The G12180-030A from Hamamatsu Photonics is a Photodiode with Wavelength Range 0.9 to 1.7 µm, Capacitance 450 to 1500 pF, Dark Current 2.5 to 12.5 nA, Responsivity/Photosensitivity 0.8 to 1.1 A/W, Active Area Diameter 3 mm. More details for G12180-030A can be seen below.