PZU7.5B2L,315

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The PZU7.5B2L,315 is a single Zener diode which finds application as a voltage regulator, for controlling surges or as a reference to a current source. Zener diodes are different from other types of diodes in that they are made of a semiconductor material such as silicon, they are constructed with a p-n junction and they work in the reverse bias condition. When the reverse bias voltage exceeds the breakdown voltage of the diode, the diode will start conducting current. When the applied voltage is greater than a certain breakdown voltage, the diode is said to be in a Zener breakdown or Zener breakdown condition.

The PZU7.5B2L,315 has a breakdown voltage of 7.5V and is capable of handling up to 315mA of current. This makes it suitable for a wide range of application, such as voltage regulation, current source control and surge protection. The device is a good choice for battery protection and other general application, since it has a wide operating temperature range of -55°C to +125°C.

Zener diodes work on the principle of reverse breakdown. When the applied reverse bias voltage exceeds the reverse breakdown voltage (Vz) of the diode, it will start conducting the current. This current is usually very small and is limited to the specified maximum forward current rating of the diode. This current is called the Zener current and is used for application such as voltage regulation and current source control.

The PZU7.5B2L,315 diode is used in various circuit applications as a power supply regulator, to provide an accurate reference voltage for current sources, to protect sensitive components from voltage surges and to provide protection from over-voltage and over-current conditions. The device is also suitable for damping oscillations, by providing a limit to the peak voltage.

In voltage regulation applications, the Zener diode is connected in series with a resistor across the power supply so that the Zener current is limited to the specified maximum forward current. The diode then acts as a voltage regulator, by providing a regulated voltage which remains constant even under varying load and line conditions.

In the current source control application, the Zener diode is used to provide a reference voltage for the current source. The diode is connected in parallel with the current source and the output voltage of the source is regulated by controlling the amplitude of the Zener current. This technique is also used for voltage stabilisation and noise reduction.

Zener diodes are also used as surge protectors, to protect sensitive components from transient voltage surges. As the surge voltage exceeds the break down voltage of the Zener diode, the Zener will start conducting the current and limit the voltage across the protected components. As the surge voltage returns to normal, the Zener diode will again stop conducting and the protected components will return to their normal state.

In applications that require damping oscillations, the Zener diode acts as a voltage limiter, by providing a limit to the peak voltage. The diode will start conducting when the voltage across it exceeds its breakdown voltage and thus limiting the voltage and damping the oscillation. The Zener diode will then stop conducting when the voltage returns to normal.

The PZU7.5B2L,315 Zener diode is a versatile device which finds application in a wide range of circuit applications, including voltage regulation, current source control, surge protection and oscillation damping. It is well suited for battery protection, general purpose use and a wide range of operating temperatures.

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