SMDJ78A - Product Overview and Specifications

Introduction

The SMDJ78A is a diode belonging to the category of transient voltage suppressors (TVS). It is designed to protect sensitive electronics from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events. This entry provides an overview of the SMDJ78A, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Transient Voltage Suppressor Diode
• Use: Protection against voltage transients induced by lightning, ESD, and other transient voltage events
• Characteristics: Fast response time, low clamping voltage, high surge current capability
• Package: Surface Mount
• Essence: Protecting sensitive electronics from voltage transients
• Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

• Part Number: SMDJ78A
• Peak Pulse Power: 3000W
• Breakdown Voltage: 78V
• Operating Temperature Range: -55°C to +150°C
• Reverse Standoff Voltage: 66.3V
• Maximum Clamping Voltage: 106V
• Peak Pulse Current: 50A

Detailed Pin Configuration

The SMDJ78A typically follows a standard surface mount diode package with two terminals for connection. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

• Fast response time to transient voltage events
• Low clamping voltage to protect downstream components
• High surge current capability for robust protection

Advantages and Disadvantages

Advantages

• Effective protection against voltage transients
• Fast response time
• Low clamping voltage
• High surge current capability

Disadvantages

• Higher cost compared to traditional diodes
• Surface mount package may require specialized soldering techniques

Working Principles

The SMDJ78A operates by diverting excess transient voltage away from sensitive electronics, thereby limiting the voltage that reaches the protected components. When a transient event occurs, the diode rapidly conducts, providing a low impedance path for the excess energy to be safely dissipated.

Detailed Application Field Plans

The SMDJ78A finds extensive use in various applications, including: - Telecommunication equipment - Industrial control systems - Automotive electronics - Power supplies - Consumer electronics

Detailed and Complete Alternative Models

• Alternative Model 1: SMDJ5.0A
  • Breakdown Voltage: 5V
  • Peak Pulse Power: 3000W
  • Package: Surface Mount
• Alternative Model 2: SMDJ15A
  • Breakdown Voltage: 15V
  • Peak Pulse Power: 3000W
  • Package: Surface Mount
• Alternative Model 3: SMDJ30A
  • Breakdown Voltage: 30V
  • Peak Pulse Power: 3000W
  • Package: Surface Mount

In conclusion, the SMDJ78A transient voltage suppressor diode offers effective protection against voltage transients and finds widespread use across various industries.

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