The BPW76B from Vishay Intertechnology is a Phototransistor with Collector Emitter Voltage (Breakdown) 70 V, Collector-Dark Current 1 to 100 nA, Collector Emitter Voltage(Saturation) 0.15 to 0.3 V, Power Dissipation 250 mW, Wavelength(Spectral Sensitivity) 450 to 1080 nm. More details for BPW76B can be seen below.