The G12180-230A from Hamamatsu Photonics is a Photodiode with Wavelength Range 0.9 to 1.65 µm, Capacitance 450 to 1500 pF, Dark Current 0.07 to 0.35 nA, Responsivity/Photosensitivity 0.8 to 1.1 A/W, Active Area Diameter 3 mm. More details for G12180-230A can be seen below.