The TCST1103 is a transmissive sensor that include an infrared emitter and phototransistor,located face-to-face on the optical axes in a leaded packagewhich blocks visible light.Emitter:Forward Current: 60mA max.Forward Voltage: 1.25V @ 60mAOutput:Vceo: 70VIc peak: 200mACTR: 20% typ.Collector Curren..