SMBJ40CA-TR

Introduction

The SMBJ40CA-TR is a transient voltage suppressor diode designed to protect sensitive electronic devices from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events. This entry provides an overview of the SMBJ40CA-TR, including its product category, basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Product Category

The SMBJ40CA-TR belongs to the category of transient voltage suppressor diodes, which are widely used in electronic circuits to protect semiconductor devices from voltage spikes and surges.

Basic Information Overview

• Use: The SMBJ40CA-TR is used to provide overvoltage protection for sensitive electronics in various applications.
• Characteristics: It offers low clamping voltage, fast response time, and high surge current capability.
• Package: The SMBJ40CA-TR is available in a surface mount DO-214AA (SMB) package.
• Essence: Its essence lies in providing robust transient voltage protection for electronic circuits.
• Packaging/Quantity: It is typically packaged in reels or tubes, with varying quantities depending on the manufacturer's specifications.

Specifications

• Voltage Rating: 40V
• Peak Pulse Power: 600W
• Operating Temperature Range: -55°C to +150°C
• Breakdown Voltage: 44.4V to 49.1V
• Reverse Standoff Voltage: 40V
• Maximum Clamping Voltage: 64.5V at 77.5A

Detailed Pin Configuration

The SMBJ40CA-TR has a standard surface mount diode configuration with two terminals for connection to the circuit board.

Functional Features

• Transient Voltage Suppression: Provides effective suppression of voltage transients to protect downstream components.
• Fast Response Time: Rapidly clamps transient voltages to safe levels, minimizing the risk of damage to sensitive electronics.
• Low Clamping Voltage: Ensures that the protected circuitry is exposed to minimal voltage stress during transient events.

Advantages and Disadvantages

Advantages

• Effective protection against voltage transients
• Fast response time
• Compact surface mount package
• High surge current capability

Disadvantages

• Limited to specific voltage ratings
• May require additional circuitry for comprehensive overvoltage protection

Working Principles

The SMBJ40CA-TR operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage across it exceeds the breakdown voltage. This effectively diverts the transient energy away from the protected circuitry.

Detailed Application Field Plans

The SMBJ40CA-TR finds extensive use in various applications, including: - Power supply units - Communication equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• SMBJ5.0A: 5.0V rating
• SMBJ12A: 12V rating
• SMBJ24A: 24V rating
• SMBJ58A: 58V rating
• SMBJ110A: 110V rating

In conclusion, the SMBJ40CA-TR is a vital component in protecting electronic circuits from transient voltage events, offering a balance of performance and reliability. Its specifications, functional features, and application versatility make it a crucial element in modern electronic designs.

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