In the datasheets, 0.5 is stated as the peak forward voltage.A continuous forward current of 2 is the maximum consumption of this device.RF diode is necessary to operate the device at a DC reverse voltage below 20.
SS22L R3 Features
the forward peak voltage is 0.5
SS22L R3 Applications
There are a lot of Taiwan Semiconductor SS22L R3 applications of RF diodes.