The Isocom Components 2004 LTD Optoisolator IS181D is an optocoupler designed for isolating a high input voltage and current to a low output one. This Optoisolator comes with a unique transistor output design, making it ideal for use in many applications depending on the levels of voltage and current. The IS181D is capable of switching up to 3.75 kV, with a 300% overload current of 50 mA, housed in a standard 4-pin SOP package. The device offers superior insulation as well as fast switching time and outstanding high frequency operation. Ideal for industrial automation, optical communication networks, industrial applications, and railway control, the IS181D is a reliable and efficient optocoupler for a variety of settings.