BZX85C39 Diode Encyclopedia Entry

Introduction

The BZX85C39 diode is a crucial component in electronic circuits, belonging to the category of Zener diodes. 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 BZX85C39 diode.

Basic Information Overview

• Category: Zener diode
• Use: Voltage regulation and protection in electronic circuits
• Characteristics: Reverse breakdown voltage of 39V, low impedance, high reliability
• Package: Axial leaded package
• Essence: Regulates voltage by maintaining a constant output voltage under varying input voltages
• Packaging/Quantity: Typically available in reels or bulk packaging

Specifications

• Reverse Breakdown Voltage (Vz): 39V
• Power Dissipation (Ptot): 1.3W
• Forward Voltage (VF): 1.5V
• Operating Temperature Range: -65°C to +175°C
• Zener Impedance (ZZT): 8Ω
• Maximum Surge Current (IZSM): 40A

Detailed Pin Configuration

The BZX85C39 diode has an axial leaded package with two leads. The cathode is denoted by a band on the body of the diode.

Functional Features

• Voltage Regulation: Maintains a constant output voltage despite variations in input voltage.
• Overvoltage Protection: Safeguards sensitive components in a circuit by limiting the voltage across them.

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• High reliability
• Low impedance

Disadvantages

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

Working Principles

The BZX85C39 diode operates based on the principle of the Zener effect. When the reverse voltage across the diode reaches its breakdown voltage, it starts conducting, allowing current to flow in the reverse direction and maintaining a nearly constant voltage drop across it.

Detailed Application Field Plans

The BZX85C39 diode finds extensive use in various applications, including: - Voltage regulation in power supplies - Overvoltage protection in electronic circuits - Voltage reference in precision measurement equipment

Detailed and Complete Alternative Models

Several alternative models to the BZX85C39 diode include: - 1N4737A: 37V Zener diode - BZX79C39: 39V Zener diode - 1N5226B: 39V Zener diode - BZX55C39: 39V Zener diode

In conclusion, the BZX85C39 diode is a vital component in electronic circuits, providing precise voltage regulation and overvoltage protection. Its characteristics, working principles, and application versatility make it indispensable in various electronic systems.

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