BZX55C20_T50R Encyclopedia Entry

Introduction

The BZX55C20T50R is a diode belonging to the category of Zener diodes. It is commonly used for voltage regulation and protection in electronic circuits due to its specific characteristics. This entry provides an overview of the basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models of the BZX55C20T50R.

Basic Information Overview

• Category: Zener Diode
• Use: Voltage regulation and protection in electronic circuits
• Characteristics:
  • Zener voltage: 20V
  • Power dissipation: 500mW
  • Package type: T-50R
  • Reverse current: 5μA
• Package: Axial leaded package
• Essence: The BZX55C20_T50R is designed to maintain a constant voltage across its terminals when reverse biased.
• Packaging/Quantity: Typically available in reels or bulk packaging with varying quantities.

Specifications

• Zener Voltage (Vz): 20V
• Power Dissipation (Pd): 500mW
• Reverse Current (Ir): 5μA
• Operating Temperature Range: -65°C to +200°C
• Storage Temperature Range: -65°C to +225°C

Detailed Pin Configuration

The BZX55C20_T50R has an axial leaded package with two leads. The cathode is typically marked by a band around one end of the diode body.

Functional Features

• Voltage Regulation: Maintains a constant voltage across its terminals when reverse biased.
• Protection: Safeguards sensitive components in electronic circuits from overvoltage conditions.

Advantages and Disadvantages

Advantages

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

Disadvantages

• Limited power dissipation capability
• Susceptible to thermal runaway under certain conditions

Working Principles

The BZX55C20_T50R operates based on the principle of the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse biased. This allows it to regulate voltage within a circuit and protect sensitive components from voltage spikes.

Detailed Application Field Plans

The BZX55C20_T50R is widely used in various applications including: - Voltage regulators - Overvoltage protection circuits - Signal clamping circuits - Voltage reference circuits

Detailed and Complete Alternative Models

Some alternative models to the BZX55C20_T50R include: - 1N4749A: Zener diode with a 24V voltage rating - BZX85C20: Zener diode with similar characteristics but in a different package - MMBZ5220B: SMD Zener diode with a 20V voltage rating

In conclusion, the BZX55C20_T50R Zener diode offers precise voltage regulation and protection capabilities, making it a crucial component in various electronic circuits.

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