AQH2223 datasheet, circuit diagram & equivalent

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AQH2223 pinout

The AQH2223 is a solid-state relay (SSR) featuring an optically isolated triac output with a built-in zero-cross detection circuit. It is primarily used for switching AC loads with low-noise operation. The following table provides a detailed pinout overview to guide proper integration in circuit designs.

Understanding the AQH2223 pin configuration is essential for ensuring reliable and efficient switching performance in AC applications. By correctly wiring the input and output pins, users can leverage its isolation and zero-crossing functionality for enhanced safety and EMI reduction.

FAQ

1. How does the zero-cross circuit in AQH2223 work?

The zero-cross circuit ensures that the triac switches on only when the AC voltage waveform is near zero volts. This minimizes electrical noise and inrush current, extending the life of connected loads and improving EMI performance.

2.What are the input control voltage requirements for AQH2223?

The input side operates an internal LED, typically requiring a forward voltage of around 1.2V and a current between 10–20mA for proper activation. A current-limiting resistor is often required in series.

3. Can AQH2223 be used with DC loads?

No, the AQH2223 is designed specifically for AC loads. Its internal triac structure and zero-crossing function are optimized for AC operation only and will not function correctly with DC power.

4. What is the isolation voltage of AQH2223?

The AQH2223 provides an input-to-output isolation voltage of approximately 5,000 Vrms, ensuring strong electrical separation between the control side and the load side for safety and signal integrity.