The S13954-01CT from Hamamatsu Photonics is a Photodiode with Wavelength Range 320 to 1000 nm, Capacitance 13 to 25 pF, Dark Current 0.01 to 1 nA, Responsivity/Photosensitivity 0.4 to 0.5 A/W, Active Area Diameter 1.5 mm. More details for S13954-01CT can be seen below.
