TZQ5255B-GS18

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Diodes are widely used in electronic systems such as computers, mobile phones, and auto electronics. They have a variety of applications and are essential components in modern electronic devices. The TZQ5255B-GS18 is a single Zener diode, which is widely used in voltage regulation and voltage reference applications. This article will explain the application field and working principles of the TZQ5255B-GS18.

The TZQ5255B-GS18 is a high-quality, low-power Zener diode designed for use in a wide range of applications. It is designed to operate at an operating temperature range of -40 to +125°C. It has a maximum reverse breakdown voltage of 18V and a maximum forward voltage of 0.1V. The reverse leakage current is very low, ranging from 0.1 µA to 5 µA. The diode has a fast reverse recovery time of less than 10 ns. With a typical thermal resistance of 3.5 K/W, it provides a good heat dissipation capability.

The TZQ5255B-GS18 can be applied in voltage regulation and voltage reference applications, such as voltage stabilization in battery charging circuits and voltage sensing in automotive systems. In voltage regulation applications, the TZQ5255B-GS18 can be used in series with a load to provide a constant output voltage, even when the input voltage varies. This is achieved by the Zener diode operating in a reverse bias direction and maintaining a constant voltage across the diode. In voltage sensing applications, the diode can be placed in parallel with a load, and the voltage across the diode will be maintained constant regardless of the load current. This allows for precise readings to be taken for monitoring and control purposes.

The working principle of Zener diode is based on the tunneling effect. In the forward bias direction, majority charge carriers, i.e. electrons and holes, move from the p-type to the n-type region, generating a current through the diode. However, when the applied voltage reaches a certain “threshold” or “breakdown” voltage, the electric field in the depletion region increases, and the electrons and holes start tunneling through the barrier, generating a large current. This high current generates a voltage drop across the diode, which is maintained constant even in the presence of changes in the input voltage.

The TZQ5255B-GS18 single Zener diode is a reliable, low-cost, and high-performance device that is widely used in voltage regulation and voltage reference applications. Its main feature is its ability to maintain a constant output voltage, even under varying input voltages. This makes it an ideal choice for use in battery charging circuits and automotive systems.

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