The OED-ST-44F from Lumex is a Phototransistor with Collector Emitter Voltage (Breakdown) 70 V, Collector-Dark Current 400 nA, Collector Emitter Voltage(Saturation) 0.3 V, Emitter Collector Voltage(Breakdown) 5 V, Power Dissipation 200 mW. More details for OED-ST-44F can be seen below.