According to the datasheets, the peak forward voltage is 1.1.The maximum continuous forward current that this device consumes at any given time is about 1.A DC reverse voltage less than 1000 must be used for operation.
GSGP7A Features
the forward peak voltage is 1.1
GSGP7A Applications
There are a lot of Good-Ark Semiconductor GSGP7A applications of RF diodes.