According to the datasheets, the peak forward voltage is 1.1 volts.RF diode consumes approximately 1 in continuous forward current at any given moment.
DNU-MSE1PGHM389A Features
the forward peak voltage is 1.1
DNU-MSE1PGHM389A Applications
There are a lot of Vishay DNU-MSE1PGHM389A applications of RF diodes.