The G6849-01 from Hamamatsu Photonics is a Photodiode with Wavelength Range 0.9 to 1.7 µm, Capacitance 25 to 40 pF, Dark Current 0.15 to 1.5 nA, Responsivity/Photosensitivity 0.8 to 0.95 A/W, Active Area Diameter 1 mm. More details for G6849-01 can be seen below.