BZX84C18ET1 - Encyclopedia Entry

Product Overview

The BZX84C18ET1 belongs to the category of Zener diodes and is commonly used for voltage regulation and protection in electronic circuits. This diode possesses unique characteristics that make it suitable for a wide range of applications. It is typically packaged in a small, surface-mount package and is available in various quantities to meet different project requirements.

Specifications

• Voltage: 18V
• Power Dissipation: 250mW
• Zener Voltage Tolerance: ±5%
• Operating Temperature Range: -65°C to +150°C
• Package Type: SOT-23
• Quantity: Available in reels of 3000 units

Detailed Pin Configuration

The BZX84C18ET1 Zener diode has three pins: anode, cathode, and no connection (NC). The anode is connected to the positive terminal of the circuit, the cathode is connected to the negative terminal, and the NC pin is left unconnected.

Functional Features

• Voltage Regulation: The diode maintains a constant voltage across its terminals, providing stability in electronic circuits.
• Overvoltage Protection: It acts as a safeguard against excessive voltage spikes, protecting sensitive components.
• Compact Design: Its small form factor makes it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• Compact size
• Overvoltage protection

Disadvantages

• Limited power dissipation capability
• Sensitivity to temperature variations

Working Principles

The BZX84C18ET1 operates based on the principle of the Zener effect, where it allows current to flow in reverse bias once the voltage reaches its specified breakdown voltage. This characteristic enables it to regulate voltage and protect the circuit from overvoltage conditions.

Detailed Application Field Plans

The BZX84C18ET1 finds extensive use in various electronic applications, including: - Voltage regulation in power supplies - Overvoltage protection in communication systems - Signal clamping in audio amplifiers - Voltage reference in sensor circuits

Detailed and Complete Alternative Models

• BZX84C15ET1: 15V Zener diode with similar characteristics
• BZX84C22ET1: 22V Zener diode offering a different voltage option
• BZX84C12ET1: 12V Zener diode suitable for lower voltage applications

In conclusion, the BZX84C18ET1 Zener diode serves as a reliable component for voltage regulation and protection in diverse electronic circuits, offering precise control and compact design. Its application spans across multiple industries, making it a versatile choice for engineers and designers.

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