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Schottky Diode
Schottky diode
Schottky diode is major charge carrier device. It has no minor charges to recover when device goes on to off or vice versa.
Walter H. Schottky then James Robert Baird US Patent 3463975
A schottky diode has non ideal properties. Among them is a capacitance (e. g. 900pF), which delays switching in case of a polarity reversal.