BDX54A-S

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The BDX54A-S is a single bipolar transistor from the D-PAK family of discrete semiconductors, manufactured by ROHM. This transistor can be considered a general-purpose device and is useful for a wide range of applications. It has a medium-power rating and can withstand high temperatures. As such, it is commonly used in power-supply circuits and other high-power circuits that require a robust design.

In terms of its structure, the transistor is a three-terminal device composed of a P-type semiconductor and an N-type semiconductor joined together. A small base current flows between the two producing a voltage that causes a larger current to flow through the portion of the transistor connecting the collector and emitter. This allows the transistor to be used as an amplifier and switch.

The BDX54A-S has a maximum collector current of 15A, a maximum collector-emitter voltage of 400V, and a maximum power dissipation of 1.5W. It has an excellent current gain, high switching speeds and a low saturation voltage, making it ideal for applications such as power switching, high-voltage switching and audio amplification. It also has a good temperature stability, making it useful for temperature-sensitive applications in harsh environments.

The BDX54A-S is also able to operate at high frequencies, which makes it useful for frequency-dividing, baseband input and power/miscellaneous circuit applications. The device has a maximum frequency of 260MHz and is relatively easy to use in such applications.

In terms of its working principle, the BDX54A-S operates according to the same basic principles as any other type of bipolar transistor. When a small current is passed between the base and emitter, it will cause a larger current to flow through the portion of the transistor connecting the collector and emitter, resulting in amplification. This process is dependent on the ratio of current flowing through the base to the current flowing through the collector. This ratio is known as the current gain.

The BDX54A-S is a useful transistor for a wide range of applications, from power-supply circuits to audio amplification and switching. Its robust construction and excellent current gain, along with its high frequency capabilities, make it an ideal candidate for a variety of applications that require a reliable and durable transistor.

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