SMCJ120AHE3/57T - Product Encyclopedia Entry

Introduction

The SMCJ120AHE3/57T 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 product, including its basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Electronic Components
• Use: Voltage Transient Suppression
• Characteristics: High Surge Capability, Low Clamping Voltage
• Package: SMC (DO-214AB)
• Essence: Protection of Sensitive Electronic Equipment
• Packaging/Quantity: Tape & Reel, 1500 units per reel

Specifications

• Part Number: SMCJ120AHE3/57T
• Standoff Voltage: 102 V
• Breakdown Voltage: 113 V
• Peak Pulse Power: 1500 W
• Operating Temperature Range: -55°C to +175°C
• RoHS Compliant: Yes

Detailed Pin Configuration

The SMCJ120AHE3/57T follows the standard SMC (DO-214AB) package configuration with two leads.

Functional Features

• Transient Voltage Suppression: Effectively clamps transient overvoltage to a safe level.
• Fast Response Time: Rapid reaction to transient events for enhanced protection.
• Low Leakage Current: Minimizes power consumption during normal operation.

Advantages and Disadvantages

Advantages

• High surge capability for robust protection.
• Low clamping voltage ensures minimal impact on protected circuits.
• RoHS compliant, meeting environmental standards.

Disadvantages

• Relatively higher cost compared to standard diodes.
• Requires careful consideration of reverse standoff voltage to ensure proper protection.

Working Principles

The SMCJ120AHE3/57T operates based on the principle of avalanche breakdown, where it rapidly conducts excess current away from the protected circuit when a transient voltage event occurs. This effectively limits the voltage across the protected circuit to a safe level, preventing damage.

Detailed Application Field Plans

The SMCJ120AHE3/57T is widely used in various applications requiring protection against transient voltage events, including: - Telecommunication Equipment - Industrial Control Systems - Power Supplies - Automotive Electronics - Consumer Electronics

Detailed and Complete Alternative Models

For users seeking alternatives to the SMCJ120AHE3/57T, several comparable TVS diodes are available, including: - SMCJ100AHE3/57T: Lower standoff voltage variant for specific application requirements. - SMCJ130AHE3/57T: Higher standoff voltage variant for extended protection range. - P6SMBJ120CA: Surface mount variant with similar characteristics for compact designs.

In conclusion, the SMCJ120AHE3/57T offers reliable transient voltage suppression for a wide range of electronic applications, ensuring the protection of sensitive equipment from damaging voltage spikes and surges.

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