The peak forward voltage is 1.3 according to the datasheets.This device consumes about 5 continuous forward current at any given time.To operate, a DC reverse voltage less than 400 must be used.
HER505GP-TP Features
the forward peak voltage is 1.3
HER505GP-TP Applications
There are a lot of Micro Commercial Components HER505GP-TP applications of RF diodes.