1N4742A-TR

Introduction

The 1N4742A-TR is a semiconductor device belonging to the category of Zener diodes. This component is widely used in electronic circuits for voltage regulation and protection due to its unique characteristics. In this entry, we will provide an overview of the basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models of the 1N4742A-TR.

Basic Information Overview

• Category: Zener Diode
• Use: Voltage Regulation and Protection
• Characteristics: Reverse Breakdown Voltage, Power Dissipation, Temperature Coefficient
• Package: DO-41
• Essence: Semiconductor Device for Voltage Regulation
• Packaging/Quantity: Tape & Reel, 5000 units per reel

Specifications

• Voltage - Zener (Nom) (Vz): 12V
• Power - Max: 1W
• Tolerance: ±5%
• Temperature Coefficient: 5mV/°C
• Operating and Storage Temperature Range: -65°C to +200°C

Detailed Pin Configuration

The 1N4742A-TR has two leads with the following pin configuration: - Anode (A): Connected to the positive terminal of the circuit - Cathode (K): Connected to the negative terminal of the circuit

Functional Features

• Voltage Regulation: Maintains a constant output voltage under varying input conditions
• Overvoltage Protection: Safeguards sensitive components by limiting the voltage across them
• Stability: Provides stable voltage references in precision circuits

Advantages and Disadvantages

Advantages

• Precise Voltage Regulation
• Compact Size
• Easy Integration into Circuit Designs
• Cost-Effective Solution for Voltage Regulation

Disadvantages

• Limited Power Dissipation Capability
• Sensitivity to Temperature Changes
• Voltage Tolerance may not be Suitable for High-Precision Applications

Working Principles

The 1N4742A-TR operates based on the principle of the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse-biased at or above its breakdown voltage. This allows it to regulate the voltage in a circuit by diverting excess current when the voltage exceeds the specified level.

Detailed Application Field Plans

The 1N4742A-TR finds extensive use in various applications, including: - Voltage Regulation in Power Supplies - Overvoltage Protection in Electronic Circuits - Voltage References in Precision Instrumentation - Signal Clipping and Limiting in Communication Systems

Detailed and Complete Alternative Models

Several alternative models to the 1N4742A-TR include: - 1N4732A-TR (4.7V Zener Voltage) - 1N4756A-TR (47V Zener Voltage) - BZX85C12 (12V Zener Voltage)

In conclusion, the 1N4742A-TR Zener diode serves as a crucial component in electronic circuits, providing precise voltage regulation and overvoltage protection. Its compact size and cost-effectiveness make it a popular choice for various applications, despite its limitations in power dissipation and temperature sensitivity.

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