In the datasheets, 1.7 is stated as the peak forward voltage.A continuous forward current of 1 is the maximum consumption of this device.RF diode is necessary to operate the device at a DC reverse voltage below 800.A forward voltage of over 1.7(V) is recommended for the system.
US1K F2 Features
the forward peak voltage is 1.7
US1K F2 Applications
There are a lot of Taiwan Semiconductor US1K F2 applications of RF diodes.