MZP4746ARLG Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	18V
Tolerance:	±5%
Power - Max:	1W
Impedance (Max) (Zzt):	20 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 13.7V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 200mA
Operating Temperature:	-65°C ~ 200°C
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	Axial
Base Part Number:	MZP4746

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MZP4746ARLG application field and working principle

Overview Of Diodes - Zener - Single

Diodes - Zener - Single, classically called a Zener diode, is a type of diode which is connected in reverse-polarity of a normal diode, allowing electricity to flow in the opposite direction as well. When the voltage of a system increases beyond the voltage levels specified by the manufacturer and the breakdown voltage of normal diodes, the zener diode can maintain the voltage levels without the need to replace regular components. The MZP4746ARLG is a silicon planar Zener diode built with Zener and avalanche characteristics. It is designed to take full advantage of their low inverse voltage requirement and their superior avalanche characteristics, makes them a suitable choice for low-voltage applications such as voltage regulation and voltage flattening.

Application Fields

The MZP4746ARLG is suitable for a wide range of applications from controlling static current and static voltage to low-voltage application and voltage regulation.

• Surge Protection
• Automotive application
• Voltage Regulation
• Voltage Flattening
• Active Voltage Clamping
• Small-Signal Control
• Cellphone Power Voltage Regulation
• High-Frequency Signal Rectification

Working Principle

The working principle of the MZP4746ARLG is quite simple: when the voltage of a system increases beyond the voltage levels specified by the manufacturer and the breakdown voltage of normal diodes, the existing voltage is decreased by the Zener diode. This stabilizes the power and maintains the voltage levels. In a nutshell, the Zener diode blocks the opposite voltage direction in order to clamps the voltage both in forward and reverse bias.This is done by increasing the depletion region of a regular diode by greatly increasing the doping levels, which increases its breakdown voltage. The Zener diode then reacts to the reverse bias and immediately starts to conduct when the necessary breakdown voltage is achieved. This allows an electrostatic charge to build up until its potential allows the electric field to break down the P/N junction barriers, thus ensuring efficient voltage regulation.

Conclusion

In conclusion, the MZP4746ARLG is a reliable and sturdy choice for a variety of applications, with its ability to handle a wide range of voltage seasons and its superior current handling capabilities. Its low inverse voltage requirement and its superior avalanche characteristics, make them a suitable choice of Zener diode for a wide range of applications including voltage regulation, voltage flattening and active voltage clamping.

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