The AQW214A is a compact PhotoMOS relay designed for AC/DC dual-use applications with a 400V peak load voltage rating and 100mA continuous load current capability. This 8-pin DIP package device measures 6.4 × 9.78 × 3.9 mm and features an on-resistance of 70–120 O at 5 mA input current, enabling control of low-level analog signals without distortion. The relay exhibits high sensitivity with a maximum 5 mA input current requirement, fast switching response with typical turn-on time of 0.28 ms, and extremely low off-state leakage current of maximum 1 µA. The device operates reliably across a wide temperature range of -40°C to +85°C and is ideal for high-speed inspection machines, telecommunications equipment, and computer control systems requiring precise signal switching.