SMCJ78AHE3/9AT - Product Encyclopedia Entry

Introduction

The SMCJ78AHE3/9AT is a semiconductor product belonging to the category of transient voltage suppressor diodes. This entry provides an overview of the basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models of the SMCJ78AHE3/9AT.

Basic Information Overview

• Category: Transient Voltage Suppressor Diodes
• Use: Protection against voltage transients in electronic circuits
• Characteristics: Fast response time, low clamping voltage, high surge current capability
• Package: DO-214AB (SMC), SMA Flat Lead
• Essence: Provides protection to sensitive electronic components from voltage spikes
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Part Number: SMCJ78AHE3/9AT
• Peak Pulse Power: 1500W
• Breakdown Voltage Range: 64.4V to 71.1V
• Operating Temperature Range: -55°C to +175°C
• RoHS Compliant: Yes
• Lead-Free Status: Lead-free

Detailed Pin Configuration

The SMCJ78AHE3/9AT has two pins, with the anode connected to one end and the cathode connected to the other. The pin configuration is as follows: - Anode (A) - Pin 1 - Cathode (K) - Pin 2

Functional Features

• Transient Voltage Suppression: Provides protection by clamping voltage during transient events
• Fast Response Time: Reacts quickly to transient voltage spikes
• Low Clamping Voltage: Limits the voltage across the protected circuit
• High Surge Current Capability: Can handle large surge currents without damage

Advantages and Disadvantages

Advantages

• Effective protection against voltage transients
• Fast response time ensures minimal impact on the protected circuit
• Low clamping voltage helps in preventing damage to sensitive components

Disadvantages

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

Working Principles

The SMCJ78AHE3/9AT operates based on the principle of avalanche breakdown. When a transient voltage spike occurs, the diode rapidly conducts, diverting the excess current away from the protected circuit and limiting the voltage across it.

Detailed Application Field Plans

The SMCJ78AHE3/9AT is commonly used in various electronic systems, including: - Power supplies - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the SMCJ78AHE3/9AT include: - P6KE68CA - 1.5KE75CA - SMBJ70CA - 5.0SMDJ78CA

In conclusion, the SMCJ78AHE3/9AT transient voltage suppressor diode offers effective protection against voltage transients in electronic circuits. Its fast response time, low clamping voltage, and high surge current capability make it suitable for a wide range of applications in various industries.

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