The datasheets state that the peak forward voltage is 1.25.A continuous forward current of about 0.15 can be consumed by this device at any given time.In order to operate, you will need a DC reverse voltage less than 75.
1N4148W-Q Features
the forward peak voltage is 1.25
1N4148W-Q Applications
There are a lot of Diotec Semiconductor AG 1N4148W-Q applications of RF diodes.