The datasheets state that the peak forward voltage is 0.8.A continuous forward current of about 1 can be consumed by this device at any given time.In order to operate, you will need a DC reverse voltage less than 90.
SRT19HR0 Features
the forward peak voltage is 0.8
SRT19HR0 Applications
There are a lot of Taiwan Semiconductor SRT19HR0 applications of RF diodes.