Vishay Semiconductor Diodes Division
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BZX55C18-TR
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BZX55C18-TR

Introduction

The BZX55C18-TR is a diode belonging to the category of Zener diodes. This component is widely used in electronic circuits for voltage regulation and protection against voltage spikes. It possesses unique characteristics, packaging, and quantity specifications that make it suitable for various applications.

Basic Information Overview

  • Category: Zener Diode
  • Use: Voltage regulation and protection
  • Characteristics: Reverse breakdown voltage, low impedance, temperature stability
  • Package: DO-35
  • Essence: Semiconductor material with controlled reverse breakdown voltage
  • Packaging/Quantity: Available in tape and reel packaging, quantity varies by manufacturer

Specifications

  • Voltage Rating: 18V
  • Power Dissipation: 500mW
  • Zener Impedance: 40Ω
  • Operating Temperature Range: -65°C to +200°C
  • Tolerance: ±5%

Detailed Pin Configuration

The BZX55C18-TR has two pins, with the cathode connected to the semiconductor's N-type material and the anode connected to the P-type material.

Functional Features

  • Voltage Regulation: Maintains a constant voltage across its terminals.
  • Voltage Protection: Safeguards sensitive components from voltage spikes.
  • Temperature Stability: Exhibits stable performance across a wide temperature range.

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • Compact size
  • Wide operating temperature range

Disadvantages

  • Limited power dissipation capability
  • Tolerance may affect precision in some applications

Working Principles

The BZX55C18-TR operates based on the principle of the Zener effect, where it maintains a nearly constant voltage drop across its terminals when reverse biased.

Detailed Application Field Plans

The BZX55C18-TR finds extensive use in the following applications: 1. Voltage regulation in power supplies 2. Overvoltage protection in electronic circuits 3. Signal clamping and limiting 4. Voltage reference in precision instruments

Detailed and Complete Alternative Models

  • BZX55C16-TR: Lower voltage rating
  • BZX55C20-TR: Higher voltage rating
  • BZX85C18-TR: Higher power dissipation capability

In conclusion, the BZX55C18-TR Zener diode offers precise voltage regulation and protection in a compact package, making it an essential component in various electronic circuits.

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技術ソリューションにおける BZX55C18-TR の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the BZX55C18-TR?

    • The BZX55C18-TR is a 500mW Zener diode with a voltage rating of 18V, commonly used for voltage regulation and protection in electronic circuits.

  2. What are the typical applications of BZX55C18-TR?

    • The BZX55C18-TR is often used in voltage reference circuits, voltage clamping, and overvoltage protection in various electronic devices and systems.

  3. What is the maximum power dissipation of BZX55C18-TR?

    • The maximum power dissipation of the BZX55C18-TR is 500mW, making it suitable for low to moderate power applications.

  4. What is the voltage tolerance of BZX55C18-TR?

    • The voltage tolerance of the BZX55C18-TR is typically ±5%, ensuring reliable and accurate voltage regulation.

  5. Can BZX55C18-TR be used for reverse polarity protection?

    • Yes, the BZX55C18-TR can be employed for reverse polarity protection due to its Zener breakdown characteristics.

  6. What is the temperature coefficient of BZX55C18-TR?

    • The temperature coefficient of the BZX55C18-TR is approximately 0.05% per °C, which indicates its stability over a range of temperatures.

  7. Is BZX55C18-TR suitable for automotive applications?

    • Yes, the BZX55C18-TR is often utilized in automotive electronics for voltage regulation and transient protection.

  8. What is the maximum forward voltage of BZX55C18-TR?

    • The maximum forward voltage of the BZX55C18-TR is typically around 1.2V at a specified current, which is important for understanding its behavior in forward-biased conditions.

  9. Can BZX55C18-TR be used in voltage divider circuits?

    • Yes, the BZX55C18-TR can be integrated into voltage divider networks to achieve specific output voltages within a circuit.

  10. What are the key considerations when designing with BZX55C18-TR?

    • When using the BZX55C18-TR, it's important to consider its power dissipation, voltage derating with temperature, and its placement within the circuit to ensure optimal performance and reliability.