Features:Flatlensedforwideacceptanceangle(OP508F)Lensedforhighsensitivity(OP509)Easilystackableon0.100”(2.54mm)holecentersInexpensiveplasticpackageMechanicallyandspectrallymatchedtoOP168andOP268seriesofinfraredemittingdiodesDescription:EachdeviceintheOP508Fseriesc***istsofaNPNsiliconphototransistormountedinaflat,blackplastic“end-looking”package.Theflatsensingsurfaceallowsanacceptancehalf-angleof60°whenmeasuredfromtheopticalaxistothehalfpowerpoint.EachdeviceintheOP509seriesc***istsofaNPNsiliconphototransistormountedinalensed,clearplastic“end-looking”package.Thelensingeffectofthepackageallowsanacceptancehalf-angleof25°whenmeasuredfromtheopticalaxistothehalfpowerpoint.OP508FandOP509seriesdevicescanbemountedon0.100”(2.54mm)holecenters,whichmakesthemanideallow-costalternatetohermeticOP600sensors.OP508FandOP509seriesdevicesaremechanicallyandspectrallymatchedtotheOP168FandOP268Fseriesofinfraredemittingdiodes.)