The LTH-1550-01 from LITE-ON is a Photointerrupter with Power Dissipation 90 mW (Input), 100 mW (Output), Collector Current 20 mA, Collector-Dark Current 100 nA, Collector-Emitter Voltage(Vce) 30 V, Forward Voltage 1.2 to 1.6 V. More details for LTH-1550-01 can be seen below.