SMF4L51A - Product Overview

Introduction

The SMF4L51A is a diode belonging to the category of transient voltage suppressors (TVS). It is commonly used for surge protection in electronic circuits to safeguard against voltage spikes and transients. This entry provides an overview of the SMF4L51A, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Transient Voltage Suppressor Diode
• Use: Surge protection in electronic circuits
• Characteristics: Fast response time, low clamping voltage, high surge current capability
• Package: SMA package
• Essence: Protects sensitive electronic components from voltage spikes
• Packaging/Quantity: Typically available in reels of 3000 units

Specifications

• Peak Pulse Power: 400W
• Standoff Voltage: 43.6V
• Breakdown Voltage: 48.4V
• Maximum Clamping Voltage: 70.1V
• Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The SMF4L51A has a standard SMA package with two pins. Pin 1 is the cathode, and pin 2 is the anode.

Functional Features

• Transient Voltage Suppression: Provides rapid response to transient voltage spikes, diverting excess current away from sensitive components.
• Low Clamping Voltage: Ensures that the clamping voltage remains within safe limits during surge events.
• High Surge Current Capability: Can handle high surge currents without degradation.

Advantages and Disadvantages

Advantages

• Effective surge protection for sensitive electronic components
• Fast response time
• Compact SMA package for easy integration

Disadvantages

• Limited to lower power applications compared to larger TVS devices
• May require additional circuitry for comprehensive surge protection in complex systems

Working Principles

When a voltage spike occurs, the SMF4L51A conducts excess current to ground, limiting the voltage across the protected circuit. This rapid response prevents damage to sensitive components by diverting the surge energy away from them.

Detailed Application Field Plans

The SMF4L51A is widely used in various electronic systems, including: - Consumer electronics - Telecommunication equipment - Industrial control systems - Automotive electronics - Power supplies

Detailed and Complete Alternative Models

• SMF3.3A: Standoff Voltage: 3.3V, Breakdown Voltage: 3.67V
• SMF5.0A: Standoff Voltage: 5.0V, Breakdown Voltage: 5.55V
• SMF6.8A: Standoff Voltage: 6.8V, Breakdown Voltage: 7.58V
• SMF10A: Standoff Voltage: 10V, Breakdown Voltage: 11.1V

In conclusion, the SMF4L51A is a crucial component for protecting electronic circuits from voltage surges and transients. Its fast response time, low clamping voltage, and high surge current capability make it an essential part of modern electronic systems.

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