CLL4747A TR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	20V
Tolerance:	±5%
Power - Max:	1W
Impedance (Max) (Zzt):	22 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 15.2V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-65°C ~ 200°C
Mounting Type:	Surface Mount
Package / Case:	DO-213AB, MELF
Supplier Device Package:	MELF

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Introduction

CLL4747A TR is a type of Zener diode with single chip construction. It is constructed using a special semiconductor process, and connected in parallel with a normal diode to allow current to flow in reverse, as also known as breakdown voltage. CLL4747A TR diodes are used for a variety of applications such as the control of bias during rectification, current limiting, voltage regulation and many other purposes.

Application Fields

CLL4747A TR diodes are used in a variety of application fields. They are mostly used in power supplies, as rectifiers in circuits, voltage regulators and signal clippers. They also play a very important role in the protection of sensitive circuits, where they limit the current that is flowing in either direction.

Energy Applications

CLL4747A TR diodes are used in many energy applications. They are used as rectifier elements in solar cells, in solar ground mounting systems and photovoltaic arrays. CLL4747A TRs are used to protect circuits against overvoltage, which can cause damage to electronic components.

Telecommunication Applications

CLL4747A TR diodes are often used in telecommunication applications. They are used for signal clipping and for switching in hybrid systems. Furthermore, they are used as voltage regulators in antennas and for protection of sensitive transducers against overvoltage.

Consumer Applications

CLL4747A TR diodes are often used in consumer applications such as household appliances, computers, televisions and audio equipment. They are used for current (amplifier) limiting, voltage regulation and noise suppression to protect circuits against damage caused by overvoltage or excessive current.

Working Principle

CLL4747A TR diodes are constructed using a special semiconductor process. They are connected in parallel with a normal diode to allow current to flow in reverse (through the Zener diode) when the voltage rises above the stated breakdown voltage. When a Zener diode reaches the breakdown voltage (breakover) the current flow in the diode increases suddenly and the potential difference across the diode drops to a much lower voltage. The voltage difference is the regulated or “clipped” voltage for most applications, and the current will be limited by the properties of the diode.In power applications, the current-limiting and voltage-regulating characteristics of a Zener diode, and specifically the CLL4747A TR, are used, as per its application field. A single CLL4747A TR can be used to regulate the output voltage of a power supply system, while multiple CLL4747A TRs can be used in parallel in order to increase the power dissipation.

Conclusion

In conclusion, CLL4747A TR is a single-chip variety of Zener diode with a wide range of applications, such as power supplies, rectification, audio equipment, energy applications, telecommunication and consumer applications. It is connected in parallel with a normal diode, and when an overvoltage is present, the Zener diode reaches the breakdown voltage and the voltage difference across the diode is the “clipped” voltage. CLL4747A TR diodes are used for current limiting and voltage regulating, as well as for protection of sensitive circuits against overvoltage.

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