Littelfuse Inc.
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SMAJ78C
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SMAJ78C

Product Overview

Category: Electronic Component
Use: Voltage Suppression
Characteristics: Transient Voltage Suppressor Diode
Package: DO-214AC (SMA)
Essence: Protects sensitive electronics from voltage spikes
Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Voltage - Reverse Standoff (Typ): 78V
  • Voltage - Breakdown (Min): 86.7V
  • Voltage - Clamping (Max) @ Ipp: 126V
  • Current - Peak Pulse (10/1000µs): 10A
  • Power - Peak Pulse: 400W
  • Type: Zener
  • Unidirectional: Yes

Detailed Pin Configuration

  1. Cathode
  2. Anode

Functional Features

  • Fast response time
  • Low clamping voltage
  • High surge capability
  • RoHS compliant

Advantages and Disadvantages

Advantages: - Provides reliable overvoltage protection - Fast reaction to transient voltage events - Compact size for easy integration into circuit designs

Disadvantages: - Limited power dissipation capability - May require additional components for comprehensive circuit protection

Working Principles

The SMAJ78C operates by diverting excess current away from sensitive electronic components when a transient voltage event occurs. It rapidly clamps the voltage to a safe level, protecting the downstream circuitry.

Detailed Application Field Plans

The SMAJ78C is commonly used in various electronic systems, including: - Power supplies - Communication equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

  1. P6SMB78CA: Similar specifications and package type
  2. 1.5SMC78CA: Higher power dissipation capability
  3. SMBJ78CA: Smaller package size for space-constrained applications

In conclusion, the SMAJ78C is a vital component in safeguarding electronic devices from voltage surges, offering fast response times and high surge capability. Its compact design makes it suitable for diverse applications, while alternative models provide flexibility in meeting specific requirements.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de SMAJ78C en soluciones técnicas

  1. What is SMAJ78C?

    • SMAJ78C is a surface mount transient voltage suppressor diode that is commonly used to protect electronic circuits from overvoltage transients.

  2. What is the maximum peak pulse power of SMAJ78C?

    • The maximum peak pulse power of SMAJ78C is 400 watts.

  3. What is the breakdown voltage of SMAJ78C?

    • The breakdown voltage of SMAJ78C is 78 volts.

  4. What are the typical applications of SMAJ78C?

    • SMAJ78C is typically used in various electronic devices and systems such as power supplies, telecommunications equipment, automotive electronics, and industrial controls to protect against voltage surges and spikes.

  5. What is the operating temperature range of SMAJ78C?

    • The operating temperature range of SMAJ78C is -55°C to +150°C.

  6. How does SMAJ78C provide protection against voltage transients?

    • SMAJ78C clamps the voltage to a safe level by diverting excess current away from sensitive components, thereby protecting them from damage.

  7. Is SMAJ78C RoHS compliant?

    • Yes, SMAJ78C is RoHS compliant, meaning it meets the Restriction of Hazardous Substances directive.

  8. What is the package type of SMAJ78C?

    • SMAJ78C is available in a DO-214AC (SMA) package.

  9. Can SMAJ78C be used for ESD protection?

    • Yes, SMAJ78C can also be used for electrostatic discharge (ESD) protection in addition to transient voltage suppression.

  10. Are there any recommended layout guidelines for using SMAJ78C in a circuit?

    • Yes, it is recommended to minimize the length and impedance of the traces connecting SMAJ78C to the protected circuit and to ensure proper grounding for effective protection.

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