Vishay Offers Non-Zero-Crossing 1.5kV/µs dV/dt Phototriac Optocouplers for Off-Line Control of AC Voltages up to 380V
Vishay Intertechnology, Inc. announced the VO3052 and VO3053, two new non-zero-crossing 1.5kV/µs dV/dt phototriac optocouplers designed to isolate low-voltage logic from ac voltages up to 380V.
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 VO3053 requires a maximum trigger current of 5mA to latch output, while the VO3052 requires a maximum trigger current of 10mA. 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 and 240V ac lines, giving designers a 2X or better safety factor for control of off-line voltages up to 240V.
The VO3052 and VO3053 are designed for control of resistive, inductive, or capacitive loads, including motors, solenoids, high-current thyristors, and relays. Optimized for noisy environments, typical applications for the new devices include refrigerators, air conditioners (HVAC), dishwashers, vending machines, industrial controls, ac motor drives, switches, switching power supplies, and solenoid/valve controls.
The VO3052 and VO3053, in which the new "VO" part number prefix indicates "Vishay optocoupler," are direct replacements for industry-standard 1.0kV/µs dV/dt phototriacs and companion devices to Vishay's zero-crossing VO3062 and VO3063 1.5kV/µs dV/dt phototriacs.
Samples and production quantities of the new phototriacs are available now, with lead times of six to eight weeks for larger orders. Pricing for U.S. delivery in 10,000-piece quantities ranges from $0.50 to $0.61 per piece depending on the blocking voltage and trigger current values.
