DDZ20CS-7 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	20V
Tolerance:	±3%
Power - Max:	200mW
Impedance (Max) (Zzt):	28 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 15V
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:	DDZ20

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Diodes - Zener - Single is an important type of diode in the electronics industry, and the DDZ20CS-7 is its representative product. This article mainly discusses the application field and working principle of DDZ20CS-7.

1. Application field of DDZ20CS-7

The DDZ20CS-7 is mainly used in power supplies, LED lighting, automobile electronics, and DC-DC converters.

• Power supplies: It is widely used in various power supplies, such as ac-dc power supplies, dc-dc converter modules, switching power supplies, and so on. It is also suitable for automotive power supplies, laptop power supplies and other power products.
• LED lighting: The current surge caused by LED lighting when the lamp is switched on often requires that a Zener diode is added in series. The DDZ20CS-7 provides strong protection and prevents it from burning out due to initial high current inrush.
• Automotive electronics: In the field of automotive electronics, DDZ20CS-7 can be used for overvoltage protection and ground fault protection.
• DC-DC converter module: The same is true for DC-DC converter modules, where DDZ20CS-7 can be used for voltage regulation, over-voltage protection, etc.

2. Working principle of DDZ20CS-7

The working principle of DDZ20CS-7 is based on the Zener diode theory. The Zener diode is specially designed to work in reverse bias condition. When the applied voltage is lower than the Zener voltage, the Zener diode behaves as a normal diode and will not conduct any current. However, when the applied voltage exceeds the Zener voltage, the diode will conduct the excess voltage and limit the voltage across it to the Zener voltage. This process is known as Zener breakdown.By adding a Zener diode in a circuit, such as DDZ20CS-7, the voltage is limited to the Zener voltage in a safe range, thus protecting the circuit from being damaged by excessive voltages. The Zener diode also has a low voltage drop and can be used to obtain a regulated voltage from an unregulated voltage source.

In summary, DDZ20CS-7 is a very useful and versatile device. It can be used in a variety of applications, from power supplies to automotive electronics, and its working principle is based on the Zener diode theory. It is an important component in modern electronic circuits and can be used for voltage regulation, over-voltage protection, and ground fault protection.

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