According to the datasheets, the peak forward voltage is 0.85.The maximum continuous forward current that this device consumes at any given time is about 1.A DC reverse voltage less than 80 must be used for operation.RF diode is recommended to keep the forward voltage of the system above 0.85(V).
SK 110 Features
the forward peak voltage is 0.85
SK 110 Applications
There are a lot of Diotec Semiconductor AG SK 110 applications of RF diodes.