FERD Field Effect Rectifiers STMicroelectronics Field-Effect Rectifier Diodes (FERDs) help improve applications with designs focusing on trade-off upgrades. The design of the FERDs has allowed both a decrease in the voltage drop and a decrease in the leakage current temperature coefficient. As a result, the runaway safety margin is improved and maybe beyond the typical safety margin of Schottky barrier diodes. Depending on the targeted application and its voltage, developers can now choose the best compromise in terms of forward voltage drop (VF) and leakage current (IR).