Littelfuse Inc.
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SMBJ400C
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SMBJ400C

Product Overview

The SMBJ400C 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 SMBJ400C is typically packaged in a compact, surface-mount design 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, compact surface-mount design
  • Package: SOD-123FL
  • Essence: Protection of sensitive electronic components from voltage surges
  • Packaging/Quantity: Available in tape and reel packaging, with varying quantities

Specifications

  • Voltage - Reverse Standoff (Typ): 342V
  • Voltage - Breakdown (Min): 380V
  • Voltage - Clamping (Max) @ Ipp: 552V
  • Current - Peak Pulse (10/1000µs): 10A
  • Power - Peak Pulse: 400W
  • Type: Zener

Detailed Pin Configuration

The SMBJ400C TVS diode features a standard SOD-123FL package with two pins. Pin 1 is the cathode, while pin 2 is the anode.

Functional Features

  • Rapid response to overvoltage events
  • Low clamping voltage
  • High surge current capability
  • Compact surface-mount design

Advantages and Disadvantages

Advantages

  • Effective surge protection for sensitive electronic components
  • Compact form factor for space-constrained applications
  • High surge current handling capability

Disadvantages

  • Limited power dissipation capacity compared to larger TVS diode packages
  • Higher clamping voltage compared to some alternative models

Working Principles

The SMBJ400C operates based on the principle of avalanche breakdown. When an overvoltage event occurs, the diode rapidly conducts excess current, diverting it away from the protected circuit. This action effectively limits the voltage across the circuit, safeguarding sensitive components.

Detailed Application Field Plans

The SMBJ400C is widely used in various electronic systems and equipment requiring surge protection. Some common application fields include: - Power supply units - Communication equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

Some alternative TVS diode models that can be considered as alternatives to the SMBJ400C include: - SMAJ400A - P6KE400A - 1.5KE440CA - SMCJ400A

In conclusion, the SMBJ400C transient voltage suppressor diode offers effective surge protection for electronic circuits, especially in applications where space is limited. While it has certain limitations, its rapid response and high surge current capability make it a valuable component in safeguarding sensitive electronics.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de SMBJ400C en soluciones técnicas

  1. What is the SMBJ400C?

    • The SMBJ400C 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 SMBJ400C?

    • The SMBJ400C has a maximum working voltage of 400 volts.

  3. What is the peak pulse power dissipation of the SMBJ400C?

    • The peak pulse power dissipation of the SMBJ400C is 600 watts.

  4. What are the typical applications of the SMBJ400C?

    • The SMBJ400C is commonly used in surge protection for telecommunications equipment, industrial control systems, and automotive electronics.

  5. What is the clamping voltage of the SMBJ400C?

    • The clamping voltage of the SMBJ400C is typically around 648 volts at a peak pulse current of 10A.

  6. What is the response time of the SMBJ400C?

    • The response time of the SMBJ400C is very fast, typically in the nanosecond range.

  7. Is the SMBJ400C RoHS compliant?

    • Yes, the SMBJ400C is RoHS compliant, making it suitable for use in environmentally conscious designs.

  8. Can the SMBJ400C be used for overvoltage protection in power supply circuits?

    • Yes, the SMBJ400C is suitable for providing overvoltage protection in power supply circuits to safeguard sensitive components.

  9. What is the operating temperature range of the SMBJ400C?

    • The SMBJ400C is designed to operate within a temperature range of -55°C to 150°C, making it suitable for a wide range of environments.

  10. Are there any recommended layout considerations when using the SMBJ400C?

    • It is recommended to minimize the length of the traces connecting the SMBJ400C to the protected circuit and to ensure a low-inductance path to ground for optimal performance.