The G12181-205K from Hamamatsu Photonics is a Photodiode with Wavelength Range 0.9 to 1.85 µm, Capacitance 60 to 150 pF, Dark Current 0.15 to 1.5 nA, Responsivity/Photosensitivity 0.9 to 1.1 A/W, Active Area Diameter 0.5 mm. More details for G12181-205K can be seen below.
