The G12183-220K from Hamamatsu Photonics is a Photodiode with Wavelength Range 0.9 to 2.55 µm, Capacitance 1400 to 3000 pF, Dark Current 2.1 to 21 µA, Responsivity/Photosensitivity 1 to 1.3 A/W, Active Area Diameter 2 mm. More details for G12183-220K can be seen below.