The G12182-230K from Hamamatsu Photonics is a Photodiode with Wavelength Range 0.9 to 2.05 µm, Capacitance 1700 to 3000 pF, Dark Current 50 to 500 nA, Responsivity/Photosensitivity 1 to 1.2 A/W, Active Area Diameter 3 mm. More details for G12182-230K can be seen below.