Vishay Semiconductor Diodes Division
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SMBJ78A-M3/5B
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SMBJ78A-M3/5B

Product Overview

The SMBJ78A-M3/5B belongs to the category of transient voltage suppressor diodes (TVS diodes) and is commonly used for surge protection in electronic circuits. These diodes are characterized by their ability to rapidly respond to overvoltage events, diverting excess current away from sensitive components. The SMBJ78A-M3/5B is typically packaged in a surface mount format and is available in various quantities to suit different application needs.

Basic Information

  • Category: Transient Voltage Suppressor Diode
  • Use: Surge protection in electronic circuits
  • Characteristics: Rapid response to overvoltage events, diverting excess current
  • Package: Surface mount
  • Essence: Protection of sensitive electronic components
  • Packaging/Quantity: Available in reels or bulk quantities

Specifications

  • Part Number: SMBJ78A-M3/5B
  • Voltage - Reverse Standoff (Typ): 78V
  • Power (Watts): 600W
  • Polarity: Unidirectional
  • Operating Temperature: -55°C to 150°C
  • Mounting Type: Surface Mount
  • Package / Case: DO-214AA (SMB)

Detailed Pin Configuration

The SMBJ78A-M3/5B TVS diode features a standard surface mount package with two pins for connection to the circuit board. The pin configuration is as follows: - Pin 1: Anode - Pin 2: Cathode

Functional Features

  • Fast Response Time: The SMBJ78A-M3/5B offers a fast response time to transient overvoltage events, providing effective protection to downstream components.
  • Low Clamping Voltage: This diode maintains a low clamping voltage during surge events, minimizing the stress on connected devices.
  • High Power Dissipation: With a power rating of 600W, the SMBJ78A-M3/5B can handle high transient power levels without degradation.

Advantages and Disadvantages

Advantages

  • Effective surge protection for sensitive electronic components
  • Fast response time
  • Low clamping voltage
  • High power dissipation capability

Disadvantages

  • Unidirectional protection only
  • Requires proper circuit design for optimal performance

Working Principles

The SMBJ78A-M3/5B operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage exceeds the specified level. By diverting the surge current away from the protected circuit, it prevents damage to sensitive components.

Detailed Application Field Plans

The SMBJ78A-M3/5B is widely used in various applications requiring surge protection, including: - Telecommunication equipment - Industrial control systems - Automotive electronics - Power supplies - Consumer electronics

Detailed and Complete Alternative Models

For applications requiring similar surge protection capabilities, alternative models to the SMBJ78A-M3/5B include: - SMAJ78A - P6SMBJ78A - SMCJ78A - 1.5SMCJ78A

In conclusion, the SMBJ78A-M3/5B transient voltage suppressor diode offers efficient surge protection for a wide range of electronic applications, with its fast response time, low clamping voltage, and high power dissipation capabilities making it a reliable choice for safeguarding sensitive components against transient overvoltage events.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SMBJ78A-M3/5B v technických řešeních

  1. What is the SMBJ78A-M3/5B used for?

    • The SMBJ78A-M3/5B is a transient voltage suppressor diode designed to protect sensitive electronic components from voltage spikes and transients.

  2. What is the maximum working voltage of the SMBJ78A-M3/5B?

    • The SMBJ78A-M3/5B has a maximum working voltage of 78V.

  3. What is the peak pulse power handling capability of the SMBJ78A-M3/5B?

    • The SMBJ78A-M3/5B can handle peak pulse power of up to 600W.

  4. In what type of technical solutions is the SMBJ78A-M3/5B commonly used?

    • The SMBJ78A-M3/5B is commonly used in applications such as power supplies, telecommunications equipment, and automotive electronics to protect against voltage surges and transients.

  5. What are the key features of the SMBJ78A-M3/5B?

    • The SMBJ78A-M3/5B features low clamping voltage, fast response time, and high surge capability, making it ideal for protecting sensitive electronic circuits.

  6. How does the SMBJ78A-M3/5B provide protection against voltage spikes?

    • The SMBJ78A-M3/5B shunts excess current away from sensitive components when a voltage spike occurs, preventing damage to the circuit.

  7. Can the SMBJ78A-M3/5B be used in high-speed data line protection?

    • Yes, the SMBJ78A-M3/5B is suitable for protecting high-speed data lines such as USB, Ethernet, and HDMI interfaces.

  8. What is the operating temperature range of the SMBJ78A-M3/5B?

    • The SMBJ78A-M3/5B has an operating temperature range of -55°C to 150°C, making it suitable for a wide range of environments.

  9. Is the SMBJ78A-M3/5B RoHS compliant?

    • Yes, the SMBJ78A-M3/5B is compliant with the Restriction of Hazardous Substances (RoHS) directive.

  10. Are there any recommended layout considerations for using the SMBJ78A-M3/5B in a circuit?

    • It is recommended to minimize the length of the traces between the SMBJ78A-M3/5B and the protected components and to ensure a low-inductance path for the best performance.