Vishay, SFH617A-1X007T Phototransistor Output Optocoupler, Surface Mount, 4-Pin SMD

The Vishay feature a high current transfer ratio, low coupling capacitance and high isolation voltage. These couplers have a GaAs infrared diode emitter, which is optically coupled to a silicon planar phototransistor detector and is incorporated in a plastic DIP-4 package. The coupling devices are designed for signal transmission between two electrically separated circuits.

Operating temperature from -55 °C to +110 °C
Good CTR linearity depending on forward current
Low saturation voltage
Fast switching times
Low CTR degradation
Temperature stable