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SMBJ85
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SMBJ85 - Product Overview

Introduction

The SMBJ85 belongs to the category of transient voltage suppressor (TVS) diodes, which are widely used for protecting sensitive electronics from voltage spikes and transients. This entry provides a comprehensive overview of the SMBJ85, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: Transient Voltage Suppressor (TVS) Diode
  • Use: Protecting sensitive electronic components from voltage spikes and transients
  • Characteristics: Fast response time, low clamping voltage, high surge capability
  • Package: SMB (DO-214AA)
  • Essence: Safeguarding electronic circuits from overvoltage events
  • Packaging/Quantity: Available in tape and reel packaging, quantity varies by manufacturer

Specifications

  • Voltage - Reverse Standoff (Typ): 85V
  • Voltage - Breakdown (Min): 94.4V
  • Voltage - Clamping (Max) @ Ipp: 137V
  • Current - Peak Pulse (10/1000µs): 17.2A
  • Power - Peak Pulse: 600W
  • Type: Unidirectional

Detailed Pin Configuration

The SMBJ85 typically has two pins, with the cathode marked by a line on the body of the diode.

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient overvoltages to a safe level
  • Fast Response Time: Rapid reaction to voltage spikes, minimizing potential damage to connected devices
  • Low Clamping Voltage: Provides efficient protection without compromising the protected circuit's normal operation

Advantages and Disadvantages

Advantages

  • Effective protection against voltage transients
  • Compact size for easy integration into circuit designs
  • Fast response time ensures minimal disruption to the protected system

Disadvantages

  • Limited to unidirectional protection
  • May require additional components for bidirectional protection in some applications

Working Principles

The SMBJ85 operates by diverting excess current away from sensitive components when a voltage spike occurs. When the voltage exceeds the diode's breakdown voltage, it begins conducting and clamps the voltage to a safe level, preventing damage to downstream electronics.

Detailed Application Field Plans

The SMBJ85 is commonly used in various applications, including: 1. Telecommunications: Protecting communication equipment from lightning-induced surges 2. Industrial Control Systems: Safeguarding control circuitry from power surges and transients 3. Automotive Electronics: Shielding vehicle electronics from voltage spikes and load dump events 4. Consumer Electronics: Protecting sensitive components in electronic devices from transient events

Detailed and Complete Alternative Models

  • SMBJ5.0A: 5.0V reverse standoff voltage
  • SMBJ15A: 15V reverse standoff voltage
  • SMBJ30CA: 30V reverse standoff voltage
  • SMBJ58A: 58V reverse standoff voltage

In conclusion, the SMBJ85 transient voltage suppressor diode offers effective protection against voltage transients, making it an essential component in various electronic systems.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van SMBJ85 in technische oplossingen

  1. What is the SMBJ85?

    • The SMBJ85 is a type of transient voltage suppressor diode designed to protect sensitive electronic components from voltage spikes and transients.

  2. What is the maximum voltage rating of the SMBJ85?

    • The SMBJ85 has a maximum voltage rating of 85 volts, making it suitable for protecting against transient overvoltage events within this range.

  3. What are the typical applications of the SMBJ85?

    • The SMBJ85 is commonly used in various technical solutions such as power supplies, telecommunications equipment, automotive electronics, and industrial control systems to protect against voltage surges and transients.

  4. How does the SMBJ85 provide protection?

    • The SMBJ85 operates by clamping the voltage during transient events, diverting excess current away from sensitive components and preventing damage.

  5. What is the response time of the SMBJ85?

    • The response time of the SMBJ85 is very fast, typically responding to transient events within nanoseconds to effectively protect the connected circuitry.

  6. Can the SMBJ85 be used in high-speed data lines?

    • Yes, the SMBJ85 is suitable for use in high-speed data lines, providing effective transient voltage suppression without degrading signal integrity.

  7. Is the SMBJ85 a bidirectional or unidirectional device?

    • The SMBJ85 is a bidirectional transient voltage suppressor, meaning it can protect against both positive and negative voltage transients.

  8. What is the peak pulse power handling capability of the SMBJ85?

    • The SMBJ85 has a high peak pulse power handling capability, allowing it to safely dissipate the energy from transient events without sustaining damage.

  9. Are there any temperature considerations when using the SMBJ85?

    • The SMBJ85 is designed to operate over a wide temperature range, making it suitable for various environmental conditions encountered in technical solutions.

  10. How should the SMBJ85 be mounted in a circuit?

    • The SMBJ85 should be mounted close to the protected circuitry, with short traces to minimize inductance and ensure rapid response to transient events.