The S4111-16Q from Hamamatsu Photonics is a Photodiode with Wavelength Range 190 to 1100 nm, Capacitance 50 to 200 pF, Dark Current 5 to 25 pA, Responsivity/Photosensitivity 0.08 to 0.58 A/W, Rise Time 0.1 to 0.5 µs. More details for S4111-16Q can be seen below.