The G10899-02K from Hamamatsu Photonics is a Photodiode with Wavelength Range 0.5 to 1.7 µm, Capacitance 300 to 800 pF, Dark Current 5 to 25 nA, Responsivity/Photosensitivity 0.15 to 1 A/W, Active Area Diameter 2 mm. More details for G10899-02K can be seen below.