Vishay announced the VO3052 and VO3053, two non-zero-crossing 1.5-kV/μs dV/dt phototriac optocouplers designed to isolate low-voltage logic from AC voltages up to 380 V. The phototriacs consist of a GaAs infrared LED that is optically coupled to a monolithic photosensitive zero-crossing triac detector chip.

The VO3053 requires a maximum trigger current of 5 mA to latch output, while the VO3052 requires a maximum trigger current of 10 mA. The devices are offered in the 6-pin DIP package. Rated with a 600-V blocking voltage, the phototriacs can provide isolation between DC and AC voltages on 120-V and 240-V AC lines. The VO3052 and VO3053 are designed for control of resistive, inductive, or capacitive loads, including motors, solenoids, high-current thyristors, and relays.

The VO3052 and VO3053 are direct replacements for industry-standard 1.0-kV/μs dV/dt phototriacs and companion devices to Vishay’s zero-crossing VO3062 and VO3063 1.5-kV/μs dV/dt phototriacs. Samples and production quantities of the new phototriacs are available now.