Diotec sbx3040 2nd generation bypass axial schottky rectifier diode 40v 30a p600 diotec sbx3040 the b sbx3040 b is a 40v 30a 2nd generation bypass schottky rectifier diode that is ideal for use with solar modules comes in an axial p600 package diotec sbx3040 schottky barrier rectifier diode 40v 30a p600