Vishay, SFH6186-2 Phototransistor Output Optocoupler, Surface Mount, 4-Pin SMD

The Vishay SFH6186 coupler have a GaAs infrared diode emitter, which is optically coupled to silicon planar phototransistor detector, and is incorporated in a plastic DIP-4 or SMD package. The coupling devices are designed for signal transmission between two electrically separated circuits.

Good CTR linearity depending on forward current
Low CTR degradation
Low coupling capacitance