Features:Focusedandnon‐focusedop􀆟callightpa􀆩ernEnhancedtemperaturerangeTO‐46herme􀆟callysealedpackageMechanicallyandspectrallymatchedtootherOptekdevicesChoiceofpowerrangesChoiceofnarroworwideirradiancepa􀆩ernDescrip􀆟on:Eachdeviceinthisseriesisagalliumaluminumarsenide(GaAIAs)infraredemi􀆫ngdiode,mountedinaherme􀆟cmetalTO‐46housing.Thegalliumaluminumarsenidefeatureprovidesahigherradiatedoutputthangalliumarsenideatthesameforwardcurrent.EachOP231,OP232,OP233,OP234andOP235deviceislensedtoprovideanarrowbeamangle(18°)betweenhalfpowerpoints.The890nmw***elengthcloselymatchesthespectralresp***eofsiliconphototransistors,whilethenarrowbeamangle–combinedwiththespecifiedradiantintensityoftheOP231series–facilitateseasydesigninbeaminterruptapplica􀆟***inconjunc􀆟onwiththeOP800orOP598seriesphotosensors.TheOP231seriesismechanicallyandspectrallymatchedtoOP800,OP593andOP598phototransistors.EachOP231W,OP232W,OP233W,OP234WandOP235Wdeviceislensedtoprovideawidebeamangle(50°)betweenhalfpowerpoints.The890nmw***elengthcloselymatchesthespectralresp***eofsiliconphoto‐ransistors,whilethewidebeamangleprovidesrela􀆟velyevenillumina􀆟onoveralargearea.TheOP231WismechanicallyandspectrallymatchedtotheOP800WSLandOP830SLseriesdevices.PleaserefertoApplica􀆟onBulle􀆟ns208and210foraddi􀆟onaldesigninforma􀆟onandreliability(degrada􀆟on)data.)