SKx Schottky Barrier Rectifier Diodes Diotec Semiconductor SKx Schottky Barrier Rectifier Diodes feature low forward voltage drop, high average forward current, and diodes with the -AQ suffix are AEC-Q101 qualified. These SKx diodes come in a UL 94V-0 case material and a -50°C to +150°C operating junction temperature range. Diotec Semiconductor SKx Schottky Barrier Rectifier Diodes are ideal for output rectification in DC/DC converters, polarity protection, free-wheeling diodes, commercial/industrial, and automotive-grade applications.