In the datasheets, 1.2@9A is stated as the peak forward voltage.A continuous forward current of 5 is the maximum consumption of this device.RF diode is necessary to operate the device at a DC reverse voltage below 220.
JANS1N5550US Features
the forward peak voltage is 1.2@9A
JANS1N5550US Applications
There are a lot of Microsemi JANS1N5550US applications of RF diodes.