4 layers59.8 × 41.1 mm
SmartPowerBoard
murexrobotics/electrical
Highly integrated electronics design and printed circuit boards (PCBs) for the MATE ROV Competition. Attempt the impossible.
117 parts192MIT
4 layers44.9 × 42.1 mm
Highly integrated electronics design and printed circuit boards (PCBs) for the MATE ROV Competition. Attempt the impossible.
- Size
- 44.9 × 42.1 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 72
- Nets
- 88
- Pads
- 285
- Tracks, vias
- 703, 139
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 May 2023
- Updated
- 14 Oct 2026
Overview
Switch is an open-source printed circuit board by murexrobotics, from the murexrobotics/electrical repository on GitHub, published under the MIT licence. It is a 4-layer board of 44.9 × 42.1 mm with 72 parts on 88 nets, routed with 703 tracks and 139 vias.
It is built around the IP175G, LM1117MP-3.3 and BT16A07, with the QT48A03 among its other parts. Its parts include 33 capacitors, 16 resistors, 7 diodes, 7 connectors and 2 ICs.
Main components
4
IP175G
QFN-48-EP(6x6)0℃~+70℃ 1024 10BASE-T、100BASE-TX 16 3.3V 5 Yes QFN-48-EP(6x6) Ethernet Switches ROHSIC PlusEthernet Switches
LM1117MP-3.3
SOT-2230℃~+125℃@(Ta) 1 1.2V@(800mA) 15V 3.3V 5mA 75dB@(120Hz) 800mA 99uVrms Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BT16A07
SMD1:1 SMD Pulse Transformers(LAN) ROHSTNKPulse Transformers(LAN)
QT48A03
SMD0℃~+70℃ 1.5kV 1:1 2 POE SMD Pulse Transformers(LAN) ROHSTNKPulse Transformers(LAN)
README
power/README.mdDocumentation
Parts
72| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C2, C4, C13, C14, C15, C16, C17, C18, C21, C22, C23, C24, C25, C26, C27, C28 +2 |
| 6 | 1k | Resistor_SMD:R_0402_1005Metric | R9, R10, R11, R12, R13, R14 |
| 6 | ~ | LED_SMD:LED_0603_1608Metric | D1, D2, D3, D4, D5, D6 |
| 5 | 1nF 2KV (1206) | Capacitor_SMD:C_1206_3216Metric | C29, C30, C31, C32, C33 |
| 5 | 75 | Resistor_SMD:R_0402_1005Metric | R21, R22, R23, R24, R25 |
| 3 | 0 | Resistor_SMD:R_0402_1005Metric | R1, R4, R7 |
| 2 | 10uF | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C1, C3 |
| 2 | 22uF | Capacitor_SMD:C_0402_1005Metric | C6, C11 |
| 2 | 30pF | Capacitor_SMD:C_0603_1608Metric | C19, C20 |
| 2 | 47uF | Capacitor_SMD:C_0402_1005Metric | C7, C12 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 1 | 10uF/NC | Capacitor_SMD:C_0402_1005Metric | C10 |
| 1 | 25MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 3.3V IN | Connector_Molex:Molex_PicoBlade_53047-0210_1x02_P1.25mm_Vertical | J3 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C8 |
| 1 | 470K | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 6.2k 1% | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | BT16A07 | BT16A07:BT16A07 | T3 |
| 1 | IP175G | Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.3x4.3mm_ThermalVias | U3 |
| 1 | Input Diode | Diode_SMD:D_SMA | D7 |
| 1 | LDO IN | Connector_Molex:Molex_PicoBlade_53047-0210_1x02_P1.25mm_Vertical | J1 |
| 1 | LM1117MP-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | LOGO | Brandings:10x10mm_Branding | G*** |
| 1 | PHY 1 | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J8 |
| 1 | PHY 2 | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J7 |
| 1 | PHY 3 | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J6 |
| 1 | PHY 4 | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J5 |
| 1 | PHY 5 | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J4 |
| 1 | QT48A03 | QT24A23:QT48A03 | T2 |
The 71 most common of 72 parts.
Questions
How big is the Switch PCB?
It measures 44.9 × 42.1 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Switch use?
72 parts, built around the IP175G, LM1117MP-3.3, BT16A07 and QT48A03. 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 Switch KiCad files?
From the murexrobotics/electrical repository on GitHub, at the commit this page was made from: the board is networking/switch/switch.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Switch design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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