The S16453-50K from Hamamatsu Photonics is a Photodiode with Wavelength Range 320 to 1000 nm, Capacitance 55 pF, Dark Current 3 to 35 nA, Responsivity/Photosensitivity 0.3 A/W, Active Area Diameter 5 mm (Photosensitive). More details for S16453-50K can be seen below.