SMCJ78AE3/TR13 - Product Overview and Analysis

Introduction

The SMCJ78AE3/TR13 is a transient voltage suppressor diode designed to protect electronic circuits from overvoltage transients. This entry will provide an in-depth analysis of the product, including its category, use, characteristics, package, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Product Category and Use

Category: Transient Voltage Suppressor Diode
Use: Protection against overvoltage transients in electronic circuits

Basic Information Overview

• Characteristics: Fast response time, low clamping voltage, high surge current capability
• Package: DO-214AB (SMC)
• Essence: Provides robust protection for sensitive electronic components
• Packaging/Quantity: Available in tape and reel packaging, quantity varies by manufacturer

Specifications

• Voltage - Reverse Standoff (Typ): 78V
• Voltage - Breakdown (Min): 86.7V
• Clamping Voltage @ Ipp: 126V
• Peak Pulse Current: 30.6A
• Power Dissipation (Max): 1.5kW

Detailed Pin Configuration

The SMCJ78AE3/TR13 has a standard SMC package with two leads. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

• Fast Response Time: Rapid reaction to overvoltage transients
• Low Clamping Voltage: Limits the voltage across the protected circuit
• High Surge Current Capability: Ability to handle large transient currents

Advantages and Disadvantages

Advantages: - Effective protection against overvoltage events - Compact SMC package for space-constrained applications - High surge current capability

Disadvantages: - Higher clamping voltage compared to some alternative models - Limited power dissipation capability

Working Principles

When an overvoltage transient occurs, the SMCJ78AE3/TR13 conducts current and clamps the voltage to a safe level, protecting the downstream circuitry from damage. This is achieved through the rapid response of the diode to the transient event.

Detailed Application Field Plans

The SMCJ78AE3/TR13 is commonly used in various electronic systems, including: - Power supplies - Communication equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the SMCJ78AE3/TR13 include: - P6KE82CA: Similar voltage rating and package type - 1.5SMC75CA: Comparable characteristics and performance - SA78CA: Alternative option with lower clamping voltage

In conclusion, the SMCJ78AE3/TR13 transient voltage suppressor diode offers effective protection against overvoltage transients in a compact SMC package. Its fast response time, low clamping voltage, and high surge current capability make it suitable for a wide range of electronic applications. However, designers should consider alternative models based on specific requirements such as clamping voltage and power dissipation capabilities.

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