The peak forward voltage is 1 in the datasheets.A continuous forward current of about 3@Ta=105C is consumed by this device at all times.DC reverse voltage less than 100 is required.
1N5401-T/R Features
the forward peak voltage is 1
1N5401-T/R Applications
There are a lot of Micro Commercial Components 1N5401-T/R applications of RF diodes.