The Vishay Optocoupler has a GaAs infrared emitting diode emitter, which is optically coupled to a silicon planar phototransistor detector, and is incorporated in a plastic DIP-6 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.Isolation test voltage, 5000 VRMSLow coupling capacitanceHigh common mode transient immunityStorage temperature, -55 ° to +150 °C