Vishay Semiconductor Diodes Division
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1.5KA18HE3/51
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1.5KA18HE3/51 Product Overview

Introduction

The 1.5KA18HE3/51 is a high-performance TVS (Transient Voltage Suppressor) diode designed to protect sensitive electronics from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events.

Basic Information Overview

  • Category: Electronic Component
  • Use: Protection against voltage transients
  • Characteristics: High surge capability, low clamping voltage, fast response time
  • Package: DO-201AD
  • Essence: Safeguarding electronic circuits from voltage spikes
  • Packaging/Quantity: Available in reels or bulk packaging

Specifications

  • Peak Pulse Power: 1500W
  • Standoff Voltage: 18V
  • Breakdown Voltage: 20V
  • Clamping Voltage: 29.2V at 1A
  • Operating Temperature Range: -55°C to +175°C

Detailed Pin Configuration

The 1.5KA18HE3/51 follows the standard pin configuration for DO-201AD package: - Pin 1: Anode - Pin 2: Cathode

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 events, minimizing the risk of damage to connected devices.
  • High Surge Capability: Capable of withstanding high surge currents, making it suitable for demanding applications.

Advantages and Disadvantages

Advantages

  • Effective protection against voltage transients
  • Fast response time
  • High surge capability

Disadvantages

  • Clamping voltage may be relatively high for some sensitive applications

Working Principles

When a transient voltage event occurs, the 1.5KA18HE3/51 conducts excess current to ground, limiting the voltage across the protected circuit. This action helps prevent damage to sensitive electronic components.

Detailed Application Field Plans

The 1.5KA18HE3/51 is commonly used in various applications, including: - Telecommunication equipment - Industrial control systems - Automotive electronics - Consumer electronics - Power supplies

Detailed and Complete Alternative Models

  • 1.5KE18CA: Similar TVS diode with slightly different specifications
  • P6SMB18CA: Surface mount TVS diode with comparable characteristics
  • SMAJ18A: Another alternative TVS diode option

In conclusion, the 1.5KA18HE3/51 TVS diode offers robust protection against voltage transients, making it an essential component in safeguarding sensitive electronic circuits across diverse industries.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 1.5KA18HE3/51 v technických řešeních

Sure, here are 10 common questions and answers related to the application of 1.5KA18HE3/51 in technical solutions:

  1. What is the maximum forward voltage of 1.5KA18HE3/51?

    • The maximum forward voltage of 1.5KA18HE3/51 is typically 1.5V at 1A.

  2. What is the maximum reverse current of 1.5KA18HE3/51?

    • The maximum reverse current of 1.5KA18HE3/51 is typically 5µA at its rated voltage.

  3. What is the peak pulse power dissipation of 1.5KA18HE3/51?

    • The peak pulse power dissipation of 1.5KA18HE3/51 is 1500W for a 10/1000µs waveform.

  4. What is the operating temperature range of 1.5KA18HE3/51?

    • The operating temperature range of 1.5KA18HE3/51 is -55°C to +175°C.

  5. Can 1.5KA18HE3/51 be used for surge protection in power supplies?

    • Yes, 1.5KA18HE3/51 is commonly used for surge protection in power supplies due to its high surge capability.

  6. Is 1.5KA18HE3/51 suitable for overvoltage protection in communication equipment?

    • Yes, 1.5KA18HE3/51 is suitable for overvoltage protection in communication equipment due to its fast response time and low clamping voltage.

  7. What is the typical capacitance of 1.5KA18HE3/51?

    • The typical capacitance of 1.5KA18HE3/51 is 50pF at 1MHz and 2V bias.

  8. Can 1.5KA18HE3/51 be used in automotive electronics for transient voltage suppression?

    • Yes, 1.5KA18HE3/51 is suitable for transient voltage suppression in automotive electronics due to its rugged construction and high reliability.

  9. What is the package type of 1.5KA18HE3/51?

    • 1.5KA18HE3/51 is available in a DO-201AD (DO-27) package.

  10. Is 1.5KA18HE3/51 compliant with RoHS requirements?

    • Yes, 1.5KA18HE3/51 is compliant with RoHS requirements, making it suitable for use in environmentally sensitive applications.

I hope these questions and answers are helpful for your technical solutions! If you have any more specific questions, feel free to ask.