Boardoza CPC1945Y Solid State Relay Breakout Board
The Boardoza CPC1945Y Breakout Board is built around the CPC1945Y AC Solid State Relay (SSR), providing safe, silent, and reliable switching of low-power AC loads. Thanks to its optically isolated input and zero-crossing detection structure, it enables noise-free AC switching directly from microcontroller systems. This board is ideal for applications such as multiplexers, data acquisition systems, industrial control units, electronic meters (electricity, gas, water), medical devices, security systems, I/O subsystems, and as a compact and long-lasting solid-state replacement for mechanical relays. With no mechanical contacts, it ensures long operational life and vibration-resistant performance.
Key Features
- Solid State Relay: Enables reliable AC switching with integrated zero-cross detection for clean transitions.
- Optical Isolation: Provides safe electrical separation between low-voltage control circuits and high-voltage AC loads.
- Silent Operation: No mechanical components, ensuring completely noise-free switching.
- Microcontroller Friendly: Low input current requirement allows direct control from MCU GPIO pins.
- Low EMI/RFI: Zero-cross switching significantly reduces electrical noise during operation.
Technical Specifications
- Model
- CPC1945Y
- Manufacturer
- Boardoza
- Manufacturer IC
- Littelfuse (IXYS Integrated Circuits Division)
- Functions
- AC Solid State Relay (Optically Isolated)
- Input Control Type
- DC (LED driven)
- Typical Input Current
- 5 mA
- Maximum Recommended Input Current
- 10 mA
- Output Type
- AC (Zero-Cross)
- Operating Load Voltage
- 20 – 120 Vac rms
- Load Current
- Up to 1 A rms
- Blocking Voltage
- 400 Vp
- Isolation Voltage
- 3750 Vrms (Input to Output)
- Operating Temperature
- -40°C to +85°C
- Board Dimensions
- 20mm x 40mm
Board Pinout
( J1 ) Control Input Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | CONTROL | DC Control Input (LED Anode) |
| 2 | GND | Ground (LED Cathode) |
( J2 ) AC Load Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | AC LOAD | AC Output Terminal |
| 2 | AC LOAD | AC Output Terminal |
Datasheet
Download (PDF)Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.