Optocouplers provide 800V off-state voltage, boost robustness

VISHAY INTERTECHNOLOGY VOT8024AM and VOT8121AM optocouplers provide a phototriac output in a compact flat SOP-4 package. Devices deliver high off-state voltage of 800V and dV/dt of 1000V/μs, as well as high robustness and noise isolation. Devices isolate low voltage logic from 120Vac, 240Vac, and 380Vac 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 either 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.