Vishay’s New Non-Zero-Crossing 1.5-kV/µs dV/dt Phototriac Optocouplers Provide Off-Line Control (2)

Vishay's New Non-Zero-Crossing 1.5-kV/µs dV/dt Phototriac Optocouplers Provide Off-Line Control of AC Voltages up to 380 V

Vishay Intertechnology, Inc. today announced the VO3052 and VO3053, two new non-zero-crossing 1.5-kV/µs dV/dt phototriac optocouplers designed to isolate low-voltage logic from AC voltages up to 380 V.

MALVERN, Pa. – December 20, 2006 – Vishay Intertechnology, Inc. (NYSE: VSH) today announced the VO3052 and VO3053, two new 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. A low-input trigger current facilitates an easy interface with microcontrollers and digital logic.

The devices are 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, giving designers a 2X or better safety factor for control of off-line voltages up to 240 V.