According to the datasheets, the peak forward voltage is 1.15.The maximum continuous forward current that this device consumes at any given time is about 5.A DC reverse voltage less than 600 must be used for operation.
S5JH R6G Features
the forward peak voltage is 1.15
S5JH R6G Applications
There are a lot of Taiwan Semiconductor S5JH R6G applications of RF diodes.