BZX584C3V9-V-G-08

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.9V
Tolerance:	±5%
Power - Max:	200mW
Impedance (Max) (Zzt):	90 Ohms
Current - Reverse Leakage @ Vr:	3µA @ 1V
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SC-79, SOD-523
Supplier Device Package:	SOD-523

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Introduction

Diodes are electronic components that limit current direction and allow current to flow in either direction depending on polarity. Zener diodes are special types of diodes that have a unique property: they will break down when subjected to a voltage of 5V or more above a certain specified threshold voltage. Single diodes are single diodes out of a package of multiple diodes; the BZX584C3V9-V-G-08 single diode is a part of this group commonly used in electronics designs. This technical article will discuss the application field and working principle of the BZX584C3V9-V-G-08 single diode.

BZX584C3V9-V-G-08 Application Field

The BZX584C3V9-V-G-08 diode is used for many applications including voltage clamping, protection circuits and switching applications. In voltage clamping, the diode is used to limit a voltage to a certain maximum level, such a phone line to the industry standard 48V. In protection circuits the diode acts as an open circuit if the voltage exceeds a certain level, thus protecting the components further down the line from over voltage damage. In switching applications, the diode is used to control logic levels by allowing current to pass in one direction and blocking current in the other direction.

BZX584C3V9-V-G-08 Working Principle

The BZX584C3V9-V-G-08 diode is a silicon-based Zener diode which dissipates the excess voltage above a certain specific value. At increasing voltages above the Zener voltage Vz, the diode conducts and dissipates the voltage. The Zener voltage is the voltage that the diode begins to conduct the excess current resulting in a voltage spike across the device and what is commonly referred to as “zener current”. Below the Zener voltage the diode behaves as an open circuit, blocking the current flow and voltage. To achieve stability in the Voltage regulation, the diode requires a certain amount of power from the source which is equal to the Zener diode’s power rating.Additionally, Zener diodes absorb light energy and convert it into electrical energy, providing stable voltage and current levels while protecting the component from overvoltage and electrical spikes. They are also used in the power supply, regulating the voltage spike, such as when the power supply is turned on, the voltage increases slightly and the Zener will dissipate this excessive energy in the form of heat.

Conclusion

The BZX584C3V9-V-G-08 diode is a specialized lightning protection device that can protect damage from lightning and over voltage. The diode is used to protect components from overvoltage, limit voltage to a maximum level, and control logic levels with current direction. Zener diodes also absorb light energy, convert it into electrical energy, protect against overvoltage and spikes, and maintain a constant level of voltage and current. This makes them essential for many applications in electronics design needing overload protection and guaranteeing a stable working voltage for components.

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