Specifications: The APW221E is a dual-channel (2 Form A) PhotoMOS SSR in a DIP-8 package. Each SPST-NO channel is rated for 250mA at 60V AC/DC, with a 3.5惟 on-state resistance. It offers 5000Vrms isolation and features 100渭s (on) and 350渭s (off) switching times. It operates from -40掳C to 85掳C with a 1.1-1.5VDC input. Application Scenarios: A versatile dual-channel relay for general-purpose, low-to-medium current switching. Suitable for driving two independent loads like indicators, small relays, or sensors in industrial control panels, test equipment, and prototyping boards. Its balanced performance and through-hole package make it a reliable choice for educational setups, legacy system upgrades, and applications requiring easy servicing.