650V Z-Rec SiC Schottky Diodes Wolfspeed Z-Rec Schottky Diodes provide extremely fast switching with virtually no switching losses. This feature is accomplished by high-frequency operation and temperature-independent switching behavior. Wolfspeed Z-Rec Schottky Diodes also can parallel devices without thermal runaway, reducing heat sink requirements. These unipolar devices can replace bipolar rectifiers and are ideal for switch-mode power supplies, power factor correction, and motor drives.