The peak forward voltage is 1.1 according to the datasheets.This device consumes about 2 continuous forward current at any given time.To operate, a DC reverse voltage less than 800 must be used.
S2MSMA-AQ Features
the forward peak voltage is 1.1
S2MSMA-AQ Applications
There are a lot of Diotec Semiconductor AG S2MSMA-AQ applications of RF diodes.