Transistor PN2222A NPN 40V / 1A

Transistor PN2222A NPN 40V / 1A

Product information:

The 2N2222 is a common NPN bipolar junction transistor (BJT) used for general purpose low power amplification or switching applications. It is designed for low to medium current, low power, medium voltage operation, and can operate at moderately high speeds.
The 2N2222 is often used as a small-signal transistor, and it remains a general-purpose small transistor that has enjoyed continued popularity.

Maximum current: 800mA
Maximum power: 500mW
Maximum voltage (collector-emitter): 40V

Pinout:

What does an NPN transistor do?

An NPN transistor is a type of bipolar transistor that uses current or voltage to control the flow of current through a circuit. The key feature of an NPN transistor is that current flows from the collector to the emitter when a small current is applied to the base.

What an NPN transistor does:

Switching: When a positive voltage is applied to the base relative to the emitter (more positive than the emitter), the transistor turns 'on', allowing current to flow from the collector to the emitter. This is used in circuits to switch power.

Amplification: A small input current (from the base to the emitter) causes a much larger current to flow through the collector. This makes the NPN transistor useful as an amplifier for electrical signals.

In an NPN transistor, the collector is the positive side, the emitter is the negative side, and the base is the switch that enables current flow between the collector and emitter.

In summary: An NPN transistor allows current to flow from the collector to the emitter when a positive voltage is applied to the base.