VS-E7FX0x12 FRED Pt® Hyperfast Rectifiers Vishay Semiconductors VS-E7FX0x12 FRED Pt® Hyperfast Rectifiers are specifically designed with optimised forward voltage drop performance and hyper-fast recovery time. The planar structure and the platinum-doped lifetime control guarantee leading performance, robustness, and reliability characteristics. These devices are intended for use as clamp, snubber, and freewheeling diodes in flyback auxiliary power supplies, bootstrap and desaturate for HV MOSFET and IGBT drivers, and high-frequency rectifiers in a cuk and sepic circuit for LED lighting. The rectifier's highly optimised stored charge and low recovery current minimise switching losses and reduce power dissipation in the switching element.