Specifications: The APY225C1S is a medium-current PhotoMOS SSR in an SOP-4 package. It is a 1 Form A (SPST-NO) relay rated for 1.0A at 150V AC/DC. It features a low 0.45Ω on-state resistance, provides 2500Vrms isolation, and switches with 850μs (on) and 60μs (off) times. It operates from -40°C to 85℃ with a 1.18-1.28VDC input. Application Scenarios: A versatile relay for efficient medium-current switching. Common applications include appliance motor control, industrial actuator driving, power management in consumer electronics, LED lighting drivers, and as a solid-state replacement for mechanical relays in various AC/DC control circuits, offering reliable performance and ease of assembly in a standard SOP-4 footprint.