The datasheets state that the peak forward voltage is 0.55.A continuous forward current of about 5 can be consumed by this device at any given time.In order to operate, you will need a DC reverse voltage less than 20.
SK52BHR5 Features
the forward peak voltage is 0.55
SK52BHR5 Applications
There are a lot of Taiwan Semiconductor SK52BHR5 applications of RF diodes.