In the datasheets, 1.3 is stated as the peak forward voltage.A continuous forward current of 2.5@Ta=55C is the maximum consumption of this device.RF diode is necessary to operate the device at a DC reverse voltage below 100.
RGP25B-E3/73 Features
the forward peak voltage is 1.3
RGP25B-E3/73 Applications
There are a lot of Vishay RGP25B-E3/73 applications of RF diodes.