DDZ9687Q-7

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Diodes are essential components of modern electrical circuitry, and the Zener-single type is one of the most important. The DDZ9687Q-7 is a single Zener diode with a breakdown voltage of 6.8V, making it suitable for a wide range of applications. This article will discuss the various applications of the DDZ9687Q-7, as well as its working principle.

Applications

The DDZ9687Q-7 is primarily used as a voltage reference device, controlling the output of a power supply or providing a reference voltage for digital circuits. It is popular in circuits where a stable reference voltage is critical, such as regulator circuits, instrumentation, and communication systems. Its breakdown voltage of 6.8V also makes it suitable for a wide range of logic gate configurations, building the foundation of digital circuits.

The DDZ9687Q-7 can also be used for voltage clamping in protection circuits. This is a popular application due to the low reverse leakage current of the component, which prevents accidental irradiation of the device and reduces power consumption. Furthermore, the diode can be also employed for peak current limiting in power supply circuits, providing effective control of current flow.

Working Principle

The DDZ9687Q-7 component is a single Zener diode constructed from two semiconductor layers sandwiching a thin, lightly-doped piece of semiconductor material. This light doping causes the component to have a high breakdown voltage. When the component is connected in a circuit, the applied voltage creates a voltage gradient across the lightly-doped semiconductor layer, resulting in a high electrical field. When this field becomes high enough, electrons break free, creating an electron-hole pair. These electrons are then accelerated through the device, creating a larger voltage drop than the applied voltage, turning the component into a voltage reference.

The Zener effect is dependent on the doping concentration of the component\'s semiconductor layer, which depends on the component\'s breakdown voltage. For example, the DDZ9687Q-7 has a breakdown voltage of 6.8V, while a component with the same size and a higher breakdown voltage of 9V may need different device parameters to create the same effect.

Conclusion

The DDZ9687Q-7 is a single Zener diode with a breakdown voltage of 6.8V, making it suitable for a wide range of applications. It is commonly used for voltage reference, voltage clamping, and peak current limiting. Its working principle is based on the Zener effect, which is created by a high electric field in the lightly-doped section of the component, resulting in an electron-hole pair which produces a larger voltage drop than the applied voltage.

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