According to the datasheets, the peak forward voltage is 0.54 volts.RF diode consumes approximately 0.5 in continuous forward current at any given moment.For operation, a DC reverse voltage less than 30 must be applied.
RKR0503AKJ#R6 Features
the forward peak voltage is 0.54
RKR0503AKJ#R6 Applications
There are a lot of Renesas Electronics RKR0503AKJ#R6 applications of RF diodes.