The C30956EH from Excelitas Technologies is a Photodiode with Wavelength Range 400 to 1100 nm, Capacitance 10 to 12 pF, Dark Current 100 to 200 nA, Responsivity/Photosensitivity 2.8 to 45 A/W, Active Area Diameter 3 mm. More details for C30956EH can be seen below.
