Vishay Semiconductor Diodes Division
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SMF40A-M3-18
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SMF40A-M3-18

Product Overview

Category

The SMF40A-M3-18 belongs to the category of surface mount, unidirectional TVS (transient voltage suppressor) diodes.

Use

It is primarily used for protecting sensitive electronics from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events.

Characteristics

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

Package

The SMF40A-M3-18 is available in a small, surface-mount package.

Essence

The essence of this product lies in its ability to provide robust protection against transient voltage events, thereby safeguarding electronic circuits and components.

Packaging/Quantity

The SMF40A-M3-18 is typically packaged in reels or tape and reel, with quantities varying based on customer requirements.

Specifications

  • Peak Pulse Power: 400W
  • Breakdown Voltage: 43.6V
  • Maximum Clamping Voltage: 70.1V
  • Operating Temperature Range: -55°C to +150°C
  • Package Type: SOD-123FL

Detailed Pin Configuration

The SMF40A-M3-18 features a standard SOD-123FL package with two pins. Pin 1 is the anode, and pin 2 is the cathode.

Functional Features

  • Transient voltage suppression
  • Reverse standoff voltage
  • Low leakage current

Advantages and Disadvantages

Advantages

  • Fast response time protects sensitive electronics
  • High surge current capability
  • RoHS compliant, making it environmentally friendly

Disadvantages

  • Limited breakdown voltage compared to some higher-rated TVS diodes
  • May require additional circuitry for comprehensive overvoltage protection

Working Principles

The SMF40A-M3-18 operates by diverting excessive transient currents away from sensitive electronic components, thereby limiting the voltage across the protected device.

Detailed Application Field Plans

The SMF40A-M3-18 is commonly used in various applications, including: - Consumer electronics - Telecommunications equipment - Industrial control systems - Automotive electronics - Power supplies

Detailed and Complete Alternative Models

Some alternative models to the SMF40A-M3-18 include: - SMAJ5.0A - SMBJ36CA - SMCJ24A

In conclusion, the SMF40A-M3-18 is a crucial component in protecting electronic devices from transient voltage events, offering fast response times and high surge current capabilities. Its compact size and RoHS compliance make it suitable for a wide range of applications, although designers should consider its limitations in terms of breakdown voltage when selecting a TVS diode for specific requirements.

Énumérez 10 questions et réponses courantes liées à l'application de SMF40A-M3-18 dans les solutions techniques

  1. What is SMF40A-M3-18?

    • SMF40A-M3-18 is a surface mount, high-power transient voltage suppressor diode designed to protect sensitive electronics from voltage transients induced by lightning and other transient voltage events.

  2. What is the maximum peak pulse power dissipation of SMF40A-M3-18?

    • The maximum peak pulse power dissipation of SMF40A-M3-18 is 400 watts.

  3. What is the breakdown voltage of SMF40A-M3-18?

    • The breakdown voltage of SMF40A-M3-18 is 43.6 volts.

  4. What are the typical applications for SMF40A-M3-18?

    • SMF40A-M3-18 is commonly used in applications such as telecommunications equipment, industrial equipment, and automotive electronics to protect against voltage surges and transients.

  5. What is the operating temperature range of SMF40A-M3-18?

    • The operating temperature range of SMF40A-M3-18 is -55°C to +150°C.

  6. What is the package type of SMF40A-M3-18?

    • SMF40A-M3-18 is available in a surface mount DO-219AB (SMF) package.

  7. What is the clamping voltage of SMF40A-M3-18?

    • The clamping voltage of SMF40A-M3-18 is 77.4 volts at 10A.

  8. Is SMF40A-M3-18 RoHS compliant?

    • Yes, SMF40A-M3-18 is RoHS compliant, making it suitable for use in environmentally friendly electronic products.

  9. What are the key features of SMF40A-M3-18?

    • Some key features of SMF40A-M3-18 include low clamping voltage, fast response time, and high surge capability.

  10. Where can I find detailed specifications and application notes for SMF40A-M3-18?

    • Detailed specifications and application notes for SMF40A-M3-18 can be found in the product datasheet provided by the manufacturer or distributor.