SM8S40AHE3/2D

Introduction

The SM8S40AHE3/2D is a high-performance TVS (transient voltage suppressor) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. This entry provides an overview 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.

Basic Information Overview

• Category: TVS Diode
• Use: Protection against voltage transients
• Characteristics: High surge capability, low clamping voltage
• Package: DO-218AB
• Essence: Provides robust protection for sensitive electronics
• Packaging/Quantity: Tape & Reel, 500 units per reel

Specifications

• Peak Pulse Power: 800W
• Breakdown Voltage: 44V
• Clamping Voltage: 77.4V at 16A
• Operating Temperature Range: -55°C to 150°C
• Storage Temperature Range: -55°C to 175°C

Detailed Pin Configuration

The SM8S40AHE3/2D TVS diode has a DO-218AB package with two pins. Pin 1 is the cathode, and pin 2 is the anode.

Functional Features

• High Surge Capability: Capable of withstanding large surge currents
• Low Clamping Voltage: Provides effective protection by limiting the voltage across the protected circuit

Advantages and Disadvantages

Advantages

• Robust protection against transient voltage events
• High surge capability
• Low clamping voltage

Disadvantages

• Relatively higher cost compared to standard diodes
• Requires careful consideration of installation and layout for optimal performance

Working Principles

The SM8S40AHE3/2D operates based on the principle of avalanche breakdown. When a transient voltage event occurs, the TVS diode rapidly conducts, diverting the excess current away from the protected circuit and clamping the voltage to a safe level.

Detailed Application Field Plans

The SM8S40AHE3/2D is widely used in various applications requiring protection against voltage transients, including: - Power supplies - Communication systems - Industrial equipment - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• SM8S36AHE3/2D: Similar specifications with a lower breakdown voltage of 36V
• SM8S48AHE3/2D: Similar specifications with a higher breakdown voltage of 48V
• SM8S33AHE3/2D: Similar specifications with a lower breakdown voltage of 33V

In conclusion, the SM8S40AHE3/2D TVS diode offers robust protection against transient voltage events, making it an essential component in various electronic systems. Its high surge capability and low clamping voltage make it a reliable choice for safeguarding sensitive electronics. While it may have a higher cost compared to standard diodes, its effectiveness in protecting valuable equipment justifies its usage in critical applications.

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