New photorelays with low trigger current

Toshiba Electronics Europe has launched two new photorelays, the TLP170AM and TLP170GM, housed in a small four-pin SO6 package, aimed at security systems, building automation and other industrial equipment.

The new products give a low trigger LED current of 1mA, which decreases input side power loss by increasing the sensitivity of the photodiode array. Employing these photorelays for ON/OFF control in battery-powered security devices and various sensors, adds to lower power consumption and longer operating life.

The device has a rated off-state output terminal voltage (Voff) of 60V. It features a typ. on-state resistance (Ron) of 0.15Ohm and constant on-state current (Ion) of 0.7A, with pulse operation of up to 2.1A. The device is a 350V version with a typ. Ron of 28Ohm, and Ion of 110mA constant current and 330mA pulse operation. Both devices have a rated operating temperature between -40C and 85C, to provide for a temperature margin in system-level thermal design.

The four-pin SO6 package provides a minimum isolation voltage of 3750Vrms, enabling the devices to be employed in equipment needing high insulation performance.