According to the datasheets, the peak forward voltage is 1.25 volts.RF diode consumes approximately 0.2 in continuous forward current at any given moment.For operation, a DC reverse voltage less than 200 must be applied.
BAS21-AQ Features
the forward peak voltage is 1.25
BAS21-AQ Applications
There are a lot of Diotec Semiconductor AG BAS21-AQ applications of RF diodes.