The LTH-301-27P1 from LITE-ON is a Photointerrupter with Power Dissipation 75 mW (Input), 100 mW (Output), Fall Time 10 µs, Collector Current 40 mA, Collector-Dark Current 100 nA, Collector-Emitter Voltage(Vce) 30 V. More details for LTH-301-27P1 can be seen below.