4 layers73.9 × 43 mm
4 layers73.9 × 43 mm
OPC V3
npfs666/OPC_PCB- Size
- 73.9 × 43 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 92
- Pads
- 311
- Tracks, vias
- 658, 123
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Aug 2026
- Updated
- 3 Nov 2026
Overview
OPC V3 is an open-source printed circuit board by npfs666, from the npfs666/OPC_PCB repository on GitHub. It is a 4-layer board of 73.9 × 43 mm with 56 parts on 92 nets, routed with 658 tracks and 123 vias.
It is built around the ADG7421FBCPZ-RL7, TS3A4751PWR and DS3231MZ+TRL, with the FM24CL16B-G, MCP23017-E/ML and WA06X103JTL among its other parts. Its parts include 14 resistors, 12 capacitors, 10 ICs, 4 connectors and 2 diodes. It belongs with the RP2040 boards of this library.
Main components
11
ADG7421FBCPZ-RL7
LFCSP-10(2x3)-2.5V~-1.8V、1.8V~5.5V、1.8V~2.5V -40℃~+125℃ 12Ω 13pF 1:1 2 4.2us 5.2us 580MHz LFCSP-10(2x3) Analog Switches, Multiplexers ROHSAnalog DevicesAnalog Switches, Multiplexers
TS3A4751PWR
TSSOP-14-40℃~+85℃ 1.6V~3.6V 125MHz 1:1 43pF 4ns 5ns 900mΩ TSSOP-14 Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
DS3231MZ+TRL
SOIC-8-40℃~+85℃ 100nA 2.3V~5.5V 200uA Built-in I2C Temperature compensation、Backup power management and battery charging、Alarm function、Periodic interrupt output Yes SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time ClocksFM24CL16B-G
SOIC-8-40℃~+85℃ 100,000,000,000,000 Cycles 151 Years 16Kbit 1MHz 2.7V~3.65V 300uA 6uA I2C SOIC-8 FRAM ROHSInfineon TechnologiesFRAM
MCP23017-E/ML
QFN-28-EP(6x6)-40℃~+125℃ 1.7MHz 1.8V~5.5V 16 1uA 600mV 8 8mA I2C Interrupt Output Reset function、Cascading and address extension QFN-28-EP(6x6) I/O Expanders ROHSMicrochip TechnologyI/O Expanders
WA06X103JTL
0603x4100mW 10kΩ 4 8 ±200ppm/℃ ±5% 0603x4 Resistor Networks, Arrays ROHSWalsin TechnologyResistor Networks & Arrays
ERA-6ARB332V
0805-55℃~+155℃ 100V 125mW 3.3kΩ Thin Film Resistor ±0.1% ±10ppm/℃ 0805 Chip Resistor - Surface Mount ROHSPanasonicChip Resistor - Surface Mount
ERA-3AEB5231V
0603-55℃~+155℃ 100mW 5.23kΩ 75V Thin Film Resistor ±0.1% ±25ppm/℃ 0603 Chip Resistor - Surface Mount ROHSPanasonicChip Resistor - Surface MountERA-3AED6041V
0603Chip Resistor - Surface MountPanasonicERA-6ARB1652V
0805Chip Resistor - Surface MountPanasonicMEC1-110-02-F-D-A
SMD,P=1mm-55℃~+125℃ 1mm 20P Beryllium copper Gold Surface Mount,Vertical SMD,P=1mm Edgeboard Connectors ROHSSamtecEdgeboard Connectors
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1µ 10V | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12 |
| 5 | 47 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R10, R11, R12, R13 |
| 4 | 4.7n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | CCM1, CCM2, CCM3, CCM4 |
| 4 | ADG7421FBCPZ-RL7 | OPC:CP-10-16_ADI | U1, U2, U3, U4 |
| 3 | 10k | Resistor_SMD:R_Array_Concave_4x0603 | RN1, RN2, RN3 |
| 2 | 1725672 | OPC:1725672 | J3, J4 |
| 2 | 1M | Resistor_SMD:R_0805_2012Metric | R4, R5 |
| 2 | 3k3 | Resistor_SMD:R_0805_2012Metric | R1, R3 |
| 2 | 47n | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | CDi1, CDi2 |
| 2 | 4k7 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7 |
| 2 | 5.23k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | RF1, RF2 |
| 2 | 6.04k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | RF3, RF4 |
| 2 | D_Schottky | Diode_SMD:D_SMA | D1, D2 |
| 2 | TS3A4751PWR | OPC:TSSOP-14_4.4x5mm_P0.65mm | U6, U7 |
| 1 | 0.47 | Capacitor_THT:CP_Radial_D13.0mm_P5.00mm | C1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R14 |
| 1 | 16k5 | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8 |
| 1 | ADS1120-PW | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U9 |
| 1 | DS3231MZ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | Debug port | PCM_4ms_Connector:Pins_1x06_P2.54mm_Horizontal_TH | J2 |
| 1 | FM24CL16B | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | MCP23017x-x-ML | Package_DFN_QFN:QFN-28-1EP_6x6mm_P0.65mm_EP4.25x4.25mm | U10 |
| 1 | MEC1-110-02-F-D-A | OPC:MEC1-110-02-F-D-A-MALE | J1 |
| 1 | RaspberryPi_Pico | OPC:RaspberryPi_Pico_Common_THT_SIMPLE_DEBUG | A1 |
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Questions
How big is the OPC V3 PCB?
It measures 73.9 × 43 mm and has 4 copper layers, 1.6 mm thick.
What parts does the OPC V3 use?
56 parts, built around the ADG7421FBCPZ-RL7, TS3A4751PWR, DS3231MZ+TRL and FM24CL16B-G. 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 OPC V3 KiCad files?
From the npfs666/OPC_PCB repository on GitHub, at the commit this page was made from: the board is OPC V3.kicad_pcb and its schematic OPC V3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the OPC V3 design in my own project?
Its repository states no licence, so its author keeps all rights: ask npfs666 before reusing the design.