In the datasheets, 1.1 is stated as the peak forward voltage.In order to operate efficiently, this device should have a peak RMS reverse voltage range of 700.
DF10S-T-F Features
the forward peak voltage is 1.1 the peak RMS reverse voltage range of 700
DF10S-T-F Applications
There are a lot of Diodes Incorporated DF10S-T-F applications of RF diodes.