Vishay Semiconductor Diodes Division
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SM5S28ATHE3/I
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SM5S28ATHE3/I

Product Category

The SM5S28ATHE3/I belongs to the category of semiconductor devices, specifically a TVS (Transient Voltage Suppressor) diode.

Basic Information Overview

  • Use: The SM5S28ATHE3/I is used for protecting sensitive electronics from voltage transients induced by lightning, electrostatic discharge (ESD), and other transient voltage events.
  • Characteristics: It offers low clamping voltage, high surge capability, and fast response time.
  • Package: The device is available in a surface-mount DO-218AB package.
  • Essence: Its essence lies in providing robust overvoltage protection for electronic circuits.
  • Packaging/Quantity: Typically supplied in reels, the quantity per reel varies based on the manufacturer's specifications.

Specifications

  • Standoff Voltage: 28V
  • Breakdown Voltage: 31.1V minimum
  • Peak Pulse Power: 5000W
  • Operating Temperature Range: -55°C to 150°C
  • RoHS Compliant: Yes

Detailed Pin Configuration

The SM5S28ATHE3/I typically has two pins, with the pinout configuration as follows: 1. Anode (A) 2. Cathode (K)

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient voltages to protect downstream components.
  • Fast Response Time: Rapid reaction to transient events ensures minimal impact on the protected circuitry.
  • High Surge Capability: Capable of handling large surge currents without degradation.

Advantages and Disadvantages

Advantages

  • Effective protection against transient voltage events
  • Fast response time
  • RoHS compliant

Disadvantages

  • Limited to a specific voltage range
  • Requires careful consideration of placement and layout for optimal performance

Working Principles

The SM5S28ATHE3/I operates based on the principle of avalanche breakdown, where it rapidly conducts excess current when the voltage exceeds its breakdown voltage, thereby diverting the transient energy away from the protected circuit.

Detailed Application Field Plans

The SM5S28ATHE3/I finds application in various fields including: - Telecommunications equipment - Industrial control systems - Automotive electronics - Consumer electronics - Power supplies

Detailed and Complete Alternative Models

Some alternative models to the SM5S28ATHE3/I include: - SMAJ28A - P6SMB28A - 1.5SMC28CA

In conclusion, the SM5S28ATHE3/I serves as a crucial component in safeguarding electronic systems from transient voltage events, offering reliable protection and peace of mind for designers and users alike.

技術ソリューションにおける SM5S28ATHE3/I の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is the SM5S28ATHE3/I?

    • The SM5S28ATHE3/I is a TVS diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events.

  2. What are the key features of the SM5S28ATHE3/I?

    • The key features include a low clamping voltage, high surge capability, and a compact SMC package for easy integration into circuit designs.

  3. What applications is the SM5S28ATHE3/I suitable for?

    • It is commonly used in industrial and consumer electronics, telecommunications equipment, and automotive systems to safeguard against voltage surges.

  4. What is the maximum peak pulse current of the SM5S28ATHE3/I?

    • The maximum peak pulse current is typically 66.7A at 10/1000μs.

  5. How does the SM5S28ATHE3/I provide protection against voltage transients?

    • It rapidly clamps the transient voltage to a safe level, diverting excess current away from sensitive components.

  6. Is the SM5S28ATHE3/I RoHS compliant?

    • Yes, it is compliant with the Restriction of Hazardous Substances directive, making it suitable for use in environmentally conscious designs.

  7. What is the operating temperature range of the SM5S28ATHE3/I?

    • It can operate within a temperature range of -55°C to 150°C, ensuring reliability in various environmental conditions.

  8. Can the SM5S28ATHE3/I be used in high-speed data line protection?

    • Yes, it is suitable for protecting high-speed data lines such as USB, Ethernet, and HDMI interfaces.

  9. Does the SM5S28ATHE3/I require any external components for proper operation?

    • It does not require any external components and can be directly integrated into the circuit for effective transient voltage suppression.

  10. What are the recommended layout guidelines for incorporating the SM5S28ATHE3/I into a PCB design?

    • Proper layout techniques, including short trace lengths and adequate ground connections, should be followed to optimize the performance of the SM5S28ATHE3/I in a PCB design.