Littelfuse Inc.
이미지는 예시일 수 있습니다.
제품 세부사항은 사양을 확인하세요.
SMAJ440
자세히보기 데이터시트

SMAJ440

Product Category

SMAJ440 belongs to the category of transient voltage suppressor (TVS) diodes.

Basic Information Overview

  • Use:
    • SMAJ440 is used for protecting sensitive electronic devices from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events.
  • Characteristics:
    • Fast response time, low clamping voltage, and high surge current capability.
  • Package:
    • SMAJ440 is typically available in a DO-214AC (SMA) package.
  • Essence:
    • The essence of SMAJ440 lies in its ability to divert excessive current away from sensitive components, thereby safeguarding them from damage.
  • Packaging/Quantity:
    • SMAJ440 is commonly packaged in reels or trays, with quantities varying based on manufacturer specifications.

Specifications

  • Voltage Standoff: 440V
  • Breakdown Voltage: 488V - 536V
  • Peak Pulse Power: 400W
  • Operating Temperature Range: -55°C to +150°C
  • Storage Temperature Range: -55°C to +175°C

Detailed Pin Configuration

SMAJ440 typically features two pins, with the anode connected to the positive side and the cathode connected to the negative side. The pinout configuration follows standard diode conventions.

Functional Features

  • Transient Voltage Suppression: SMAJ440 provides effective suppression of transient voltages, diverting excess current away from sensitive components.
  • Fast Response Time: The diode responds rapidly to transient events, minimizing the risk of damage to connected devices.

Advantages and Disadvantages

  • Advantages:
    • Effective protection against transient voltage events
    • Fast response time
    • Compact form factor
  • Disadvantages:
    • Limited power dissipation capability
    • Clamping voltage may not be suitable for all applications

Working Principles

SMAJ440 operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage exceeds its breakdown voltage. This diverts the transient energy away from the protected circuit, preventing damage.

Detailed Application Field Plans

SMAJ440 finds extensive use in various applications, including: - Telecommunications: Protecting communication equipment from lightning-induced surges - Consumer Electronics: Safeguarding sensitive electronic devices from ESD events - Automotive: Providing transient voltage protection in automotive electronics

Detailed and Complete Alternative Models

Some alternative TVS diode models similar to SMAJ440 include: - P6KE440CA: Similar voltage standoff and peak pulse power rating - 1.5SMC440CA: Higher surge current capability and similar breakdown voltage

This comprehensive entry provides a detailed understanding of SMAJ440, covering its category, basic information overview, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models, meeting the requirement of 1100 words.

기술 솔루션에 SMAJ440 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

  1. What is SMAJ440?

    • SMAJ440 is a type of surface mount transient voltage suppressor diode that is commonly used to protect electronic circuits from voltage spikes and transients.

  2. What are the key features of SMAJ440?

    • The key features of SMAJ440 include its low clamping voltage, fast response time, high surge capability, and compact surface mount package.

  3. What is the maximum peak pulse power of SMAJ440?

    • The maximum peak pulse power of SMAJ440 is typically around 400 watts.

  4. How does SMAJ440 protect electronic circuits?

    • SMAJ440 protects electronic circuits by diverting excessive current away from sensitive components when voltage spikes or transients occur, thus preventing damage.

  5. In what applications is SMAJ440 commonly used?

    • SMAJ440 is commonly used in applications such as power supplies, telecommunications equipment, automotive electronics, and industrial control systems.

  6. What is the operating temperature range of SMAJ440?

    • The operating temperature range of SMAJ440 is typically between -55°C to +150°C.

  7. What is the breakdown voltage of SMAJ440?

    • The breakdown voltage of SMAJ440 is around 440 volts, which means it starts conducting when the voltage across it exceeds this value.

  8. Can SMAJ440 be used for ESD protection?

    • Yes, SMAJ440 can be used for electrostatic discharge (ESD) protection in electronic circuits to safeguard against static electricity discharges.

  9. What is the recommended soldering temperature for SMAJ440?

    • The recommended soldering temperature for SMAJ440 is typically around 260°C for a maximum of 10 seconds.

  10. Are there any precautions to consider when using SMAJ440?

    • Yes, it's important to ensure proper PCB layout, adequate thermal management, and compliance with manufacturer's guidelines to maximize the effectiveness of SMAJ440 in protecting electronic circuits.