Diotec sbx2540 2nd generation bypass axial schottky rectifier diode 40v 25a p600 diotec sbx2540 the b sbx2540 b is a 40v 25a 2nd generation bypass schottky rectifier diode that is ideal for use with solar modules comes in an axial p600 package diotec sbx2540 schottky barrier rectifier diode 40v 25a p600