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Random-phase Triac driver optocouplers

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FAIRCHILD Semiconductor, represented by Arrow , has expanded its family of random-phase triac driver optocouplers with the introduction of nine new products in four-pin, mini-flat packages (MFP).

The new products provide designers flexibility and space-savings in industrial and consumer applications.

The triac drivers offer designers a choice of three peak blocking voltages (250, 400, or 600V) and three trigger current options (5, 10 or 15mA) that can be tailored to application needs.

These compact, MFP-packaged products also feature a high, steady-state isolation voltage of 3750Vrms, full pitch (2.54mm) lead spacing, as well as a 2.4mm maximum standoff height, suitable for small footprint, low-profile designs.

Fairchild's random-phase triac driver optocouplers consist of an infrared LED that is optically coupled to a silicon bilateral switch.

The optocouplers have been designed to drive power triacs, such as Fairchild's family of 800V triacs, which are used in applications including ac motor drives and starters, static ac power switches, temperature and solenoid/valve controls and solid state relays.

Random-phase triac driver optocouplers allow the power triac to be triggered at any point on the ac voltage waveform making them suitable for phase control applications. All the new Fairchild random phase triac drivers are UL approved (BSI, CSA and VDE pending).

The products are applicable for IR reflow soldering profiles of 230°C max for 30s. The devices are available in tape and reel quantities of 500 and 2500 units.

This portfolio of triac drivers expands Fairchild's motor solutions including IGBTs, Smart Power Modules (SPMT), rectifiers, and PFC controllers.

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