In order to protect these photodiodes from damage, they are packaged in the Bulk. It is necessary to place the photodiodes into Radial packages in order to protect them from damage. A continuous reverse-bias mode can only sustain 75V voltage per photodiode. Continuously reverse-bias the photodiodes shouldn't exceed 75V. For photodiodes to work, breakdown voltage should be 50V. Without light, a photodiode has 300pA current.