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SMBJ18
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SMBJ18 Product Overview

Introduction

The SMBJ18 is a transient voltage suppressor diode designed to protect sensitive electronic components from voltage transients induced by lightning, inductive load switching, and electrostatic discharge. This entry provides a comprehensive overview of the SMBJ18, 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: Protection against voltage transients
  • Characteristics: Fast response time, low clamping voltage
  • Package: SOD-123
  • Essence: Silicon TVS Diode
  • Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Peak Pulse Power: 600 Watts
  • Breakdown Voltage Range: 15.3V to 16.8V
  • Operating Temperature Range: -55°C to +150°C
  • Storage Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The SMBJ18 features a SOD-123 package with two pins. Pin 1 is the anode, and pin 2 is the cathode.

Functional Features

  • Transient Voltage Suppression: Provides protection against voltage transients by diverting excess current away from sensitive components.
  • Fast Response Time: Reacts quickly to transient voltage spikes, minimizing the risk of damage to connected devices.
  • Low Clamping Voltage: Limits the voltage across the protected circuit during transient events, safeguarding downstream components.

Advantages and Disadvantages

Advantages

  • Effective protection against voltage transients
  • Fast response time
  • Compact SOD-123 package
  • Wide operating temperature range

Disadvantages

  • Limited peak pulse power compared to higher-rated TVS diodes
  • Breakdown voltage range may not cover all application scenarios

Working Principles

When a transient voltage spike occurs, the SMBJ18 conducts current and clamps the voltage to a safe level, protecting the connected circuitry. This is achieved through the rapid transition of the diode into its low impedance state when subjected to overvoltage conditions.

Detailed Application Field Plans

The SMBJ18 is commonly used in various applications, including: - Consumer electronics - Telecommunications equipment - Industrial automation systems - Automotive electronics - Power supplies

Detailed and Complete Alternative Models

  • SMBJ5.0A: 5.0V Breakdown Voltage, 600W Peak Pulse Power
  • SMBJ12CA: 12V Breakdown Voltage, 600W Peak Pulse Power
  • SMBJ24A: 24V Breakdown Voltage, 600W Peak Pulse Power
  • SMBJ48CA: 48V Breakdown Voltage, 600W Peak Pulse Power

In conclusion, the SMBJ18 transient voltage suppressor diode offers effective protection against voltage transients in a compact and reliable package, making it suitable for a wide range of applications.

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技術ソリューションにおける SMBJ18 の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the SMBJ18 used for in technical solutions?

    • The SMBJ18 is commonly used as a transient voltage suppressor to protect sensitive electronic components from voltage spikes and surges.

  2. What is the maximum voltage rating of the SMBJ18?

    • The SMBJ18 has a maximum voltage rating of 18 volts, making it suitable for protecting low-voltage electronic circuits.

  3. What is the peak pulse power handling capability of the SMBJ18?

    • The SMBJ18 can handle peak pulse power of up to 600 watts, providing robust protection against transient events.

  4. What are the typical applications of the SMBJ18 in technical solutions?

    • The SMBJ18 is commonly used in applications such as telecommunications equipment, industrial control systems, automotive electronics, and consumer electronics.

  5. Does the SMBJ18 have a fast response time?

    • Yes, the SMBJ18 has a fast response time, typically responding to transient events within nanoseconds to protect sensitive components.

  6. What is the operating temperature range of the SMBJ18?

    • The SMBJ18 has an operating temperature range of -55°C to 150°C, allowing it to function effectively in a wide range of environments.

  7. Is the SMBJ18 RoHS compliant?

    • Yes, the SMBJ18 is RoHS compliant, meeting environmental standards for lead-free manufacturing.

  8. Can the SMBJ18 be used for both unidirectional and bidirectional protection?

    • Yes, the SMBJ18 is available in both unidirectional and bidirectional configurations, offering flexibility for different circuit requirements.

  9. What is the packaging option for the SMBJ18?

    • The SMBJ18 is available in various package options, including DO-214AA (SMB) and DO-214AB (SMC), providing choices for different assembly processes.

  10. Are there any recommended layout considerations when using the SMBJ18 in a circuit?

    • It is recommended to minimize the length of traces between the SMBJ18 and the protected components, and to ensure proper grounding for optimal performance.

Feel free to ask if you need further information on any of these questions!