The Avago ASSR-1218, ASSR-1219, and ASSR-1228 solid‑state relays are photomosfet devices with 60 V rating, low input current, high isolation, and multiple…
The ASSR‑12XX series are solid‑state relays that use an AlGaAs infrared LED input optically coupled to a high‑voltage photovoltaic detector and MOSFET output stage. The relay activates with a minimum input current of 3 mA and turns off with an input voltage of 0.8 V or less. Single‑channel versions (ASSR‑1218, ASSR‑1219) replace one Form A electromechanical relay, while the dual‑channel ASSR‑1228 replaces two.
These devices are offered in 4‑pin SO, 6‑pin DIP, 8‑pin DIP, and Gull‑Wing surface‑mount packages. They are UL‑ and CSA‑approved for 3750 Vrms isolation, operate from –40 °C to 85 °C, and provide 0.2 A (0.4 A for DC‑only) output current with low on‑resistance (typical 0.25 Ω). Typical applications include telecommunications, data communications, industrial controls, medical equipment, and security systems.