Specifications: The APY225CS is a medium-current PhotoMOS SSR in an SOP-4 package. It is a 1 Form A (SPST-NO) relay rated for 750mA at 150V AC/DC. It features a low 0.5Ω on-state resistance, provides 2500Vrms isolation, and switches with 650μs (on) and 60μs (off) times. It operates from -40°C to 85℃ with a 1.14-1.24VDC input. Application Scenarios: Designed for efficient switching of medium-power loads. Suitable for driving small motors, solenoids, and heaters in appliances, HVAC controls, industrial I/O modules, and power management circuits. Its low on-resistance and standard package make it a cost-effective and reliable choice for a wide range of control applications.