ERZ-V20D821 Product Overview

Introduction

The ERZ-V20D821 belongs to the category of varistors, which are electronic components used to protect circuits from excessive voltage surges. This entry provides a comprehensive overview of the ERZ-V20D821, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Varistors
• Use: Protection against voltage surges
• Characteristics: High energy absorption capacity, fast response time
• Package: Disc type
• Essence: Zinc oxide-based
• Packaging/Quantity: Bulk packaging, quantity varies based on supplier

Specifications

• Voltage Rating: 820V
• Peak Current: 20kA
• Energy Absorption: 360J
• Operating Temperature Range: -40°C to 85°C
• Dimensions: 20mm diameter

Detailed Pin Configuration

The ERZ-V20D821 varistor has a standard disc shape with two axial leads for connection to the circuit. The detailed pin configuration is as follows: - Lead 1: Connection point for positive terminal - Lead 2: Connection point for negative terminal

Functional Features

• Voltage Clamping: Rapidly absorbs excessive voltage to protect connected devices
• Transient Suppression: Effectively suppresses transient overvoltage spikes
• Reliability: Long operational life and stable performance under varying conditions

Advantages and Disadvantages

Advantages

• High energy absorption capacity
• Fast response time
• Wide operating temperature range

Disadvantages

• Limited protection against sustained overvoltage conditions
• Bulkier compared to some other surge protection devices

Working Principles

The ERZ-V20D821 operates based on the principle of nonlinear resistance. When subjected to a voltage surge, the varistor's resistance decreases significantly, allowing it to divert excess current away from the protected circuit, thereby safeguarding sensitive components.

Detailed Application Field Plans

The ERZ-V20D821 is commonly used in various applications, including: - Power distribution systems - Telecommunication equipment - Industrial machinery - Consumer electronics

Detailed and Complete Alternative Models

Several alternative models to the ERZ-V20D821 include: - ERZ-V14D821: Lower voltage rating, suitable for less demanding applications - ERZ-V20D102: Higher energy absorption capacity, ideal for high-power systems - ERZ-V07D471: Smaller form factor, suitable for space-constrained designs

In conclusion, the ERZ-V20D821 varistor offers robust protection against voltage surges and finds widespread use across diverse industries due to its reliability and performance.

[Word Count: 411]