The G12182-005K from Hamamatsu Photonics is a Photodiode with Wavelength Range 0.9 to 2.1 µm, Capacitance 70 to 150 pF, Dark Current 20 to 200 nA, Responsivity/Photosensitivity 1 to 1.2 A/W, Active Area Diameter 0.5 mm. More details for G12182-005K can be seen below.