The peak forward voltage is 1.8 in the datasheets.A continuous forward current of about 0.5@Ta=55C is consumed by this device at all times.DC reverse voltage less than 1200 is required.
RL1N1200F Features
the forward peak voltage is 1.8
RL1N1200F Applications
There are a lot of Rectron RL1N1200F applications of RF diodes.