ON Semiconductor
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SMF78AT1G
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SMF78AT1G

Product Overview

Category: Diode
Use: Voltage regulation and protection
Characteristics: Low forward voltage drop, high surge capability
Package: SOD-123FL
Essence: Schottky diode
Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Forward Voltage Drop: 0.35V at 1A
  • Reverse Standoff Voltage: 30V
  • Peak Pulse Current: 3.5A
  • Operating Temperature Range: -65°C to +150°C

Detailed Pin Configuration

The SMF78AT1G has two pins, with the anode connected to pin 1 and the cathode connected to pin 2.

Functional Features

  • Low forward voltage drop ensures minimal power loss
  • High surge capability provides robust protection against transient events

Advantages and Disadvantages

Advantages: - Low power dissipation - Fast switching speed - Compact package size

Disadvantages: - Limited reverse voltage capability - Sensitivity to temperature variations

Working Principles

The SMF78AT1G operates based on the Schottky barrier principle, where a metal-semiconductor junction is formed to allow for low forward voltage drop and fast switching characteristics.

Detailed Application Field Plans

This diode is commonly used in voltage regulation and transient voltage suppression circuits in various electronic devices such as mobile phones, tablets, and power supplies. It is also utilized in signal clamping and protection applications.

Detailed and Complete Alternative Models

  • 1N5819: Similar forward voltage drop and package type
  • SS34: Higher reverse voltage capability
  • BAT54S: Dual diode configuration for more complex circuit designs

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق SMF78AT1G في الحلول التقنية

  1. What is SMF78AT1G?

    • SMF78AT1G is a surface mount, 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 working voltage of SMF78AT1G?

    • The maximum working voltage of SMF78AT1G is 78V.

  3. What is the peak pulse current rating of SMF78AT1G?

    • The peak pulse current rating of SMF78AT1G is typically 5A.

  4. What are the typical applications of SMF78AT1G?

    • SMF78AT1G is commonly used in various electronic devices and systems such as telecommunication equipment, industrial control systems, automotive electronics, and consumer electronics for protection against voltage surges and transients.

  5. What is the clamping voltage of SMF78AT1G?

    • The clamping voltage of SMF78AT1G is typically around 106V at 5A.

  6. What is the operating temperature range of SMF78AT1G?

    • The operating temperature range of SMF78AT1G is -55°C to 150°C.

  7. How does SMF78AT1G provide protection against transient voltage events?

    • SMF78AT1G suppresses transient voltage events by diverting excessive current away from sensitive components and limiting the voltage across them.

  8. Is SMF78AT1G RoHS compliant?

    • Yes, SMF78AT1G is RoHS compliant, meaning it meets the Restriction of Hazardous Substances directive.

  9. What is the package type of SMF78AT1G?

    • SMF78AT1G is available in a SOD-123FL package.

  10. Can SMF78AT1G be used in high-speed data line protection applications?

    • Yes, SMF78AT1G can be used in high-speed data line protection applications due to its fast response time and low capacitance characteristics.