The S16453-05K from Hamamatsu Photonics is a Photodiode with Wavelength Range 320 to 1000 nm, Capacitance 1.6 pF, Dark Current 0.2 to 1.5 nA, Responsivity/Photosensitivity 0.3 A/W, Active Area Diameter 0.5 mm (Photosensitive). More details for S16453-05K can be seen below.