Specifications: The APY211G3E is a high-current PhotoMOS SSR in a compact DIP-4 package. This 1 Form A (SPST-NO) device is rated for 2.5A load current and 40V load voltage (AC/DC). It boasts an ultra-low 55mΩ on-state resistance, minimizing conduction losses and heat generation. It offers 5000Vrms isolation and features fast switching with 800μs turn-on and a very quick 20μs turn-off time. It operates from -40°C to 85°C with a 1.2-1.4VDC input. Application Scenarios: Designed for applications requiring high-current switching with excellent isolation. It is ideal for driving solenoids, contactors, small DC motors, and high-power LEDs in industrial automation, power management systems (e.g., battery disconnect, UPS), automotive control modules (e.g., window lifters, fan control), and test equipment. The DIP package is suitable for through-hole assembly in power stages.