Vishay Semiconductor Diodes Division
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SMC3K40CAHM3/9A
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SMC3K40CAHM3/9A

Introduction

The SMC3K40CAHM3/9A is a high-power 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 power handling capability, fast response time
  • Package: SMA (DO-214AC)
  • Essence: Transient voltage suppression
  • Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Peak Power Dissipation: 3000W
  • Breakdown Voltage: 40V
  • Operating Voltage: 33.3V
  • Reverse Standoff Voltage: 28.8V
  • Clamping Voltage: 58.1V
  • Peak Pulse Current: 144A
  • Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The SMC3K40CAHM3/9A TVS diode has a standard SMA (DO-214AC) package with two pins for connection. The pinout configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

  • Fast response time to transient voltage events
  • High surge current capability
  • Low clamping voltage
  • RoHS compliant

Advantages and Disadvantages

Advantages

  • High power dissipation capability
  • Fast response to transient events
  • Compact SMA package
  • RoHS compliant

Disadvantages

  • Relatively low breakdown voltage compared to some higher voltage TVS diodes
  • Limited to specific applications requiring 40V protection

Working Principles

The SMC3K40CAHM3/9A operates based on the principle of avalanche breakdown. When a transient voltage event occurs, the TVS diode rapidly conducts, diverting excess current away from the protected circuit, and clamping the voltage to a safe level.

Detailed Application Field Plans

The SMC3K40CAHM3/9A is suitable for a wide range of applications, including: - Power supplies - Industrial equipment - Automotive electronics - Telecommunications equipment - LED lighting systems - Consumer electronics

Detailed and Complete Alternative Models

Some alternative TVS diode models that can be considered as alternatives to the SMC3K40CAHM3/9A include: - SMAJ40A - P6SMB36CA - 1.5SMC33CA

In summary, the SMC3K40CAHM3/9A TVS diode offers robust transient voltage protection in a compact package, making it suitable for various applications where high power dissipation and fast response time are essential.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SMC3K40CAHM3/9A v technických řešeních

  1. What is the SMC3K40CAHM3/9A used for?

    • The SMC3K40CAHM3/9A is a high-power transient voltage suppressor diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events.

  2. What is the maximum clamping voltage of the SMC3K40CAHM3/9A?

    • The maximum clamping voltage of the SMC3K40CAHM3/9A is 64.5V at 10A.

  3. What is the peak pulse current capability of the SMC3K40CAHM3/9A?

    • The SMC3K40CAHM3/9A has a peak pulse current capability of 300A.

  4. What are the typical applications of the SMC3K40CAHM3/9A?

    • Typical applications include protection of telecommunications equipment, power supplies, industrial controls, and other sensitive electronic devices from voltage surges and spikes.

  5. What is the operating temperature range of the SMC3K40CAHM3/9A?

    • The SMC3K40CAHM3/9A has an operating temperature range of -55°C to +175°C.

  6. What is the packaging type of the SMC3K40CAHM3/9A?

    • The SMC3K40CAHM3/9A is available in a DO-214AB (SMC) package.

  7. Is the SMC3K40CAHM3/9A RoHS compliant?

    • Yes, the SMC3K40CAHM3/9A is RoHS compliant.

  8. What are the key features of the SMC3K40CAHM3/9A?

    • Key features include low clamping voltage, fast response time, high surge capability, and RoHS compliance.

  9. What are the recommended mounting techniques for the SMC3K40CAHM3/9A?

    • The SMC3K40CAHM3/9A can be mounted using surface mount techniques such as reflow soldering or wave soldering.

  10. What are the industry standards and certifications met by the SMC3K40CAHM3/9A?

    • The SMC3K40CAHM3/9A meets industry standards such as IEC 61000-4-5, and it is also UL recognized.