Vishay, VOL617A-4X001T DC Input Phototransistor Output Optocoupler, Surface Mount, 4-Pin LSOP

The Vishay optocoupler with phototransistor output has a GaAs infrared emitting diode emitter, which is optically coupled to a silicon planar phototransistor detector, and is incorporated in a 4 pin LSOP wide body package. It features a high current transfer ratio, low coupling capacitance, and high isolation voltage. The coupling device is designed for signal transmission between two electrically separated circuits.

It has high common mode transient immunity
It is compliant to RoHS directive and lead free