Vishay broadens its optoelectronics portfolio with the release of two optocouplers with a phototriac output in the compact flat SOP-4 package. Featuring high off-state voltage of 800 V and dv/dt of 1000 V/μs, the Vishay Semiconductors VOT8024AM and VOT8121AM deliver high robustness and noise isolation for home appliances and industrial equipment.

These optocouplers isolate low voltage logic from 120 V_AC, 240 V_AC, and 380 V_AC lines to control resistive, inductive, or capacitive loads, including motors, solenoids, high current thyristors, or TRIACs and relays.

Reducing design costs and saving board space, the devices consist of a GaAs infrared LED optically coupled to a zero crossing TRIAC (VOT8024AM) for EMI reduction without the need for external snubber networks, or a random-phase TRIAC (VOT8121AM) to enable phase-independent switching.

They have low trigger currents, which facilitate an easy interface with digital logic, and high off-state voltage enhances safety margins in one-phase applications, while still maintaining enough voltage headroom for three-phase applications. They also have a high withstanding isolation voltage, which provides additional safety.