BZX84C51-G3-18

Product Overview

Category

The BZX84C51-G3-18 belongs to the category of Zener diodes, which are semiconductor devices designed to allow current to flow in the forward direction like a normal diode, but also in the reverse direction if the voltage is larger than the breakdown voltage known as the Zener voltage.

Use

This Zener diode is commonly used for voltage regulation and overvoltage protection in various electronic circuits.

Characteristics

• Voltage Regulation: The BZX84C51-G3-18 provides stable voltage output under varying load conditions.
• Overvoltage Protection: It can protect sensitive components from excessive voltage spikes.
• Small Package: This diode comes in a small SOT-23 package, making it suitable for compact circuit designs.
• Low Leakage Current: It exhibits low leakage current, ensuring efficient performance.

Package

The BZX84C51-G3-18 is available in a SOT-23 package, which is a small surface-mount device package.

Essence

The essence of this Zener diode lies in its ability to maintain a constant voltage across its terminals, providing stability and protection to electronic circuits.

Packaging/Quantity

It is typically supplied in reels or tape and reel packaging, with quantities varying based on manufacturer specifications.

Specifications

• Zener Voltage: 51V
• Power Dissipation: 225mW
• Forward Voltage: 0.9V
• Reverse Leakage Current: 100nA
• Operating Temperature Range: -65°C to +150°C

Detailed Pin Configuration

The BZX84C51-G3-18 Zener diode has three pins: Cathode (K), Anode (A), and No Connection (NC). The cathode is marked with a bar adjacent to it on the package.

Functional Features

• Voltage Regulation: It maintains a constant voltage drop across its terminals, ensuring a stable output.
• Overvoltage Protection: It conducts when the voltage exceeds the specified Zener voltage, safeguarding connected components.
• Compact Design: Its small form factor makes it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• Compact size
• Low leakage current

Disadvantages

• Limited power dissipation capability
• Susceptible to thermal runaway at high currents

Working Principles

The BZX84C51-G3-18 operates based on the Zener effect, where it allows current to flow in the reverse-biased direction once the voltage reaches its Zener voltage. This characteristic enables it to regulate voltage and protect circuits from overvoltage conditions.

Detailed Application Field Plans

Voltage Regulation

The diode can be used in voltage regulator circuits to maintain a stable output voltage despite fluctuations in input voltage or load variations.

Overvoltage Protection

It is employed in electronic systems to protect sensitive components from transient voltage spikes and surges.

Signal Clipping

In audio and communication circuits, the Zener diode can be utilized for signal clipping and limiting purposes.

Detailed and Complete Alternative Models

Some alternative models to the BZX84C51-G3-18 include: - BZX84C47-G3-18 - BZX84C56-G3-18 - BZX84C62-G3-18

These alternatives offer different Zener voltages while sharing similar characteristics and package types.

This comprehensive entry provides an in-depth understanding of the BZX84C51-G3-18 Zener diode, covering its specifications, functional features, application fields, and alternative models.