The Isocom Components 2004 LTD Optoisolator – Transistor, Photovoltaic Output IS181B is a mini-flat-4 optocoupler designed for noise-immune signal transmission. It provides 4 channels of electrical isolation between two circuit sections. This device is ideal for making sure that signals transmitted between these two sections are electrically isolated, while still providing reliable signal accuracy. It features a low-profile, 4-pin mini-flat-4 package that takes up minimal space. It offers a current transfer ratio of 300-400% at an input current of 5 mA. It operates at an operating temperature range of 0-70°C and an input-output isolation voltage of 5300Vrms. This optocoupler is suitable for a wide range of applications, including telecommunications, computing, industrial controls, process controls, audio systems and many more.