A 2N3904 transistor is a small electronic device that is used to amplify or switch electronic signals. It is a type of NPN bipolar junction transistor (BJT) that is commonly used in electronic circuits.
The 2N3904 transistor has a maximum current rating of 200 mA, a maximum voltage rating of 40 V, and a maximum power dissipation of 625 mW. It also has a typical gain of 100 and a low saturation voltage, making it suitable for low-power applications.
Compared to other transistors, the 2N3904 has a relatively low maximum current and voltage rating. However, it has a higher gain and lower saturation voltage, making it suitable for low-power amplification and switching applications.
The 2N3904 transistor is commonly used in audio amplifiers, low-power switching circuits, and voltage regulators. It is also used in small electronic devices such as calculators, toys, and radios.
A 2N3904 transistor can be identified by its three leads, typically labeled as collector (C), base (B), and emitter (E). It also has a distinctive flat side and a round side, with the flat side representing the collector. The part number "2N3904" should also be visible on the transistor's body.