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.
YBS3007G RAG Features
the forward peak voltage is 1.1 the peak RMS reverse voltage range of 700
YBS3007G RAG Applications
There are a lot of Taiwan Semiconductor YBS3007G RAG applications of RF diodes.