SiC Schottky Barrier Diodes Toshiba SiC Schottky Barrier Diodes (SBDs) feature high reverse voltage ratings and short reverse recovery time (trr). Toshiba also provides 650V SBDs with a junction barrier Schottky (JBS) structure for low leakage current (Ir) and high surge current capability. These devices improve the efficiency of switched-mode power supplies.