Vishay Semiconductor Diodes Division
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SMAJ28HE3/5A
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SMAJ28HE3/5A

Product Overview

Category

The SMAJ28HE3/5A belongs to the category of electronic components, specifically within the realm of semiconductor devices.

Use

This product is primarily used for transient voltage suppression in electronic circuits to protect sensitive components from voltage spikes and transients.

Characteristics

  • Voltage Suppression: Capable of suppressing voltage spikes and transients.
  • Compact Size: Small form factor for easy integration into circuit designs.
  • High Reliability: Designed for consistent performance and reliability.
  • Fast Response Time: Rapid response to voltage transients for effective protection.

Package

The SMAJ28HE3/5A is typically available in a surface mount package, which facilitates easy installation onto printed circuit boards (PCBs).

Essence

The essence of this product lies in its ability to safeguard electronic circuits and components from voltage surges, ensuring the integrity and longevity of the overall system.

Packaging/Quantity

The product is commonly packaged in reels or trays, with quantities varying based on the supplier and customer requirements.

Specifications

  • Part Number: SMAJ28HE3/5A
  • Voltage Rating: 28V
  • Peak Pulse Power Dissipation: 400W
  • Breakdown Voltage: 31.1V
  • Operating Temperature Range: -55°C to 150°C
  • Package Type: DO-214AC (SMA)

Detailed Pin Configuration

The SMAJ28HE3/5A features a standard DO-214AC (SMA) package with two pins. Pin 1 is the cathode, while pin 2 serves as the anode.

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient voltages to protect downstream components.
  • Fast Response: Rapid response time ensures minimal impact on the protected circuitry.
  • Low Clamping Voltage: Provides efficient protection without compromising the normal operation of the circuit.

Advantages and Disadvantages

Advantages

  • Effective transient voltage suppression
  • Compact size for space-constrained applications
  • High reliability and consistent performance

Disadvantages

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

Working Principles

The SMAJ28HE3/5A operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage exceeds the breakdown voltage, thereby diverting the transient energy away from the protected circuit.

Detailed Application Field Plans

The SMAJ28HE3/5A finds extensive use in various electronic systems, including: - Power supply units - Communication equipment - Automotive electronics - Industrial control systems - Consumer electronics

Detailed and Complete Alternative Models

  • Alternative Model 1: SMBJ28CA

    • Voltage Rating: 28V
    • Package Type: DO-214AA (SMB)

  • Alternative Model 2: P6SMB28CA

    • Voltage Rating: 28V
    • Package Type: DO-214AA (P6SMB)

In conclusion, the SMAJ28HE3/5A serves as a crucial component in protecting electronic circuits from voltage transients, offering reliable and efficient transient voltage suppression. Its compact size and high reliability make it a preferred choice for various applications across different industries.

Word Count: 511

Texniki həllərdə SMAJ28HE3/5A tətbiqi ilə bağlı 10 ümumi sual və cavabı sadalayın

  1. What is the maximum voltage rating of SMAJ28HE3/5A?

    • The maximum voltage rating of SMAJ28HE3/5A is 28V.

  2. What is the peak pulse power dissipation of SMAJ28HE3/5A?

    • The peak pulse power dissipation of SMAJ28HE3/5A is 400W.

  3. What is the breakdown voltage of SMAJ28HE3/5A?

    • The breakdown voltage of SMAJ28HE3/5A is typically 31.1V.

  4. What is the clamping voltage of SMAJ28HE3/5A?

    • The clamping voltage of SMAJ28HE3/5A at peak pulse current is typically 45.4V.

  5. What are the typical applications for SMAJ28HE3/5A?

    • SMAJ28HE3/5A is commonly used in surge protection for sensitive electronics, such as in telecommunications equipment, industrial control systems, and automotive electronics.

  6. What is the response time of SMAJ28HE3/5A?

    • The response time of SMAJ28HE3/5A is very fast, typically responding within nanoseconds to clamp transient voltage spikes.

  7. Is SMAJ28HE3/5A suitable for overvoltage protection in power supply circuits?

    • Yes, SMAJ28HE3/5A is suitable for overvoltage protection in power supply circuits, providing effective clamping of transient voltage spikes.

  8. Can SMAJ28HE3/5A be used for ESD protection in data communication interfaces?

    • Yes, SMAJ28HE3/5A can be used for ESD protection in data communication interfaces, safeguarding against electrostatic discharge events.

  9. What is the operating temperature range of SMAJ28HE3/5A?

    • The operating temperature range of SMAJ28HE3/5A is typically -55°C to +150°C, making it suitable for a wide range of environments.

  10. Does SMAJ28HE3/5A require any external components for proper operation?

    • SMAJ28HE3/5A does not require any external components for basic operation, but appropriate circuit design and layout considerations should be taken into account for optimal performance.