To protect the photodiodes, they are packed in the Bulk. Photodiodes are protected by Chip with 34 Gauge BUSS Wire packages in order to ensure their safety. When reverse-bias is applied continuously, the photodiodes are able to withstand only 25V voltage. A reverse-bias photodiode shouldn't exceed 25V continuously in reverse-bias mode. A photodiode occurs even at 25nA current without light input.