Datasheets indicate 0.85 as the peak forward voltage.RF diode consumes about 2 continuous forward current at any given time.RF diode must be operated wRF diodeh a DC reverse voltage less than 90 V.
SK29A R2 Features
the forward peak voltage is 0.85
SK29A R2 Applications
There are a lot of Taiwan Semiconductor SK29A R2 applications of RF diodes.