2 layers67.1 × 57.9 mm
2 layers85.6 × 51.6 mm
REG1-App OneWire
MarcoLanghans/REG1-App-OneWireOpenKNX REG1 OneWire Extension
- Size
- 85.6 × 51.6 mm
- Copper layers
- 2
- Thickness
- 0.8 mm
- Parts
- 33
- Nets
- 29
- Pads
- 110
- Tracks, vias
- 288, 34
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 Dec 2025
- Updated
- 6 Jan 2026
Overview
REG1-App OneWire is an open-source printed circuit board by MarcoLanghans, from the MarcoLanghans/REG1-App-OneWire repository on GitHub. It is a 2-layer board of 85.6 × 51.6 mm with 33 parts on 29 nets, routed with 288 tracks and 34 vias.
It is built around the CA-IS3643HVW, DS2484R+T and CA-IS3020G, with the MIC2090-2YM5-TR, 0603WAF1002 and CL05A106MQ5NUN among its other parts. Its parts include 12 resistors, 10 capacitors, 4 ICs, 3 diodes and 3 connectors.
Main components
12
CA-IS3643HVW
SOIC-16-300mil-40℃~+125℃ 1 100Mbps 150kV/us 3 3.3V、5V 3V~5.5V 4 5000 Fail-safe output、Multi-voltage domain interface High Level SOIC-16-300mil Digital Isolators (with Power) ROHSChipanalogDigital Isolators (With Power)
DS2484R+T
SOT-23-6-40℃~+85℃ 1.71V~5.25V 300uA I2C SOT-23-6 Interface - Specialized ROHSMaxim Integrated (Analog Devices)Interface - Specialized
CA-IS3020G
SOIC-8-WB-40℃~+125℃ 150kV/us 5000 Bidirectional SOIC-8-WB I2C Isolators ROHSChipanalogI2C Isolators
MIC2090-2YM5-TR
SOT-23-5-40℃~+125℃ 1 1.8V~5.5V 50mA 700mΩ Active High High Side Switch Undervoltage Protection(UVP)、Overcurrent Protection(OCP)、Overtemperature protection (OTP) SOT-23-5 Power Distribution Switches ROHSMicrochip TechnologyPower Distribution Switches
0603WAF1002
0603-55℃~+155℃ 100mW 10kΩ 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSUNI-ROYALChip Resistor - Surface Mount
CL05A106MQ5NUN
040210uF 6.3V X5R ±20% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT0603WAF1000
0603-55℃~+155℃ 100mW 100Ω 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSUNI-ROYALChip Resistor - Surface Mount0603WAF4700
0603-55℃~+155℃ 100mW 470Ω 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSUNI-ROYALChip Resistor - Surface Mount0603WAF8200
0603-55℃~+155℃ 100mW 75V 820Ω Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSUNI-ROYALChip Resistor - Surface Mount
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes
DS9503P+T
TSOC-6-40℃~+85℃ 1 2A 30nA 40pF 5.5V ESD Unidirectional TSOC-6 ESD and Surge Protection (TVS/ESD) ROHSAnalog DevicesESD And Surge Protection (TVS/ESD)
SM05C
SOT-23-55℃~+150℃ 10pF 10uA 17A 18V 2 350W 5V 6V Bidirectional ESD IEC 61000-4-2、IEC 61000-4-4 SOT-23 ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)
README
README.mdOnewire Extension Card for OpenKNX REG1 BASE Device https://openknx.atlassian.net/wiki/spaces/OpenKNX/pages/7667822/OpenKNX+REG1+Basismodul (But you need the Case of the Universal Extension Version)
The Extension Card is no official created OpenKNX Hardware, so the usage is your personal risk.
But it runs now since several days inside my person lab without any issues.
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R3, R5, R6, R11, R12 |
| 4 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C5, C6, C10 |
| 4 | 10uF/6.3V | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C7 |
| 2 | 0,1uF | Capacitor_SMD:C_0402_1005Metric | C8, C9 |
| 2 | 100 | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | 470 | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | 820 | Resistor_SMD:R_0603_1608Metric | R2, R4 |
| 1 | 1N5819WS | Diode_SMD:D_SOD-323 | D2 |
| 1 | CA-IS3020G | EasyEdaLibary:CA-IS3020G (C5156914) | U5 |
| 1 | CA-IS3643HVW | EasyEdaLibary:CA-IS3643HVW (C7422549) | U4 |
| 1 | Conn_01x04 | Connector_Phoenix_MC:PhoenixContact_MC_1,5_4-G-3.5_1x04_P3.50mm_Horizontal | J2 |
| 1 | Conn_01x06 | Connector_Phoenix_MC:PhoenixContact_MC_1,5_6-G-3.5_1x06_P3.50mm_Horizontal | J10 |
| 1 | DS2484R+T | EasyEdaLibary:DS2484R+T | U3 |
| 1 | DS9503P+ | EasyEdaLibary:DS9503P+ | D1 |
| 1 | ESDA5V3L | Package_TO_SOT_SMD:SOT-23-3 | D4 |
| 1 | LOGO | OpenKNX:CC-BY-NY-SA_12x4 | G* |
| 1 | MIC2090-1YM5 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | REG1_App_Connector | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Horizontal | J1 |
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Questions
How big is the REG1-App OneWire PCB?
It measures 85.6 × 51.6 mm and has 2 copper layers, 0.8 mm thick.
What parts does the REG1-App OneWire use?
33 parts, built around the CA-IS3643HVW, DS2484R+T, CA-IS3020G and MIC2090-2YM5-TR. 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 REG1-App OneWire KiCad files?
From the MarcoLanghans/REG1-App-OneWire repository on GitHub, at the commit this page was made from: the board is REG1-App-OneWire.kicad_pcb and its schematic OneWire.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the REG1-App OneWire design in my own project?
Its repository states no licence, so its author keeps all rights: ask MarcoLanghans before reusing the design.