SOT is a surface mount package, usually a small transistor with 5 pins or less.

Definition: according to the different surface widths, there are two types, one is 1.3mm and the other is1.6mm. The corresponding socket models are 4330 12 1 and 433112 respectively. Pay attention when using.

Diode IC chip code refers to the abbreviation code on the surface of component tube, and English is markingcode, top, mark mark and marking. There are two processes: screen printing and laser.

Because the size of SMD components is relatively small, it can not accommodate a complete model, so all manufacturers have established their own abbreviation code rules, and the combination of extremely short letters+numbers+symbols is printed on the surface of the pipe body by laser or screen printing as a model mark to distinguish the models.