Power phototriac

Vishay has released an integrated power phototriac that outputs currents up to 1 A to drive resistive and inductive loads.

Offered in the 16-pin DIP package, the VO3526 consists of GaAs infrared LED that is optically coupled to a monolithic photosensitive non-zero-crossing TRIAC detector chip.

This in turn powers on an integrated power TRIAC. By eliminating the need for an external power TRIAC, the device cuts design costs and saves board space.

Rated at 600 V blocking voltage, the device provides isolation between DC and AC voltages on 120 and 240 VAC lines, giving designers a 2x or better safety factor. For additional safety, the device offers an input-to-output isolation voltage of 5300.

A low 10 mA input trigger current facilitates an interface with digital logic.

The device can be used as a solid-state relay. Optimised for noisy environments, typical applications for the new device will include home appliances such as air conditioners, refrigerators, dishwashers, washer/dryers, and oven ranges.