SA28A-E3/73 Product Overview

Introduction

The SA28A-E3/73 is a semiconductor product belonging to the category of transient voltage suppressors (TVS). This device is designed to protect sensitive electronic components from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events. The following sections provide a comprehensive overview of the SA28A-E3/73, 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 Suppressors (TVS)
• Use: Protection against voltage transients induced by lightning, ESD, and other transient voltage events
• Characteristics: Fast response time, low clamping voltage, high surge current capability
• Package: DO-214AC (SMA)
• Essence: Semiconductor device for voltage transient suppression
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Peak Pulse Power: 500 W
• Breakdown Voltage Range: 26.7 V to 29.5 V
• Operating Temperature Range: -55°C to +150°C
• Reverse Standoff Voltage: 24 V
• Maximum Clamping Voltage: 38.9 V at 14 A
• RoHS Compliant: Yes

Detailed Pin Configuration

The SA28A-E3/73 features a standard DO-214AC (SMA) package with two pins. Pin 1 is the cathode, and pin 2 is the anode.

Functional Features

• Transient Voltage Suppression: Provides protection against voltage transients by diverting excessive current away from sensitive components.
• Fast Response Time: Reacts quickly to transient voltage events, minimizing the risk of damage to connected devices.
• Low Clamping Voltage: Limits the voltage across protected components during transient events, reducing the risk of overvoltage damage.

Advantages and Disadvantages

Advantages

• Effective protection against transient voltage events
• Fast response time
• RoHS compliant

Disadvantages

• Limited breakdown voltage range compared to some alternative models
• May require additional circuitry for comprehensive surge protection in high-risk environments

Working Principles

The SA28A-E3/73 operates based on the principle of avalanche breakdown. When a transient voltage event occurs, the device rapidly switches into a low impedance state, shunting excess current away from the protected circuit. This action effectively limits the voltage across the protected components, safeguarding them from potential damage.

Detailed Application Field Plans

The SA28A-E3/73 is commonly used in various applications requiring protection against transient voltage events, including: - Consumer electronics - Telecommunications equipment - Industrial automation systems - Automotive electronics - Power supplies

Detailed and Complete Alternative Models

Several alternative models to the SA28A-E3/73 include: - SA5.0A-E3/54 - SA6.0A-E3/54 - SA8.0A-E3/54 - SA10A-E3/54 - SA15A-E3/54

These alternative models offer varying breakdown voltage ranges and peak pulse power capabilities, providing flexibility in selecting the most suitable TVS device for specific application requirements.

In conclusion, the SA28A-E3/73 transient voltage suppressor offers effective protection against transient voltage events, with its fast response time and low clamping voltage making it a valuable component in safeguarding sensitive electronic circuits. While it has certain limitations, its performance and reliability make it a popular choice in diverse application fields.

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