According to the datasheets, the peak forward voltage is 0.975.The maximum continuous forward current that this device consumes at any given time is about 2.5.A DC reverse voltage less than 60 must be used for operation.
GRP-A-DATA-JAN1N5802 Features
the forward peak voltage is 0.975
GRP-A-DATA-JAN1N5802 Applications
There are a lot of Microsemi GRP-A-DATA-JAN1N5802 applications of RF diodes.