1SMA20AT3G

Product Overview

Category

The 1SMA20AT3G belongs to the category of surface mount silicon Zener diodes.

Use

It is commonly used for voltage regulation and transient suppression in electronic circuits.

Characteristics

• Voltage: 20V
• Power Dissipation: 1.5W
• Package: SMA
• Reverse Standoff Voltage: 17.8V
• Forward Voltage: 1.5V
• Reverse Leakage Current: 1μA
• Operating Temperature Range: -65°C to +150°C

Packaging/Quantity

The 1SMA20AT3G is typically available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

• Zener Voltage: 19V to 21V
• Maximum Reverse Leakage Current: 1μA
• Maximum Reverse Voltage: 17.8V
• Maximum Forward Voltage: 1.5V
• Power Dissipation: 1.5W
• Operating Temperature Range: -65°C to +150°C

Detailed Pin Configuration

The 1SMA20AT3G has two pins, with the anode connected to the positive terminal and the cathode connected to the negative terminal.

Functional Features

• Voltage Regulation: The 1SMA20AT3G provides stable voltage regulation within its specified range.
• Transient Suppression: It effectively suppresses transient voltage spikes to protect sensitive electronic components.

Advantages

• High Power Dissipation: Capable of dissipating up to 1.5W of power.
• Wide Operating Temperature Range: Suitable for use in extreme temperature conditions.

Disadvantages

• Limited Voltage Range: The Zener voltage range is relatively narrow compared to some other Zener diodes.
• Package Size: The SMA package may be larger than other surface mount packages, limiting space-constrained applications.

Working Principles

The 1SMA20AT3G operates based on the principle of the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse-biased within its specified voltage range.

Detailed Application Field Plans

The 1SMA20AT3G is commonly used in the following applications: - Voltage Regulation in Power Supplies - Overvoltage Protection in Electronic Circuits - Signal Clipping and Limiting

Detailed and Complete Alternative Models

Some alternative models to the 1SMA20AT3G include: - 1N4744A: 20V Zener Diode - BZX85C20: 20V Silicon Planar Power Zener Diode - MMSZ5245B: 20V Surface Mount Zener Diode

In conclusion, the 1SMA20AT3G is a surface mount silicon Zener diode with a voltage rating of 20V, suitable for voltage regulation and transient suppression in various electronic applications. Its characteristics, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models make it a versatile component in electronic circuit design.

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