700mΩ 1206 Resettable Fuses ROHSBournsResettable Fuses
PESD12VS2UT
SOT-23-3L10A@8/20us 12V 15V 2 300W@8/20us 30V 500nA 60pF ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 SOT-23-3L ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
MF-SM075-2
SMD,8x5.4mm-40℃~+85℃ 1.7W 1Ω 230mΩ 30V 5.4mm 80A 8mm SMD,8x5.4mm Resettable Fuses ROHSBournsResettable Fuses
PESD12VS1UB
SOD-523-55℃~+125℃ 1 12V 150W@8/20us 15V 19V、30V 200nA 35pF IEC 61000-4-2、IEC 61000-4-4 TVS Unidirectional SOD-523 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
PESD15VL2BT
SOT-23-65℃~+150℃ 15V 16pF 17.1V 2 200W 44V 50nA 5A Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 SOT-23 ESD and Surge Protection (TVS/ESD) ROHSNexperiaESD And Surge Protection (TVS/ESD)
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdLambium
Monorepo for weird building control and automation devices we built in B4CKSP4CE.
License
- Hardware designs are licensed under the CERN Open Hardware Licence Version 2 - Strongly Reciprocal (CERN-OHL-S-2.0).
- Software is licensed under the Mozilla Public License 2.0.
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | MC 1,5/2G-3,81 | Connector_Phoenix_MC:PhoenixContact_MC_1,5_2-G-3.81_1x02_P3.81mm_Horizontal | J5, J6, J7, J8, J9, J10, J11, J12 |
| 8 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13 |
| 4 | 1K | Resistor_SMD:R_0805_2012Metric | R6, R7, R8, R9 |
| 4 | BZV55C5V1 | Diode_SMD:D_MiniMELF | D7, D8, D9, D10 |
| 4 | LL4448 | Diode_SMD:D_MiniMELF | D11, D12, D13, D14 |
| 4 | MF-NSMF050-2 | Fuse:Fuse_1206_3216Metric | F2, F3, F4, F5 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad_TopOnly | H1, H2, H3, H4 |
| 3 | 0.1uF / 16V | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3 |
| 3 | 200R | Resistor_SMD:R_0805_2012Metric | R3, R4, R5 |
| 3 | LED | LED_SMD:LED_1206_3216Metric_ReverseMount_Hole1.8x2.4mm | D4, D5, D6 |
| 3 | MC1,5 2G-3.81 | Connector_Phoenix_MC:PhoenixContact_MCV_1,5_2-G-3.81_1x02_P3.81mm_Vertical | J1, J2, J3 |
| 2 | 10R | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | 10uF / 16V | Capacitor_SMD:C_0805_2012Metric | C4, C5 |
| 2 | PESD12VS2UT | Package_TO_SOT_SMD:SOT-23 | D15, D16 |
| 1 | 470uF / 25V | Capacitor_SMD:CP_Elec_6.3x5.9 | C6 |
| 1 | 485A | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | 485B | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | CH32V003AxMx | Package_SO:SOP-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | LT1117-5.0 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | MF-SM075-2 | Custom:FUSE-SMD_L7.4-W5.4 | F1 |
| 1 | PESD12VS1UB | Diode_SMD:D_SOD-523 | D3 |
| 1 | PESD15VL2BT | Package_TO_SOT_SMD:SOT-23 | D1 |
| 1 | PLS | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | SN75176BDR | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | SS14 | Diode_SMD:D_SMA | D2 |
| 1 | SWIO | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | ULN2003 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U4 |
The 67 most common of 68 parts.
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Questions
How big is the LAM-4I4O REVC PCB?
It measures 65 × 80 mm and has 2 copper layers, 1.58 mm thick.
What parts does the LAM-4I4O REVC use?
68 parts, built around the SN75176BDRG, ULN2003, BZV55C5V1 and LL4448. 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 LAM-4I4O REVC KiCad files?
From the b4ck5p4c3/lambium repository on GitHub, at the commit this page was made from: the board is LAM-4I4O/hardware/LAM-4I4O-REVC/LAM-4I4O-REVC.kicad_pcb and its schematic LAM-4I4O/hardware/LAM-4I4O-REVA/lam-4i4o.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LAM-4I4O REVC design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).