In the datasheets, 1.3 is stated as the peak forward voltage.A continuous forward current of 3 is the maximum consumption of this device.RF diode is necessary to operate the device at a DC reverse voltage below 800.
RS3KHV7G Features
the forward peak voltage is 1.3
RS3KHV7G Applications
There are a lot of Taiwan Semiconductor RS3KHV7G applications of RF diodes.