SCART switcher
About the SCART switcher PCB
SCART switcher is an open source PCB design by nunosousa, published on GitHub. It is a 4-layer board measuring 255 × 127 mm, with 595 components from 41 distinct parts.
Other key parts include the SN74LVC1G08DCKR, SN74LVC1G04DCKR, SN74LVC1G3157DCKR, CD4066BM96 and LM4041DIDBZT. By type, the board carries 253 resistors, 155 capacitors, 88 ICs, 49 diodes, 40 transistors and 10 connectors.
From the project
An old school SCART switcher. Its main purpose will be to automaticaly detect and switch the video output to the active input video source.
This folder contains de PCB projects for the main PCB switcher board and for a separate power supply.
Due to the size of the main switcher board, I decided to make the power circuitry in a separate board so that if there is any issue with it, I don't have to roll a new (and expensive) whole PCB with everything.
Main components on the SCART switcher
SCART switcher bill of materials (BOM)
595 components, 41 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 24 | SN74LVC1G08DCKR 74LVC1G08 | SOT-353_SC-70-5 | U2, U12, U14, U16, U18, U20, U34, U37 +16 |
| 8 | SN74LVC1G04DCKR 74LVC1G04 | SOT-353_SC-70-5 | U3, U4, U36, U39, U42, U45, U48, U51 |
| 35 | SN74LVC1G3157DCKR 74LVC1G3157 | SOT-363_SC-70-6 | U5, U6, U7, U9, U10, U60, U61, U62 +27 |
| 7 | CD4066BM96 CD4066 | SOIC-14_3.9x8.7mm_P1.27mm | U8, U35, U80, U87, U94, U101, U108 |
| 2 | LM4041DIDBZT LM4041LP-ADJ | SOT-23-3 | U29, U30 |
| 3 | OPA1656IDR OPA1656 | SOIC-8_3.9x4.9mm_P1.27mm | U31, U32, U33 |
| 2 | OPA4354AIDR OPA4354 | SOIC-14_3.9x8.7mm_P1.27mm | U71, U73 |
| 1 | LMV331IDBVR LMV331 | SOT-23-5 | U72 |
| 6 | SN74LVC1G14DCKR 74LVC1G14 | SOT-353_SC-70-5 | U137, U138, U139, U140, U141, U142 |
| 26 | BC847C,215 BC847 | SOT-23 | Q1, Q2, Q3, Q5, Q6, Q7, Q8, Q9 +18 |
| 2 | BC857C,215 BC857 | SOT-23 | Q4, Q28 |
| 12 | 2SK209-GR(TE85L,F) 2SK209 | SC-59 | Q26, Q27, Q31, Q32, Q35, Q36, Q39, Q40 +4 |
| 7 | SCART-F | SCART-F | J1, J4, J5, J6, J7, J8, J9 |
| 1 | RCA Left | RCA_Vertical | J2 |
| 1 | RCA Right | RCA_Vertical | J3 |
| 1 | CONN_01X06 Conn_01x06 | PinHeader_1x06_P2.54mm_Vertical | J14 |
| 30 | BZT52H-B6V8,115 BZT52H-B6V8 | D_SOD-123F | D1, D2, D3, D4, D5, D8, D9, D10 +22 |
| 6 | BZT52H-C3V3,115 BZT52H-C3V3 | D_SOD-123F | D6, D13, D20, D27, D34, D41 |
| 6 | 333-2SURD/S530-A3 LED | LED_D5.0mm | D7, D14, D21, D28, D35, D42 |
| 7 | BAS16H,115 BAS16H | D_SOD-123F | D71, D72, D73, D74, D75, D76, D77 |
Show 21 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 88 | CL10B104KO8NNNC 100nC | C_0603_1608Metric | C1, C2, C3, C4, C5, C6, C7, C8 +80 |
| 11 | UWT1C100MCL1GB 10uC | CP_Elec_4x5.4 | C31, C34, C38, C39, C40, C41, C42, C43 +3 |
| 12 | CC0805JRNPO9BN102 1nC | C_0805_2012Metric | C46, C47, C113, C114, C128, C129, C143, C144 +4 |
| 12 | UWT1C220MCL1GB 22uC | CP_Elec_5x5.4 | C48, C49, C115, C116, C130, C131, C145, C146 +4 |
| 24 | EEEFKJ470UAR 47uC | CP_Elec_4x5.8 | C75, C76, C80, C81, C103, C104, C108, C109 +16 |
| 4 | EEEFT1C102AP 1000uC | CP_Elec_10x10.5 | C92, C94, C99, C101 |
| 4 | GRM31C5C1H104JA01L 100nC | C_1206_3216Metric | C93, C95, C100, C102 |
| 29 | RC0805JR-0710KL 10kR | R_0805_2012Metric | R1, R6, R7, R8, R13, R19, R24, R29 +21 |
| 28 | RC0805JR-07220KL 220kR | R_0805_2012Metric | R2, R20, R25, R30, R35, R40, R84, R85 +20 |
| 27 | RC0805JR-074K7L 4k7R | R_0805_2012Metric | R3, R4, R14, R21, R22, R26, R27, R31 +19 |
| 6 | RC0805FR-07300RL 300R | R_0805_2012Metric | R5, R23, R28, R33, R38, R43 |
| 44 | RC0805JR-07100KL 100kR | R_0805_2012Metric | R9, R11, R12, R15, R16, R17, R18, R101 +36 |
| 18 | RT0805FRD07100RL 100R | R_0805_2012Metric | R10, R88, R89, R90, R91, R97, R98, R129 +10 |
| 37 | RT0805BRD071KL 1kR | R_0805_2012Metric | R44, R65, R68, R70, R73, R110, R111, R117 +29 |
| 1 | PTFR0805B976RP9 976R | R_0805_2012Metric | R64 |
| 1 | PTFR0805B523RP9 523R | R_0805_2012Metric | R67 |
| 1 | PTFR0805B374RP9 374R | R_0805_2012Metric | R69 |
| 1 | PTFR0805B681RP9 681R | R_0805_2012Metric | R72 |
| 22 | RT0805BRD0720KL 20kR | R_0805_2012Metric | R74, R75, R76, R77, R78, R79, R80, R81 +14 |
| 34 | AC1210FR-0775RL 75R | R_1210_3225Metric | R105, R106, R109, R113, R114, R130, R131, R138 +26 |
| 4 | RT0805BRE072KL 2kR | R_0805_2012Metric | R125, R126, R136, R137 |
SCART switcher design files
The KiCad project lives in the nunosousa/SCART-switcher repository on GitHub; these links point at the commit this page was built from.
SCART switcher: common questions
How big is the SCART switcher PCB?
The SCART switcher measures 255 × 127 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the SCART switcher?
595 components, from 41 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the SCART switcher design files?
From the nunosousa/SCART-switcher repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the SCART switcher design in my own project?
The repository has no license, so all rights stay with nunosousa. Use it as a reference, and ask the author before reusing the design.
