BZX884-B4V3,315 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	4.3V
Tolerance:	±2%
Power - Max:	250mW
Impedance (Max) (Zzt):	90 Ohms
Current - Reverse Leakage @ Vr:	3µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOD-882
Supplier Device Package:	DFN1006-2
Base Part Number:	BZX884B4V3

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Introduction

The BZX884-B4V3,315 is a single Zener diode specifically designed for use in applications that require higher power levels or higher voltage than a traditional small signal diode. This diode has excellent electrical characteristics, which make it suitable for a variety of uses. In this article, we will discuss the application field and working principle of the BZX884-B4V3,315.

Applications

The BZX884-B4V3,315 is a versatile Zener diode that can be used in a number of applications. It is primarily used in applications that require a higher power level or higher voltage than a standard small signal diode. Some common applications of the BZX884-B4V3,315 include protection from overcurrent or overvoltage, transient voltage suppression, voltage clamps, and voltage regulation.

Overcurrent and Overvoltage Protection

The BZX884-B4V3,315 can be used to protect electrical components and circuits from damage caused by sudden increases in current or voltage. In these applications, the diode acts as a short circuit, allowing a path for the current to flow in one direction while blocking current flow in the opposite direction. By limiting the current and preventing an overload, the BZX884-B4V3,315 helps protect the connected components and circuits from damage.

Transient Voltage Suppression

The BZX884-B4V3,315 can also be used to suppress the effects of transients, which are short-lived, sudden increases in voltage caused by electrical noise or interference. When a transient occurs, the diode quickly conducts current and then quickly turns off, preventing the surge from damaging nearby components. The diode also helps reduce electromagnetic interference, which could otherwise degrade performance.

Voltage Clamps and Regulation

The BZX884-B4V3,315 is commonly used as a voltage clamp or regulator. In these applications, the diode acts like a series switch, connecting or disconnecting a circuit based on the input voltage. For example, in an overvoltage protection circuit, the BZX884-B4V3,315 would turn off the circuit when it detects an overvoltage and turn it back on when the voltage levels return to normal. Similarly, in a voltage regulator circuit, it would maintain a constant voltage by quickly turning on and off.

Working Principle

The BZX884-B4V3,315 is a Zener diode, which works by allowing current to pass through it in one direction and blocking the current in the other. When the voltage across the diode reaches the breakdown voltage, the current begins to flow in both directions, allowing the diode to quickly conduct current and preventing an overvoltage from damaging connected components. The reverse breakdown voltage can be adjusted by adjusting the doping concentration in the junction, allowing the diode to be tuned for use in specific applications.

Conclusion

The BZX884-B4V3,315 is a versatile Zener diode that can be used in a variety of applications. It is most commonly used for protection from overcurrent or overvoltage, transient voltage suppression, voltage clamps, and voltage regulation. It works by allowing current to flow in one direction, blocking current in the other, and then quickly conducting current when the threshold voltage is reached. Understanding the working principle and application field of this diode is essential for ensuring its proper use in any application.

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