S9012 Surface mount transistorDetailed product description：

Some people think that the S9012 model only has plugins, but in fact, this model had SMT as early as 2007. Its packaging is SOT-23 packaging.
SMT transistor manufacturers sell various conventional models of SMT transistors, such as the 9012, 9013, 0603, 0805 and other series.

Some S9012 surface mount transistors have the words "standard H128" or "H331" after them, which represent the batch number or place of origin of the product, used for distribution channels, and are not related to parameters.
There are also differences between S9012 surface mount transistor and C9012 surface mount transistor

C9012 is the abbreviation of KTC9012, which is a unique model of KEC KEC is a well-known semiconductor manufacturer in South Korea, and only the 9012 produced by KEC starts with C ）And S9012 used to be FAIRCHILD from the United States (a world-renowned semiconductor manufacturer, don't you know it? ）The model was later adopted by many domestic manufacturers. But their functions are exactly the same.