DDZ9705Q-7

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Diodes are one of the most fundamental electrical components, and they play a key role in all sorts of common circuits, from voltage regulation to signal processing. A Zener diode, in particular, is a specialized diode intended for precise voltage regulation. The DDZ9705Q-7 is one such Zener diode, a single-diode 500 mW low-leakage Zener diode. This article provides an overview of the DDZ9705Q-7’s application field and working principle.

Application Fields

The DDZ9705Q-7 has a wide range of potential applications due to its precise voltage-regulating and low-leakage characteristics, making it suitable for a variety of tasks that require precise and reliable voltage regulation. In many industrial, consumer, and scientific applications, including consumer electronics, remote control systems, RF receivers, telecommunications, and power systems, the DDZ9705Q-7 can be used as a voltage regulator, current limiter, and surge suppressor. It can also be used for voltage-sensitive circuits in automotive, medical, and aerospace devices.

Working Principle

A Zener diode is a diode that is designed to allow current to flow in the reverse direction when a certain predetermined threshold voltage or breakdown voltage is exceeded. The breakdown voltage is determined by the composition of the semiconductor material inside the diode, and once this voltage is exceeded, the diode will conduct in reverse. The DDZ9705Q-7 has a breakdown voltage of 5.7 V and a reverse leakage current of 5 μA.

When the diode is forward-biased, it behaves like an ordinary diode and does not conduct. When the diode is reverse-biased, it behaves like an open circuit until the voltage reaches the breakdown voltage. At this point, the diode begins to conduct in reverse, and the voltage across the diode is effectively “clamped” at the breakdown voltage.

Because of its low leakage current, the DDZ9705Q-7 is capable of providing precise voltage regulation. It is also able to dissipate a significant amount of power and provides effective protection against transient overvoltages.

Conclusion

The DDZ9705Q-7 is a single-diode 500 mW low-leakage Zener diode well-suited for a wide range of applications that require precise and reliable voltage regulation. Its working principle is based on the fact that it begins to conduct when the voltage across it reaches the pre-determined breakdown voltage, effectively clamping the voltage at the breakdown voltage. While it is suitable for many applications, it is important to note that it is not suitable for use in audio circuits since it can generate noise.

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