Vishay Semiconductor Diodes Division
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SM8S28A-3HE3/2D
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SM8S28A-3HE3/2D

Introduction

The SM8S28A-3HE3/2D is a high-performance TVS (transient voltage suppressor) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. This entry provides an overview of the product, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: TVS Diode
  • Use: Protection against voltage transients
  • Characteristics: High performance, low clamping voltage, fast response time
  • Package: SMC (DO-214AB)
  • Essence: Transient voltage suppression
  • Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Standoff Voltage: 28V
  • Breakdown Voltage: 31.2V
  • Peak Pulse Power: 800W
  • Clamping Voltage: 45.7V
  • Operating Temperature Range: -55°C to 150°C
  • RoHS Compliant: Yes

Detailed Pin Configuration

The SM8S28A-3HE3/2D follows the standard SMC (DO-214AB) package configuration with two leads for connection.

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient overvoltage to a safe level.
  • Fast Response Time: Rapid reaction to transient events ensures minimal damage to protected circuits.
  • Low Clamping Voltage: Provides robust protection for sensitive electronics.

Advantages and Disadvantages

Advantages

  • Effective protection against voltage transients
  • Fast response time
  • RoHS compliant

Disadvantages

  • Relatively limited operating temperature range (-55°C to 150°C)

Working Principles

The SM8S28A-3HE3/2D operates based on the principle of avalanche breakdown, where it rapidly diverts excess current away from sensitive components when a transient voltage event occurs. This prevents damage to the connected circuitry by limiting the voltage to a safe level.

Detailed Application Field Plans

The SM8S28A-3HE3/2D is widely used in various applications, including: - Telecommunication equipment - Industrial control systems - Automotive electronics - Consumer electronics - Power supplies

Detailed and Complete Alternative Models

  • SM8S28A: Similar specifications and characteristics
  • SM6T28A: Lower power rating but compatible for certain applications
  • P6SMB28A: Higher power rating and different package type

In conclusion, the SM8S28A-3HE3/2D is a reliable TVS diode offering effective protection against voltage transients, with fast response time and low clamping voltage. Its application spans across diverse industries, and there are alternative models available to suit specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SM8S28A-3HE3/2D v technických řešeních

  1. What is the maximum peak pulse power of SM8S28A-3HE3/2D?

    • The maximum peak pulse power is 800 watts for a 10/1000μs waveform.

  2. What is the breakdown voltage of SM8S28A-3HE3/2D?

    • The breakdown voltage is 28 volts.

  3. What is the clamping voltage of SM8S28A-3HE3/2D?

    • The clamping voltage is 45.7 volts at 14A.

  4. What is the operating temperature range for SM8S28A-3HE3/2D?

    • The operating temperature range is -55°C to +150°C.

  5. What are the typical applications for SM8S28A-3HE3/2D?

    • Typical applications include protection of sensitive electronic equipment from voltage transients induced by lightning, inductive load switching, and electrostatic discharge (ESD).

  6. What is the package type of SM8S28A-3HE3/2D?

    • It comes in a DO-218AB package.

  7. What is the reverse stand-off voltage of SM8S28A-3HE3/2D?

    • The reverse stand-off voltage is 28 volts.

  8. What is the peak pulse current rating of SM8S28A-3HE3/2D?

    • The peak pulse current rating is 50.0A.

  9. What is the response time of SM8S28A-3HE3/2D?

    • The response time is less than 1 picosecond.

  10. What are the recommended PCB layout guidelines for SM8S28A-3HE3/2D?

    • It is recommended to minimize the length and area of high-current traces, provide low-inductance, short ground connections, and use wide traces to connect the device to the circuit.