The AP1608P1C from kingbrightusa is a Phototransistor with Collector Emitter Voltage (Breakdown) 30 V, Collector-Dark Current 100 nA, Emitter Collector Voltage(Breakdown) 5 V, On-State Collector Current 0.1 to 0.3 mA, Power Dissipation 100 mW. More details for AP1608P1C can be seen below.