Diotec fx20k120 20a axial protectifier low vf rectifier diode overvoltage protec diotec fx20k120 the fx20k120 b protectifier b is a 20a 120v rectifier diode with low forward losses and overvoltage protection the diode has a high reverse pulse power capability and comes in an axial p600 package diotec fx20k120 rectifier diode with overvoltage protection 120v 20a p600