DDZ9707S-7

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	20V
Tolerance:	±5%
Power - Max:	200mW
Current - Reverse Leakage @ Vr:	50nA @ 15.2V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SC-76, SOD-323
Supplier Device Package:	SOD-323
Base Part Number:	DDZ9707

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Diodes - Zener - Single: DDZ9707S-7

A diode is a device that allows electrical current to flow in only one direction. Diodes are commonly used in electronics, and one type of diode that is particularly useful is Zener diodes, which control the voltage in a circuit. A Zener diode is typically composed of a single layer of PN junction material (silicon, germanium, and so on). DDZ9707S-7 is a single Zener diode- a diode with a breakdown voltage of 7 Volts. It is suitable for applications that require protection against transient overvoltage, static voltage protection, and ECP (electro-chemical potential) stabilization.

Application Field

DDZ9707S-7 has a wide range of applications, primarily those that require voltage protection or voltage stabilization. The most common use for this diode is for general-purpose protection and voltage level shifting. It can be used to protect transistors from voltage overshoot, protect integrated circuits from "latch-up" due to excessive voltage, and as part of a current-limiting circuit for semiconductor devices. It is also commonly used as a "voltage spike absorber" or "clipper circuit" for AC rectification circuits.

Working Principle

DDZ9707S-7 has two main functions - voltage protection and voltage stabilization. Its break down voltage (7V) is the voltage level at which the diode will begin to conduct current, thereby protecting any device connected to it from damage caused by excess voltage. When connected to a circuit, it acts as a "clipper" and limits the voltage in the circuit to the breakdown voltage of the diode. As the breakdown voltage is "clipped", the voltage across the diode remains at a constant level. This is known as "stabilization", as no matter what the input voltage is, the output voltage will remain constant as long as it does not exceed the breakdown voltage.The internal structure of DDZ9707S-7 is similar to a standard diode, but with the addition of a high layer of resistance material (usually high quality silicon dioxide) which increases the breakdown voltage of the device. This high layer of resistance material blocks current flow until the voltage exceeds a certain threshold, at which point it begins to rapidly increase the current flow to its maximum value within milliseconds. This means that any sudden spikes in voltage are quickly absorbed by the diode, thus protecting any device connected to it.

Conclusion

DDZ9707S-7 is an extremely useful single Zener diode with a wide range of applications. It is most often used in protection and voltage level shifting circuits, and can also be used in AC rectification circuits to protect from sudden voltage spikes or "over-voltage" conditions. By absorbing the excess voltage, the Zener diode prevents damage to any devices connected to it, making it an important component in any circuit.

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