... Demodulation, Schottky, Fast recovery, Zener, Variable etc. 1,SMD Diodes(Microwave, High frequency, Attenuation, Demodulation, Schottky, Fast recovery, ... Frequency. S9012 MMBT3904 S9014 MMBT5551 S2301 TL431 SMD Transistor are designed for use in various fields ... communications, PCs, consumption electronic products, household equipments, and industry automatic control devices, etc. SOT-23 Transistors ...