The SFH600 is an optocoupler with a GaAs LED emitterwhich is optically coupled with a silicon planar phototransistordetector. The component is packaged in aplastic plug-in case, 20 AB DIN 41866.The coupler transmits signals between two electricallyisolated circuits. The potential differencebetween the circuits to be coupled is not allowed toexceed the maximum permissible insulating voltage.