The datasheets indicate that the peak forward voltage is 0.5.At any given time, this device consumes about 1 continuous forward current.The DC reverse voltage must be less than 30.
SS13-HE3/11 Features
the forward peak voltage is 0.5
SS13-HE3/11 Applications
There are a lot of Vishay SS13-HE3/11 applications of RF diodes.