Vishay Intertechnology VO3052, VO3053: Phototriac optocouplers provide a 600V blocking voltage

Able to isolate low-voltage logic from 380V-ac voltages, the VO3052 and VO3053 phototriac optocouplers feature a 600V blocking voltage allowing isolation between dc and ac voltages on 120 and 240V-ac lines. This isolation provides a twofold increase in safety for control of off-line voltages as high as 240V. The devices feature a GaAs (gallium-arsenide) infrared LED optically coupled to a monolithic, photosensitive, zero-crossing triac-detector chip. A low input current provides an easy interface with microcontrollers and digital logic. The VO3052 requires a 10-mA maximum trigger current, and the VO3053 requires a 5-mA maximum trigger current. These nonzero-crossing 1.5-kV/µsec dV/dt devices replace standard 1-kV/µsec dV/dt phototriacs and companion devices to the vendor’s zero-crossing 1.5-kV/µsec dV/dt devices. The VO3052 and VO3053 phototriac optocouplers are available in DIP-6 packages, and prices range from 50 to 61 cents (10,000), depending on blocking voltage and trigger-current values.

Vishay Intertechnology, www.vishay.com