BZX84C30-HE3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	30V
Tolerance:	±5%
Power - Max:	300mW
Impedance (Max) (Zzt):	80 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 21V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3

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Introduction:

The BZX84C30-HE3-18 is a single-piece silicon-based low-voltage-drop zener diode designed by Vishay Intertechnology. It is designed to protect sensitive electronic circuits against overvoltage transients in a wide variety of applications. The BZX84C30-HE3-18 is useful for a number of switching and inductive circuits, such as switching-mode power supplies, voltage regulators, and phase controllers.

Design Features and Specifications:

The BZX84C30-HE3-18 zener diode features an integrated bridge rectifier, and it is also constructed using a single monolithic silicon chip. It has a maximum order quantity of 10 pieces, and has a maximum power dissipation of 0.25 W. Its maximum reverse current is 50 mA, and its maximum forward current is 0.6 A, and its maximum reverse voltage is 18 V. It also has a very low maximum forward voltage drop of 0.2 V.

Application Field and Working Principle:

The main application of the BZX84C30-HE3-18 is to provide a low-voltage-drop solution to over-voltage transients. It acts as a protective element that prevents sensitive electronics from being damaged by sudden voltage surges. By a process known as Avalanche breakdown, the diode diverts the excess voltage to a shunt regulator or a ground connection. This limits the voltage to a safe level and prevents any damage to the electronic circuits.The BZX84C30-HE3-18 can also be used as a current limiting device, since it can also be used to block high current surges. It can be used to limit the current flow to a set level and thus safeguard the equipment from any kind of damage. The BZX84C30-HE3-18 can also be used for protection against electrostatic discharge (ESD). It blocks any unidirectional surge of current caused by direct contact and thus serves as a form of insulation from any high voltage.

Conclusion:

The BZX84C30-HE3-18 is a single-piece silicon-based low-voltage-drop zener diode designed by Vishay Intertechnology. It is designed to protect sensitive electronic circuits against overvoltage transients, and can be used in a wide variety of applications, such as switching-mode power supplies, voltage regulators, and phase controllers. The diode works by diverting excess voltage away from sensitive electronics using a process known as Avalanche breakdown. It is also capable of being used as a current limiting device and for protection against ESD.

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