According to the datasheets, the peak forward voltage is 1.3@3A volts.RF diode consumes approximately 1@Ta=55C in continuous forward current at any given moment.
GRP-DATA-JANTX1N4249 Features
the forward peak voltage is 1.3@3A
GRP-DATA-JANTX1N4249 Applications
There are a lot of Sensitron Semiconductor GRP-DATA-JANTX1N4249 applications of RF diodes.