Littelfuse Inc.
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SMBJ70
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SMBJ70 Product Overview

Introduction

The SMBJ70 belongs to the category of transient voltage suppressor (TVS) diodes, which are widely used for protecting sensitive electronics from voltage spikes and surges. These diodes exhibit characteristics such as high surge capability, low clamping voltage, and fast response time. The SMBJ70 is typically available in a package with a small footprint, making it suitable for various applications where space is limited.

Basic Information Overview

  • Category: Transient Voltage Suppressor (TVS) Diode
  • Use: Protection against voltage spikes and surges
  • Characteristics: High surge capability, low clamping voltage, fast response time
  • Package: SMB (DO-214AA)
  • Essence: Safeguarding sensitive electronics
  • Packaging/Quantity: Typically available in reels of 3000 units

Specifications

  • Voltage - Reverse Standoff (Typ): 70V
  • Voltage - Breakdown: 77.4V
  • Clamping Voltage: 113V
  • Peak Pulse Current: 10A
  • Capacitance: 150pF
  • Operating Temperature: -55°C to 150°C

Detailed Pin Configuration

The SMBJ70 TVS diode typically features two pins, with the anode connected to the positive side and the cathode connected to the negative side of the circuit.

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient overvoltage to a safe level
  • Fast Response Time: Rapid reaction to voltage spikes
  • High Surge Capability: Ability to withstand large surge currents

Advantages and Disadvantages

Advantages

  • Effective protection against voltage transients
  • Fast response time ensures minimal impact on the protected circuit
  • Small package size allows for space-efficient designs

Disadvantages

  • Limited to specific voltage ratings
  • May require additional components for comprehensive surge protection

Working Principles

The SMBJ70 TVS diode operates by diverting excess voltage away from sensitive components when a transient voltage spike occurs. It rapidly switches into a low impedance state, effectively clamping the voltage to a safe level and preventing damage to the connected circuitry.

Detailed Application Field Plans

The SMBJ70 TVS diode finds extensive use in various applications, including: - Power supply units - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the SMBJ70 TVS diode include: - SMAJ70A - SMCJ70A - P6SMBJ70A - 1.5SMCJ70A

In conclusion, the SMBJ70 TVS diode offers reliable protection against voltage transients and surges, making it a crucial component in safeguarding sensitive electronics across diverse industries.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de SMBJ70 en soluciones técnicas

  1. What is the SMBJ70?

    • The SMBJ70 is a type of surface mount transient voltage suppressor diode designed to protect electronic circuits from voltage spikes and transients.

  2. What is the maximum voltage rating of the SMBJ70?

    • The SMBJ70 has a maximum voltage rating of 70 volts, making it suitable for protecting circuits from voltage surges up to this level.

  3. What is the typical application of SMBJ70 in technical solutions?

    • The SMBJ70 is commonly used in applications such as power supplies, telecommunications equipment, automotive electronics, and industrial control systems to protect sensitive components from voltage transients.

  4. How does the SMBJ70 provide protection in technical solutions?

    • The SMBJ70 clamps the voltage level to a safe threshold, diverting excess current away from sensitive components and preventing damage due to voltage spikes.

  5. What are the key features of the SMBJ70 that make it suitable for technical solutions?

    • The SMBJ70 offers low clamping voltage, fast response time, and high surge capability, making it an effective solution for transient voltage protection in various technical applications.

  6. Can the SMBJ70 be used in combination with other protective components?

    • Yes, the SMBJ70 can be used in conjunction with other protective devices such as varistors, gas discharge tubes, or other transient voltage suppressors to provide comprehensive protection against voltage surges.

  7. What are the environmental considerations for using SMBJ70 in technical solutions?

    • The SMBJ70 is designed to meet environmental standards and is compatible with lead-free soldering processes, making it suitable for environmentally conscious applications.

  8. Are there any specific layout or mounting considerations for integrating SMBJ70 into technical designs?

    • It is important to follow recommended PCB layout guidelines and ensure proper thermal management to maximize the effectiveness of the SMBJ70 in providing transient voltage protection.

  9. What are the failure modes of SMBJ70 in technical solutions?

    • The SMBJ70 may fail due to prolonged exposure to overvoltage conditions or excessive current, so it is important to monitor its performance and replace it if necessary to maintain protection levels.

  10. Where can I find detailed specifications and application notes for SMBJ70 in technical solutions?

    • Detailed specifications, application notes, and design guidelines for the SMBJ70 can be found in the product datasheet provided by the manufacturer or on their official website.