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2N4401 Transistor Introduction

2N4401 is a common transistor, which has some very good functions in its small package. The maximum collector current is 500 mA, which is enough to drive many loads in the circuit.

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BC548 Transistor Introduction

BC548 is another widely used general-purpose transistor, which also has many excellent characteristics. It can be used in its electronic circuits, and it can handle a maximum current of 500 mA. Enough to drive many other components, such as ICs, other transistors, parts of circuits, relays, LEDs, etc.

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