AQY210EHAX is a PhotoMOS solid-state relay featuring 1 Form A (normally open) output configuration designed for AC/DC dual-use applications. It provides reinforced insulation with 5,000 Vrms I/O isolation voltage, a load voltage rating of 350V (peak AC/DC), and continuous load current of 130mA. Key electrical characteristics include LED forward current of 50mA maximum, LED operate current of 3.0mA maximum, power dissipation of 550mW total, and operating temperature range of -40 to +85°C. The device is available in a surface mount terminal DIP4-pin package with tape and reel packing style. Typical applications include modems, telephone equipment, electricity and plant equipment, security systems, and sensing equipment where reliable low-level analog signal control is required.