Specifications: The APY211EH is a high-current, surface-mount PhotoMOS SSR in an ultra-compact SMD-4 package. This 1 Form A (SPST-NO) device is capable of switching 2.0A at 40V AC/DC. It features an ultra-low 60mΩ on-state resistance for high efficiency, 5000Vrms isolation, and switching characteristics of 800μs (on) and a very fast 20μs (off). It operates from -40°C to 85°C with a 1.2-1.4VDC input. Application Scenarios: Ideal for applications demanding high power density, efficiency, and isolation. It is used to drive solenoids, motors, and high-power LEDs in compact industrial controls, advanced driver assistance systems (ADAS) and body control modules in automotive, server and telecom power management, and high-performance consumer electronics where space and thermal management are critical.