BF393G

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BF393G is a commonly used small signal NPN silicon transistor with a high current gain. It is one of the most popular bipolar junction transistors used for the amplification of signals in low-power circuits. The device’s maximum collector current rating is 200mA, with a total power dissipation of 500mW. The maximum collector-base and collector-emitter breakdown voltages are 30V and 50V respectively. BF393G is used in a variety of applications, including audio and linear amplifiers, power supply circuits, and motor controls.

The BF393G is a three-terminal device composed of NPN type silicon material. It has a highly symmetrical structure that makes it very efficient in amplifying signals in low-power circuits. To understand how it works, it is important to be familiar with its symbol representation, shown below. The symbol consists of three terminals: the collector (C), the emitter (E), and the base (B).

When a small voltage is applied between the base and emitter terminals, a current flows through the transistor, causing a current to flow through the collector. This current is controlled by the amount of voltage applied across the base-emitter terminals, often referred to as the biasing voltage. The current amplification factor (β or hfe) is determined by the amount of current that flows through the collector for a given amount of voltage applied across the base-emitter terminals. The amount of current that can be supplied by the collector is limited by the amount of power dissipated (Pd) through the transistor. The maximum power dissipation of the BF393G is 500mW.

BF393G is generally used as a power amplifier in low power audio systems. It can be used to amplify signals from audio sources such as an MP3 player or a microphone. It can also be used for linear amplifiers and motor controls applications. It has a wide application range, from small amplifiers to power supplies and motor controls.

The common benefits derived from using the BF393G include low power consumption and cost-efficiency. The device dissipates very little power and requires minimal biasing voltage, resulting in significant savings in terms of energy consumption. Additionally, the device offers high current gain, making it an ideal choice for signal amplification.

In summary, the BF393G is a three-terminal, NPN-type bipolar junction transistor. It is commonly used in low-power applications such as audio amplifiers, linear amplifiers, and motor controls. The device offers high current gain and low power consumption, making it a cost-efficient solution for signal amplification. With its high current gain, the BF393G can provide reliable amplified signals required for a variety of applications.

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