The PL-1100-SI-AR4-FSA from LD-PD Inc is a Photodiode with Wavelength Range 0.4 to 1.1 µm, Capacitance 0.5 to 500 pF, Dark Current 1 to 40 nA, Responsivity/Photosensitivity 0.2 to 0.38 A/W, Active Area Diameter 0.2 to 4 mm. More details for PL-1100-SI-AR4-FSA can be seen below.