The S8664-30K from Hamamatsu Photonics is a Photodiode with Wavelength Range 320 to 1000 nm, Capacitance 22 pF, Dark Current 1 to 15 nA, Responsivity/Photosensitivity 0.24 A/W, Active Area Diameter 3 mm (Photosensitive). More details for S8664-30K can be seen below.