4 layers38.9 × 23.3 mm
OWL - Rotor v2
sedlak477/owl-hardware
Hardware design files and build instructions for the OWL platform
118 partsCERN-OHL-P-2.0
4 layers54 × 92.8 mm
RSS CM4-IO
Grim-Raid/Timepix_RSS_Schematic- Size
- 54 × 92.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 99
- Nets
- 192
- Pads
- 482
- Tracks, vias
- 929, 105
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Jul 2026
- Updated
- 17 Jul 2026
Overview
RSS CM4-IO is an open-source printed circuit board by Grim-Raid, from the Grim-Raid/Timepix_RSS_Schematic repository on GitHub. It is a 4-layer board of 54 × 92.8 mm with 99 parts on 192 nets, routed with 929 tracks and 105 vias.
It is built around the USB2422-I/MJ, TPS2052BD and TPS2553DBVR-1, with the TPS259470ARPW, TPD2E009DBZ and HX1188NL among its other parts. Its parts include 34 capacitors, 28 resistors, 10 connectors, 5 diodes and 4 ICs. It belongs with the computers and single-board computers boards and the Raspberry Pi (Linux) boards of this library.
Main components
8
USB2422-I/MJ
QFN-24-EP(4x4)-40℃~+85℃ 2 3.3V 425uA 480Mbps 70mA Hub Port power switch control、Internal regulator、Overcurrent Protection、ESD Protection、Downstream port power switch、BC1.1 protocol support SMBus USB 2.0 QFN-24-EP(4x4) USB HUB Controllers ROHSMicrochip TechnologyUSB Converters
TPS2052BD
SOIC-8-40℃~+85℃ 2 2.7V~5.5V 500mA 70mΩ Active High High Side Switch 欠压锁定、集成电荷泵、Overcurrent Protection、Over temperature protection、Short-Circuit Protection SOIC-8 Power Distribution Switches ROHSTexas InstrumentsPower Distribution Switches
TPS2553DBVR-1
SOT-23-6-40℃~+150℃ 1 1.5A 2.5V~6.5V 85mΩ Active High High Side Switch 过压保护、软启动、欠压锁定、反向电压保护、集成电荷泵、Overcurrent Protection、Over temperature protection、锁存保护、Short-Circuit Protection、反向电流阻断 SOT-23-6 Power Distribution Switches ROHSTexas InstrumentsPower Distribution Switches
TPS259470ARPW
QFN-10(2x2)-40℃~+125℃ 1 1mm 2.7V~23V 28.3mΩ 2mm 2mm Integrated FET Surface Mount QFN-10(2x2) Surge Protection Devices (SPDs) ROHSTexas InstrumentsSurge Protection Devices (SPDs)
TPD2E009DBZ
SOT-23-40℃~+85℃ 0.9pF 100nA 2 45W@8/20us 5.5V 5A@8/20us 7V 8V ESD IEC 61000-4-2、IEC 61000-4-5 SOT-23 ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsESD And Surge Protection (TVS/ESD)
HX1188NL
SMD-16P,12.7x7.1mm-40℃~+85℃ 1.5kV 12.7mm 1:1 350uH 5.97mm 7.1mm SMD-16P,12.7x7.1mm Pulse Transformers ROHSPulse ElecPulse Transformers
SMBJ5.0A
DO-214AA(SMB)-65℃~+150℃ 5V 600W@10/1000us 65.3A@10/1000us 7V 800uA 9.2V TVS Unidirectional DO-214AA(SMB) ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)
SIA441DJ
PowerPAK-SC-70-6-Single-55℃~+150℃ 1 P-Channel 1.2V 11nC@10V 12A 12W 40V 47mΩ@10V 890pF PowerPAK-SC-70-6-Single MOSFETs ROHSVishay IntertechnologyMOSFETs
Parts
99| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C7, C9, C10, C11, C13, C16, C18, C21, C23, C26, C29, C30, C31 |
| 9 | 100k | Resistor_SMD:R_0603_1608Metric | R1, R2, R5, R6, R7, R11, R12, R13, R14 |
| 7 | 22uF | Capacitor_SMD:C_1210_3225Metric | C3, C6, C8, C24, C25, C27, C28 |
| 6 | 75R | Resistor_SMD:R_0603_1608Metric | R17, R18, R19, R20, R21, R22 |
| 4 | CM4 standoff M2.5 | MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad | H5, H6, H7, H8 |
| 4 | board M2.5 | MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad | H1, H2, H3, H4 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R8, R15, R16 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric | C19, C20, C22 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R9, R27, R28 |
| 3 | FID | Fiducial:Fiducial_0.5mm_Mask1mm | FID1, FID2, FID3 |
| 2 | 100uF | Capacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B | C1, C2 |
| 2 | 1nF | Capacitor_SMD:C_0603_1608Metric | C33, C34 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C12, C17 |
| 2 | 27pF | Capacitor_SMD:C_0603_1608Metric | C14, C15 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R24, R25 |
| 2 | TPD2E009 | Package_TO_SOT_SMD:SOT-23 | D2, D3 |
| 1 | +3V3_HUB | TestPoint:TestPoint_Pad_1.5x1.5mm | TP4 |
| 1 | +5V_SYS | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 12k 1% | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 1nF 2kV | Capacitor_SMD:C_1206_3216Metric | C32 |
| 1 | 20k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 220R | Resistor_SMD:R_0603_1608Metric | R26 |
| 1 | 24MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 953R 1% | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | ACT yellow | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | CM4 DF40 (pins 1-100) | Connector_Hirose_DF40:Hirose_DF40C-100DS-0.4V_2x50_P0.4mm | J2 |
| 1 | CM4 DF40 (pins 101-200) | RSS_custom:Hirose_DF40C-100DS-0.4V_2x50_P0.4mm_Pads101-200 | J3 |
| 1 | CM4 reset | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J10 |
| 1 | DB-9 power+ethernet | Connector_Dsub:DSUB-9_Socket_Vertical_P2.77x2.84mm_MountingHoles | J1 |
| 1 | Debug UART (GPIO14/15) | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J8 |
| 1 | GLOBAL_EN | TestPoint:TestPoint_Pad_1.5x1.5mm | TP3 |
| 1 | GND | TestPoint:TestPoint_Pad_1.5x1.5mm | TP2 |
| 1 | HX1188NL | RSS_custom:Pulse_HX1188NL_SMD16 | T1 |
| 1 | I2C0 expansion (SDA0/SCL0) | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J9 |
| 1 | PWR green | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | SMBJ5.0A | Diode_SMD:D_SMB | D1 |
| 1 | SiA441DJ | Package_TO_SOT_SMD:Vishay_PowerPAK_SC70-6L_Single | Q1 |
| 1 | TPS2052B | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | TPS2553DBVR | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | TPS259470ARPW | Package_DFN_QFN:Texas_RUN0010A_WQFN-10_2x2mm_P0.5mm | U1 |
| 1 | USB Port 1 (Timepix A) | RSS_custom:Hirose_DF14A-4P-1.25H_Horizontal_SMT | J4 |
| 1 | USB Port 2 (Timepix B) | RSS_custom:Hirose_DF14A-4P-1.25H_Horizontal_SMT | J5 |
| 1 | USB-C service (DNP) | RSS_custom:USB4105_GCT | J6 |
| 1 | USB2422-I/MJ | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U3 |
| 1 | nRPIBOOT jumper | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J7 |
Questions
How big is the RSS CM4-IO PCB?
It measures 54 × 92.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the RSS CM4-IO use?
99 parts, built around the USB2422-I/MJ, TPS2052BD, TPS2553DBVR-1 and TPS259470ARPW. 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 RSS CM4-IO KiCad files?
From the Grim-Raid/Timepix_RSS_Schematic repository on GitHub, at the commit this page was made from: the board is RSS-CM4-IO.kicad_pcb and its schematic RSS-CM4-IO.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RSS CM4-IO design in my own project?
Its repository states no licence, so its author keeps all rights: ask Grim-Raid before reusing the design.
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