2 layers100 × 150 mm
4 layers100 × 100 mm
InputSwitch
smileym4n-collab/Kicadprojects- Size
- 100 × 100 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 109
- Nets
- 78
- Pads
- 297
- Tracks, vias
- 369, 237
- Pours
- 34
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 4 Aug 2026
- Updated
- 6 Nov 2026
Overview
InputSwitch is an open-source printed circuit board by smileym4n-collab, from the smileym4n-collab/Kicadprojects repository on GitHub. It is a 4-layer board of 100 × 100 mm with 109 parts on 78 nets, routed with 369 tracks and 237 vias.
It is built around the ATTINY412-SSN, SPU03L-05 and R-78K5.0-2.0, with the LM358N, ULN2003A and VO617A-3 among its other parts. Its parts include 42 resistors, 23 capacitors, 13 connectors, 11 ICs and 6 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
11
ATTINY412-SSN
SOIC-8-40℃~+105℃ 1.8V~5.5V 10bit 128Byte 20MHz 256Byte 4KB 6 8 Bit 8bit AVR Built-in FLASH SOIC-8 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
SPU03L-05
SIP,19.6x7.5mm1 3W 3kV 4.5V~5.5V 5V 600mA 82% SIP,19.6x7.5mm Power Module/Power Supply ROHSMWIsolated Power Modules
R-78K5.0-2.0
SIP,11.5x8.5mm1 2A 5V 6.5V~36V 85% SIP,11.5x8.5mm Isolated Power Modules ROHSRECOM PowerIsolated Power Modules
LM358N
DIP-8-18V~18V 0℃~+70℃ 1.2MHz 10nA 2 30mA 3V~36V 50nA 7mV 800uA 80dB Built-in compensation DIP-8 Operational Amplifier ROHSHGSEMIOperational Amplifier
ULN2003A
SOP-16-40℃~+85℃ 0.93mA 100uA 15pF 20uA 30V 50V Seven channels SOP-16 Darlington Transistor Arrays ROHSUMWDarlington Transistor Arrays
VO617A-3
DIP-4-55℃~+110℃ 1 1.35V 100% 15us 200% 200mW 250mV@5mA,1mA 4.6us 5.3kV 50mA 60mA 6V 80V AC,DC Phototransistor DIP-4 Transistor, Photovoltaic Output Optoisolators ROHSVishay IntertechnologyTransistor, Photovoltaic Output Optoisolators
SN74LVC1G04DBV
SOT-23-5-40℃~+125℃ 1 1 1.65V~5.5V 1.7V~2V 10uA 2.4V 3.7ns@5V,50pF 32mA 32mA 400mV 700mV~800mV 74LVC 电源关断保护 SOT-23-5 Inverters ROHSTexas InstrumentsInverters
CL31A226KAHNNNE
120622uF 25V X5R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
1239AS-H-4R7M=P2
10081.3A 1.5A 240mΩ 4.7uH ±20% 1008 Power Inductors ROHSMurataPower Inductors
SMBJ13A
DO-214AA(SMB)-55℃~+150℃ 13V 15.9V 21.5V 27.91A@10/1000us 5uA 600W@10/1000us IEC 61000-4-2 TVS Unidirectional DO-214AA(SMB) ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD 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
Parts
109| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R9, R11, R12, R24, R25, R28, R31, R44, R45, R48, R51 |
| 7 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R26, R33, R34, R46, R53, R54 |
| 6 | 100nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C4, C5, C7, C9, C22, C42 |
| 5 | 47K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3, R4, R5, R10 |
| 4 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D21, D22, D41, D42 |
| 4 | 33uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C23, C25, C43, C45 |
| 4 | 4K7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R8, R30, R50 |
| 4 | M4 | MountingHole:MountingHole_4.3mm_M4 | H1, H2, H3, H4 |
| 3 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C10, C20, C40 |
| 3 | 47uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3, C21, C41 |
| 3 | G6K-2P-Y DC5 | Relay_THT:Relay_DPDT_Omron_G6K-2P-Y | K1, K2, K3 |
| 2 | 100R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R41 |
| 2 | 100nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C24, C44 |
| 2 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R27, R47 |
| 2 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C11 |
| 2 | 2M2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R49 |
| 2 | 30R | Resistor_THT:R_Axial_DIN0617_L17.0mm_D6.0mm_P25.40mm_Horizontal | R20, R40 |
| 2 | 390R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R32, R52 |
| 2 | 3K3 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22, R42 |
| 2 | 470K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R23, R43 |
| 2 | BC549 | Package_TO_SOT_THT:TO-92_Wide | Q2, Q3 |
| 2 | LM358N | Package_DIP:DIP-8_W7.62mm_Socket | U5, U7 |
| 2 | SPU03L-05 | InputSwitch:SPU03L_05_SIP7 | U10, U11 |
| 2 | ULN2003A | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U3, U4 |
| 2 | VO617A-3 | Package_DIP:DIP-4_W7.62mm | U6, U8 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 12V POWER | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J7 |
| 1 | 1A | Fuse:Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | F2 |
| 1 | 1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6 |
| 1 | 2.2uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 1 | 4.7uH | Inductor_SMD:L_1008_2520Metric | L1 |
| 1 | ATtiny412 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | G6K-2P-Y DC5 | InputSwitch:Relay_DPDT_Omron_G6K-2P-Y_Datasheet | K4 |
| 1 | LOGO | Custom:LOGONEW | G*** |
| 1 | LOGO | Custom:cuteyeyes | G*** |
| 1 | MARANTZ L | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J2 |
| 1 | MARANTZ R | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J4 |
| 1 | Marantz LED | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J11 |
| 1 | OUT L | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J5 |
| 1 | OUT R | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J6 |
| 1 | POWER RLY | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J10 |
| 1 | PRE / COM / MTZ | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J9 |
| 1 | PREAMP L | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J1 |
| 1 | PREAMP R | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J3 |
| 1 | PreAmp LED | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J12 |
| 1 | R-78K5.0-2.0 | InputSwitch:R78B_2A_SIP3 | U1 |
| 1 | SMBJ13A | Diode_SMD:D_SMB | D2 |
| 1 | SN74LVC1G04 | Package_TO_SOT_SMD:SOT-23-5 | U9 |
| 1 | SS14 | Diode_SMD:D_SMA | D1 |
| 1 | SUB TRIGGER 12V | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J13 |
| 1 | UPDI / +5V / GND | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J8 |
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Questions
How big is the InputSwitch PCB?
It measures 100 × 100 mm and has 4 copper layers, 1.6 mm thick.
What parts does the InputSwitch use?
109 parts, built around the ATTINY412-SSN, SPU03L-05, R-78K5.0-2.0 and LM358N. 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 InputSwitch KiCad files?
From the smileym4n-collab/Kicadprojects repository on GitHub, at the commit this page was made from: the board is InputSwitch/review/fabrication-2026-10-17/source/InputSwitch.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the InputSwitch design in my own project?
Its repository states no licence, so its author keeps all rights: ask smileym4n-collab before reusing the design.