The datasheets state that the peak forward voltage is 1.1.In this device, the reverse voltage range can reach a maximum of 420, which makes it highly efficient.
TS8P05G D2 Features
the forward peak voltage is 1.1 the peak RMS reverse voltage range of 420
TS8P05G D2 Applications
There are a lot of Taiwan Semiconductor TS8P05G D2 applications of RF diodes.