SMCJ40-E3/57T - Product Encyclopedia Entry

Introduction

The SMCJ40-E3/57T 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 a comprehensive overview of the SMCJ40-E3/57T, 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 SMCJ40-E3/57T belongs to the category of TVS diodes, which are widely used in various electronic applications to protect against voltage surges and transients.

Basic Information Overview

• Use: The SMCJ40-E3/57T is used for surge protection in electronic circuits and systems.
• Characteristics: It offers low clamping voltage, fast response time, and high surge current capability.
• Package: The diode is packaged in a surface-mount SMC package.
• Essence: Its essence lies in providing robust transient voltage protection for sensitive electronic components.
• Packaging/Quantity: The SMCJ40-E3/57T is typically available in reels with a quantity specified by the manufacturer.

Specifications

• Peak Pulse Power: 1500W
• Breakdown Voltage: 44.4V
• Clamping Voltage: 77V at 10A
• Operating Temperature Range: -55°C to +150°C
• Polarity: Unidirectional
• Mounting Type: Surface Mount

Detailed Pin Configuration

The SMCJ40-E3/57T TVS diode has a standard SMC package with two terminals for surface mounting onto PCBs.

Functional Features

• Transient Voltage Suppression: Effectively clamps transient voltages to protect downstream components.
• Fast Response Time: Rapid reaction to transient events ensures minimal impact on the protected circuitry.
• High Surge Current Capability: Capable of handling large surge currents without degradation.

Advantages and Disadvantages

Advantages

• Robust surge protection
• Fast response time
• High surge current capability

Disadvantages

• Unidirectional protection only
• Sensitive to reverse polarity

Working Principles

The SMCJ40-E3/57T operates based on the principle of avalanche breakdown, where it rapidly conducts excess voltage away from the protected circuit, thereby limiting the voltage across the circuit.

Detailed Application Field Plans

The SMCJ40-E3/57T is commonly used in the following applications: - Power supply units - Communication equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• SMCJ5.0A: Similar characteristics with a lower breakdown voltage
• SMCJ78A: Higher breakdown voltage with similar surge current capability
• SMCJ130CA: Higher clamping voltage and surge power handling

In conclusion, the SMCJ40-E3/57T TVS diode offers robust transient voltage protection with fast response times and high surge current capability, making it an essential component in various electronic systems and applications.

Word count: 498