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.

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Front Side	Back Side

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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.

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Technical Specifications

Model: CPC1945Y
Manufacturer: Boardoza
Manufacturer IC: Littelfuse (IXYS Integrated Circuits Division)
Functions: AC Solid State Relay (Optically Isolated) DC (LED driven) 5 mA 10 mA AC (Zero-Cross) 20 – 120 Vac rms Up to 1 A rms 400 Vp 3750 Vrms (Input to Output) -40°C to +85°C 20mm x 40mm