CDZT2R3.9B

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Not For New Designs
Voltage - Zener (Nom) (Vz):	3.9V
Tolerance:	±3%
Power - Max:	100mW
Impedance (Max) (Zzt):	100 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 1V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOD-923
Supplier Device Package:	VMN2

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Diodes - Zener - Single

The CDZT2R3.9B is a single Zener diode that belongs to the family of semiconductor diodes. It is a two leads component that is recognised by its black color, so it is easy to spot it from a variety of components in a circuit. This diode is also distinguished from other diodes due to its unique symbol, which is represented by two arrows, it also has its polarity mark. When the voltage in the circuit increases, the current flow will decline.

Application Field

The CDZT2R3.9B is a desirable component for applications such as voltage regulation, power supplies and amplifiers. It can be used on a variety of voltage levels, but the most common ones are 5 V, 6 V and 9 V. When the CDZT2R3.9B is properly mounted on a PCB, it will enable the current to pass through while preventing any excessive voltage. This is a great component to be used in any small or medium circuit, which has to maintain a stable voltage level.

Working Principle

To understand this component\'s working principle, we must break down its structure. As we mentioned before, this component is a diode, which means it has two terminals. The terminal, which is more positive, is known as the anode, while the more negative one is called the cathode. When a voltage is applied to the component, the current will flow through it. The CDZT2R3.9B is special, because when a specific voltage is applied to the component, it will remain stable regardless of the level of the current. This is different from the usual behavior of a diode, which is that the current will increase if the voltage increases as well.When the component is exposed to a higher voltage level than its threshold, the current will begin to flow trough it. This current will be constant and will remain at the same level as long as the voltage doesn’t exceed the component’s threshold. This is why it is so useful for voltage regulation and amplifiers. The component will absorb the excess voltage and keep the current flow under control.

Conclusion

The CDZT2R3.9B is a single Zener diode that can be used on a variety of voltage levels. It is especially useful for applications such as voltage regulation and power supplies, because it will absorb any excessive voltage and stabilise the current. By understanding its structure and working principle, one can easily identify the advantages of using this component in a circuit.

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