SMAJ78A-TP

Introduction

The SMAJ78A-TP is a component belonging to the category of transient voltage suppressor diodes. This entry provides an overview of its basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Basic Information Overview

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

Specifications

• Part Number: SMAJ78A-TP
• Peak Pulse Power: 400W
• Breakdown Voltage: 78V
• Operating Voltage: 64.1V
• Clamping Voltage: 103V
• Peak Pulse Current: 10.5A
• Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The SMAJ78A-TP typically has two pins, with the cathode marked with a line on the body of the diode.

Functional Features

• Transient Voltage Suppression: Quickly clamps voltage spikes to protect downstream components.
• Fast Response Time: Rapid reaction to transient events ensures minimal impact on the circuit.

Advantages

• Effective Protection: Safeguards sensitive electronics from voltage surges.
• Compact Design: Small form factor allows for easy integration into circuit layouts.

Disadvantages

• Voltage Limitation: Limited to specific voltage ranges, may not be suitable for higher voltage applications.
• Heat Dissipation: High surge currents can lead to heat generation, requiring thermal management.

Working Principles

When a transient voltage spike occurs, the SMAJ78A-TP conducts and clamps the voltage to a safe level, diverting excess energy away from the protected circuit.

Detailed Application Field Plans

• Telecommunications: Protects communication equipment from lightning-induced surges.
• Automotive Electronics: Guards vehicle electronics from voltage transients caused by load dumps or jump starts.
• Industrial Control Systems: Shields control circuitry from power line disturbances and switching transients.

Detailed and Complete Alternative Models

• P6SMBJ78CA: Similar specifications, different package (DO-214AA)
• 1.5SMCJ78A: Higher peak pulse power rating, similar breakdown voltage

In conclusion, the SMAJ78A-TP transient voltage suppressor diode offers effective protection against voltage transients in various electronic applications. Its compact design, fast response time, and high surge current capability make it a valuable component in safeguarding sensitive electronics.

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