The datasheets state that the peak forward voltage is 1.1.A continuous forward current of about 1.5 can be consumed by this device at any given time.In order to operate, you will need a DC reverse voltage less than 800.
S15KLWHRQG Features
the forward peak voltage is 1.1
S15KLWHRQG Applications
There are a lot of Taiwan Semiconductor S15KLWHRQG applications of RF diodes.