Key ratings and what they mean for fit
The AQH0223: Rated for 300 mA continuous load current across 0 V to 600 V AC — this covers low-power AC switching in control circuits, PLC outputs, and auxiliary contact loops where a standard electromechanical relay would be oversized. SPST-NO (1 Form A) normally-open contact arrangement — the load circuit closes when the input LED is forward-biased; fails open if the LED drive is lost, which is the expected fail-safe for most signal isolation applications.
Package and board integration
Housed in a standard 8-DIP (0.300-inch, 7.62 mm) through-hole package with seven leads — the pinout matches the common SSR footprint used across the AQ-H family. PC pin termination suits wave-solder assembly and hand-prototyping. Supplied in tube packaging — 50 or 60 parts per tube depending on the factory batch. The tube format is convenient for manual insertion but less efficient for automated pick-and-place; if high-volume through-hole assembly is planned, confirm the tube-to-bulk transfer with your CEM.