2N3904CTA

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Transistors - Bipolar (BJT) - Single is an electronic component used in electrical and electronic equipment. One such example is the 2N3904CTA transistor. The 2N3904CTA is a NPN silicon planar general-purpose transistor that can be used in a wide variety of applications.

The 2N3904CTA is typically used in applications such as general-purpose switching, amplifier circuits, and oscillator circuits. This transistor is typically operated at moderate current levels up to 500mA and is capable of operating at frequencies up to 1MHz. The 2N3904CTA also offers a relatively low saturation voltage of approximately 1V at a collector current of 1mA.

The working principle of the 2N3904CTA is based on the relationship between input and output in a semiconductor device. In this case, an electrical signal is input to the base of the transistor and amplified for a wider range of output signals. Two other terminals, known as the collector and the emitter, are used to complete the electrical circuit.

The base-collector junction of the transistor serves as a diode and allows the passage of current only from the collector to the base. The transistor is known as an amplifier device because it allows current to pass through it with very little resistance. Thus, the input signal that is received at the base is amplified at the collector end of the transistor, when the transistor is turned on.

When the transistor is in its on state, the collector current flows to the emitter, increasing the base current; this phenomenon is known as the “current gain”. The current gain is equal to the ratio of the collector current to the base current. In this way, the current gain of the 2N3904CTA transistor can be increased or decreased by the adjustment of the base current.

The voltage gain of the transistor is determined by the collector-emitter voltage, which is represented by transistor formula: Vce = Vbe + Ic/Beta. This equation tells us that the collector-emitter voltage will remain constant at a certain voltage value as long as the base current is kept constant. This type of gain behavior is known as the “logarithmic gain”.

The 2N3904CTA transistor is a reliable and commonly used component in a variety of circuit applications. Its wide-ranging application field makes it suitable for both analog and digital circuits, as well as high performance audio applications. Its excellent high frequency performance also make it an ideal choice for frequency-selective applications. The 2N3904CTA is in widespread use by designers of all experience levels, due to its variety of characteristics, stability and relatively low cost.

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