The datasheets state that the peak forward voltage is 1.3.A continuous forward current of about 20 can be consumed by this device at any given time.In order to operate, you will need a DC reverse voltage less than 200.
HFB20HJ20CSCS_CDDATAPACK Features
the forward peak voltage is 1.3
HFB20HJ20CSCS_CDDATAPACK Applications
There are a lot of Infineon Technologies AG HFB20HJ20CSCS_CDDATAPACK applications of RF diodes.