Vishay Semiconductor Diodes Division
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1.5KE91HE3/73
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1.5KE91HE3/73 - Product Overview and Analysis

Introduction

The 1.5KE91HE3/73 is a high-performance transient voltage suppressor diode designed to protect sensitive electronics from voltage transients induced by lightning, inductive load switching, and electrostatic discharge. This entry provides an in-depth analysis of the product, including its category, use, characteristics, package, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: Transient Voltage Suppressor (TVS) Diode
  • Use: Protection against voltage transients induced by lightning, inductive load switching, and electrostatic discharge
  • Characteristics: High surge capability, fast response time, low clamping voltage
  • Package: DO-201AE (DO-27), Axial
  • Essence: Silicon TVS Diode
  • Packaging/Quantity: Tape & Reel, 500 units per reel

Specifications

  • Part Number: 1.5KE91HE3/73
  • Peak Pulse Power: 1500W
  • Breakdown Voltage: 82.4V to 91V
  • Operating Voltage: 77.4V
  • Maximum Reverse Standoff Voltage: 77.4V
  • Reverse Leakage Current: 1µA
  • Operating Temperature Range: -55°C to +175°C

Detailed Pin Configuration

The 1.5KE91HE3/73 TVS diode has a standard axial lead package with two leads. The anode lead is typically longer than the cathode lead for easy identification and proper orientation during installation.

Functional Features

  • Fast response time to clamp transient voltages
  • High surge capability to withstand large transient currents
  • Low clamping voltage to protect downstream components
  • Robust construction for reliability in harsh environments

Advantages and Disadvantages

Advantages

  • Effective protection against voltage transients
  • Fast response time ensures minimal impact on protected circuits
  • Wide operating temperature range for versatile applications
  • Compact and rugged design for easy integration into circuit layouts

Disadvantages

  • Limited to unidirectional transient voltage suppression
  • Requires proper heat dissipation in high-power applications

Working Principles

When a transient voltage surge occurs, the 1.5KE91HE3/73 TVS diode rapidly conducts current, diverting the excess energy away from the protected circuit. This action clamps the transient voltage to a safe level, preventing damage to sensitive electronic components.

Detailed Application Field Plans

The 1.5KE91HE3/73 is widely used in various applications, including: - Power supplies - Telecommunication equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

  • 1.5KE6.8A
  • 1.5KE10A
  • 1.5KE15A
  • 1.5KE20A
  • 1.5KE30A

In conclusion, the 1.5KE91HE3/73 TVS diode offers robust transient voltage protection with fast response times and high surge capabilities. Its compact design and wide operating temperature range make it suitable for diverse applications across different industries.

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技術ソリューションにおける 1.5KE91HE3/73 の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the 1.5KE91HE3/73 used for?

    • The 1.5KE91HE3/73 is a transient voltage suppressor diode designed to protect electronic circuits from voltage spikes and transients.

  2. What is the maximum peak pulse power of the 1.5KE91HE3/73?

    • The maximum peak pulse power of the 1.5KE91HE3/73 is 1500 watts.

  3. What is the breakdown voltage of the 1.5KE91HE3/73?

    • The breakdown voltage of the 1.5KE91HE3/73 is 91 volts.

  4. How does the 1.5KE91HE3/73 protect electronic circuits?

    • The 1.5KE91HE3/73 clamps the voltage across the circuit it is protecting, diverting excess current away from sensitive components.

  5. What are the typical applications of the 1.5KE91HE3/73?

    • The 1.5KE91HE3/73 is commonly used in power supplies, industrial equipment, and automotive electronics to protect against voltage surges.

  6. What is the response time of the 1.5KE91HE3/73?

    • The response time of the 1.5KE91HE3/73 is very fast, typically responding within nanoseconds to clamp the voltage spike.

  7. Can the 1.5KE91HE3/73 be used in high-frequency applications?

    • Yes, the 1.5KE91HE3/73 can be used in high-frequency applications due to its fast response time and low capacitance.

  8. What is the operating temperature range of the 1.5KE91HE3/73?

    • The 1.5KE91HE3/73 has an operating temperature range of -55°C to 175°C, making it suitable for a wide range of environments.

  9. Is the 1.5KE91HE3/73 RoHS compliant?

    • Yes, the 1.5KE91HE3/73 is RoHS compliant, meeting environmental standards for lead-free manufacturing.

  10. How should the 1.5KE91HE3/73 be mounted in a circuit?

    • The 1.5KE91HE3/73 should be mounted close to the input terminals of the circuit it is protecting, with short leads to minimize inductance.