2 layers82.5 × 127 mm
Power supply
nunosousa/SCART-switcher
An old school SCART switcher. Its main purpose will be to automaticaly detect and switch the video output to the active input video source.
59 parts
4 layers255 × 127 mm
SCART switcher
nunosousa/SCART-switcherAn old school SCART switcher. Its main purpose will be to automaticaly detect and switch the video output to the active input video source.
- Size
- 255 × 127 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 613
- Nets
- 362
- Pads
- 1,760
- Tracks, vias
- 4,312, 696
- Pours
- 2,652
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 14 Aug 2023
- Updated
- 2 Mar 2025
Overview
SCART switcher is an open-source printed circuit board by nunosousa, from the nunosousa/SCART-switcher repository on GitHub. It is a 4-layer board of 255 × 127 mm with 613 parts on 362 nets, routed with 4,312 tracks and 696 vias.
It is built around the OPA1656ID, OPA4354AID and SN74LVC1G3157DCKR, with the SN74LVC1G08DCKR, SN74LVC1G04DCKR and CD4066BM96 among its other parts. Its parts include 253 resistors, 155 capacitors, 88 ICs, 49 diodes and 40 transistors.
Main components
12
OPA1656ID
SOIC-8-18V~-2.25V、2.25V~18V -40℃~+125℃ 100mA 120dB 1mV 2 20pA 20pA 24V/us 2uV/℃ 3.9mA 4.3nV/√Hz@1kHz 4.5V~36V 53MHz Rail-to-rail output SOIC-8 FET Input Amplifiers ROHSTexas InstrumentsAudio Amplifiers
OPA4354AID
SOIC-14-2.75V~2.75V -40℃~+125℃ 100MHz 100mA 150V/us 1pA 2.5V~5.5V 2mV 4 4.9mA 4uV/℃ 5.5V 50pA 6.5nV/√Hz@1MHz 66dB Rail-to-Rail Input, Rail-to-Rail Output SOIC-14 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
SN74LVC1G3157DCKR
SC-70-6-55℃~+125℃ 1.65V~5.5V 12Ω 15.5pF 24ns 2:1 350MHz SC-70-6 Analog Switches, Multiplexers ROHSUMWAnalog Switches, Multiplexers
SN74LVC1G08DCKR
SC-70-5-40℃~+85℃ 1.47V、1.64V、2.15V、2.73V、4V 1.65V~5.5V 100nA 10mV、110mV、110mV、200mV、350mV 2 2 3.4ns@5V,15pF 32mA 32mA 74LVC AND Gate SC-70-5 Logic Gates ROHSTWGMCLogic GatesSN74LVC1G04DCKR
SC-70-5-40℃~+105℃ 1 1.65V~5.5V 1.7V 10ns@5V,15pF 10uA 32mA 32mA 580mV~1.65V 74LVC Power shutdown protection SC-70-5 Inverters ROHSUMWInvertersCD4066BM96
SOIC-14-55℃~+125℃ 125Ω 15ns 3V~18V 4 40MHz SOIC-14 Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, MultiplexersSN74LVC1G14DCKR
SOT-353-40℃~+125℃ 1 1 1.65V~5.5V 10uA 24mA 24mA 74LVC SOT-353 Inverters ROHSTECH PUBLICLogic Gates
LM4041DIDBZT
SOT-23-40℃~+85℃ 1.225V~10V 12mA 150ppm/℃ 20uVrms 75uA Adjustable Parallel ±1% SOT-23 Voltage Reference ROHSTexas InstrumentsVoltage Reference
LMV331IDBVR
SOT23-5-2.75V~-0.9V、0.9V~2.75V -40℃~+85℃ 1 1.8V~5.5V 2uV/℃ 40uA 4pA 500uV 5ns 6mV 6pA 70dB 77.5ns 7V Open Drain Rail-to-Rail Input, Rail-to-Rail Output TTL、CMOS SOT23-5 Comparators ROHSTECH PUBLICComparators
RT0805BRD071KL
0805-55℃~+155℃ 125mW 150V 1kΩ Thin Film Resistor ±0.1% ±25ppm/℃ 0805 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
AC1210FR-0775RL
1210-55℃~+155℃ 200V 500mW 75Ω Thick Film Resistor ±1% ±100ppm/℃ 1210 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
BZT52H-B6V8
SOD-123F1 Independent 2uA@4V 6.66V~6.94V 6.8V 830mW 8Ω ±2% SOD-123F Zener Diodes ROHSNexperiaZener Diodes
README
README.mdSCART switcher
Work in progress
to be completed
Parts
613| Qty | Value | Footprint | References |
|---|---|---|---|
| 88 | 100nC | Capacitor_SMD:C_0603_1608Metric | C1, C10, C11, C12, C105, C106, C107, C110, C111, C112, C117, C120, C121, C122, C125, C126 +72 |
| 44 | 100kR | Resistor_SMD:R_0805_2012Metric | R11, R12, R15, R16, R101, R102, R107, R108, R115, R116, R128, R142, R143, R150, R151, R163 +28 |
| 37 | 1kR | Resistor_SMD:R_0805_2012Metric | R110, R111, R117, R118, R120, R121, R122, R123, R132, R133, R134, R135, R145, R146, R152, R153 +21 |
| 35 | 74LVC1G3157 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U5, U6, U7, U10, U60, U61, U62, U63, U64, U74, U75, U102, U103, U104, U105, U106 +19 |
| 34 | 75R | Resistor_SMD:R_1210_3225Metric | R105, R106, R109, R113, R114, R130, R131, R138, R139, R140, R141, R144, R148, R149, R167, R168 +18 |
| 30 | BZT52H-B6V8 | Diode_SMD:D_SOD-123F | D1, D2, D10, D11, D12, D15, D16, D17, D18, D19, D22, D23, D24, D25, D26, D29 +14 |
| 29 | 10kR | Resistor_SMD:R_0805_2012Metric | R1, R13, R19, R112, R127, R147, R154, R156, R174, R181, R183, R201, R208, R210, R228, R235 +13 |
| 28 | 220kR | Resistor_SMD:R_0805_2012Metric | R2, R20, R25, R100, R157, R161, R162, R184, R188, R189, R211, R215, R216, R238, R242, R243 +12 |
| 27 | 4k7R | Resistor_SMD:R_0805_2012Metric | R14, R21, R22, R26, R119, R124, R155, R158, R182, R185, R209, R212, R236, R239, R263, R266 +11 |
| 26 | BC847 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q10, Q11, Q12, Q13, Q14, Q15, Q24, Q25, Q29, Q30, Q33, Q34, Q37 +10 |
| 24 | 47uC | Capacitor_SMD:CP_Elec_4x5.8 | C103, C104, C108, C109, C118, C119, C123, C124, C133, C134, C138, C139, C148, C149, C153, C154 +8 |
| 24 | 74LVC1G08 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U2, U12, U14, U16, U18, U20, U34, U37, U38, U40, U41, U43, U44, U46, U100, U107 +8 |
| 22 | 20kR | Resistor_SMD:R_0805_2012Metric | R74, R75, R76, R77, R103, R104, R165, R166, R192, R193, R219, R220, R246, R247, R273, R274 +6 |
| 18 | 100R | Resistor_SMD:R_0805_2012Metric | R10, R88, R89, R90, R91, R129, R159, R160, R186, R187, R213, R214, R240, R241, R267, R268 +2 |
| 12 | 1nC | Capacitor_SMD:C_0805_2012Metric | C46, C47, C113, C114, C128, C129, C143, C144, C158, C159, C173, C174 |
| 12 | 22uC | Capacitor_SMD:CP_Elec_5x5.4 | C48, C49, C115, C116, C130, C131, C145, C146, C160, C161, C175, C176 |
| 12 | 2SK209 | Package_TO_SOT_SMD:SC-59 | Q26, Q27, Q31, Q32, Q35, Q36, Q39, Q40, Q43, Q44, Q47, Q48 |
| 11 | 10uC | Capacitor_SMD:CP_Elec_4x5.4 | C31, C34, C38, C39, C40, C41, C42, C43, C44, C91, C98 |
| 8 | 74LVC1G04 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U3, U4, U36, U39, U42, U45, U48, U51 |
| 8 | MountingHole | MountingHole:MountingHole_5.5mm | H1, H2, H3, H4, H5, H6, H7, H8 |
| 7 | BAS16H | Diode_SMD:D_SOD-123F | D71, D72, D73, D74, D75, D76, D77 |
| 7 | CD4066 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U8, U35, U80, U87, U94, U101, U108 |
| 7 | SCART-F | Connector_SCART:SCART-F | J1, J4, J5, J6, J7, J8, J9 |
| 6 | 300R | Resistor_SMD:R_0805_2012Metric | R5, R23, R28, R33, R38, R43 |
| 6 | 74LVC1G14 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U137, U138, U139, U140, U141, U142 |
| 6 | BZT52H-C3V3 | Diode_SMD:D_SOD-123F | D6, D13, D20, D27, D34, D41 |
| 6 | LED | LED_THT:LED_D5.0mm | D7, D14, D21, D28, D35, D42 |
| 4 | 1000uC | Capacitor_SMD:CP_Elec_10x10.5 | C92, C94, C99, C101 |
| 4 | 100nC | Capacitor_SMD:C_1206_3216Metric | C93, C95, C100, C102 |
| 4 | 2kR | Resistor_SMD:R_0805_2012Metric | R125, R126, R136, R137 |
| 3 | OPA1656 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U31, U32, U33 |
| 2 | BC857 | Package_TO_SOT_SMD:SOT-23 | Q4, Q28 |
| 2 | LM4041LP-ADJ | Package_TO_SOT_SMD:SOT-23-3 | U29, U30 |
| 2 | OPA4354 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U71, U73 |
| 1 | 374R | Resistor_SMD:R_0805_2012Metric | R69 |
| 1 | 523R | Resistor_SMD:R_0805_2012Metric | R67 |
| 1 | 681R | Resistor_SMD:R_0805_2012Metric | R72 |
| 1 | 976R | Resistor_SMD:R_0805_2012Metric | R64 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J14 |
| 1 | G*** | kibuzzard-6741F401 | kibuzzard-6741F401 |
| 1 | G*** | kibuzzard-673FB8DE | kibuzzard-673FB8DE |
| 1 | G*** | kibuzzard-673FB8B3 | kibuzzard-673FB8B3 |
| 1 | G*** | kibuzzard-673FB8F9 | kibuzzard-673FB8F9 |
| 1 | G*** | kibuzzard-6741F3EA | kibuzzard-6741F3EA |
| 1 | G*** | kibuzzard-679FFD7E | kibuzzard-679FFD7E |
| 1 | G*** | kibuzzard-67A3D3AE | kibuzzard-67A3D3AE |
| 1 | G*** | kibuzzard-673FB8E5 | kibuzzard-673FB8E5 |
| 1 | G*** | kibuzzard-673FB8EB | kibuzzard-673FB8EB |
| 1 | G*** | kibuzzard-673FB8F2 | kibuzzard-673FB8F2 |
| 1 | LMV331 | Package_TO_SOT_SMD:SOT-23-5 | U72 |
| 1 | RCA Left | Connector_RCA:RCA_Vertical | J2 |
| 1 | RCA Right | Connector_RCA:RCA_Vertical | J3 |
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Questions
How big is the SCART switcher PCB?
It measures 255 × 127 mm and has 4 copper layers, 1.61 mm thick.
What parts does the SCART switcher use?
613 parts, built around the OPA1656ID, OPA4354AID, SN74LVC1G3157DCKR and SN74LVC1G08DCKR. 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 SCART switcher KiCad files?
From the nunosousa/SCART-switcher repository on GitHub, at the commit this page was made from: the board is ECAD/SCART_switcher/SCART_switcher.kicad_pcb and its schematic ECAD/Power_supply/Power_supply.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SCART switcher design in my own project?
Its repository states no licence, so its author keeps all rights: ask nunosousa before reusing the design.