The SMF22A is a general purpose, fast-recovery, rectifier diode manufactured by Diotec. It has a peak forward surge current of 30A, a reverse voltage rating of 200V, and a maximum forward voltage of 0.7V. The device is typically used in power supplies, reverse polarity protection, and high-speed switching applications. It features a high-speed switching speed of 0.5µs, a low forward voltage drop of 0.7V, an ultra-low reverse leakage current of 5µA, and a soft recovery time of 16-20ns. The SMF22A also has a high frequency operation capability up to 200kHz.