CQY80N/CQY80NG is an optocoupler from Vishay Semiconductors, which has UL94-VO grade insulation material, low coupling capacity, high common mode rejection, 55/100/21 climate classification, low temperature coefficient, 6 kV peak transient overvoltage, 1.6 kV insulation voltage, 600 VRMS of insulation voltage, 600 VRMS of recurring peak voltage, 0.75 mm of insulation thickness, and meets RoHS 2002/95/EC and WEEE 2002/96/EC regulations