According to the datasheets, the peak forward voltage is 0.875@4A volts.RF diode consumes approximately 6 in continuous forward current at any given moment.For operation, a DC reverse voltage less than 110 must be applied.
GRP-B-DATA-JANTX1N5809 Features
the forward peak voltage is 0.875@4A
GRP-B-DATA-JANTX1N5809 Applications
There are a lot of Microsemi GRP-B-DATA-JANTX1N5809 applications of RF diodes.