Vishay Semiconductor Diodes Division
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SMA5J18-E3/5A
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SMA5J18-E3/5A

Product Overview

Category

The SMA5J18-E3/5A belongs to the category of TVS (Transient Voltage Suppressor) diodes.

Use

It is used for surge protection in electronic circuits, particularly in applications where transient voltage spikes need to be suppressed to protect sensitive components.

Characteristics

  • Package: SMA (DO-214AC)
  • Essence: Low-profile, surface-mount design
  • Packaging/Quantity: Available in tape and reel packaging, with quantities varying based on supplier

Specifications

  • Peak Pulse Power: 5000W
  • Standoff Voltage: 18V
  • Breakdown Voltage: 20V
  • Clamping Voltage: 29.2V
  • Maximum Reverse Leakage Current: 1µA
  • Operating Temperature Range: -55°C to +150°C

Detailed Pin Configuration

The SMA5J18-E3/5A has a standard SMA package with two pins for surface-mount installation. The pin configuration follows industry-standard specifications for SMA diodes.

Functional Features

  • Transient Voltage Suppression: Effectively clamps transient voltage spikes to protect downstream components.
  • Fast Response Time: Rapid response to transient events ensures minimal impact on the protected circuit.

Advantages and Disadvantages

Advantages

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

Disadvantages

  • Sensitive to reverse overvoltage conditions
  • Limited to low-voltage applications

Working Principles

The SMA5J18-E3/5A operates by diverting excess transient voltage away from sensitive components, thereby limiting the voltage across the protected circuit.

Detailed Application Field Plans

The SMA5J18-E3/5A is commonly used in the following applications: - Consumer electronics - Telecommunications equipment - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

  • SMA5J15A-E3/61T: Similar specifications with a lower standoff voltage of 15V
  • SMA5J24A-E3/61T: Higher standoff voltage of 24V for increased protection

In conclusion, the SMA5J18-E3/5A is a versatile TVS diode that provides effective surge protection for a wide range of electronic applications, with its compact form factor and high surge capability making it an ideal choice for modern circuit protection needs.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van SMA5J18-E3/5A in technische oplossingen

  1. What is the maximum reverse voltage of SMA5J18-E3/5A?

    • The maximum reverse voltage of SMA5J18-E3/5A is 18V.

  2. What is the peak pulse power dissipation of SMA5J18-E3/5A?

    • The peak pulse power dissipation of SMA5J18-E3/5A is 500W.

  3. What is the typical junction capacitance of SMA5J18-E3/5A?

    • The typical junction capacitance of SMA5J18-E3/5A is 150pF.

  4. What is the forward voltage drop of SMA5J18-E3/5A at 5A?

    • The forward voltage drop of SMA5J18-E3/5A at 5A is 0.58V.

  5. What is the operating temperature range of SMA5J18-E3/5A?

    • The operating temperature range of SMA5J18-E3/5A is -55°C to +150°C.

  6. Is SMA5J18-E3/5A suitable for overvoltage protection in electronic circuits?

    • Yes, SMA5J18-E3/5A is commonly used for overvoltage protection in electronic circuits.

  7. Can SMA5J18-E3/5A be used in automotive applications?

    • Yes, SMA5J18-E3/5A is suitable for use in automotive applications.

  8. What are the typical applications of SMA5J18-E3/5A?

    • Typical applications of SMA5J18-E3/5A include transient voltage suppression in consumer electronics, industrial equipment, and telecommunications systems.

  9. Does SMA5J18-E3/5A have a low leakage current?

    • Yes, SMA5J18-E3/5A has a low leakage current, making it suitable for sensitive electronic devices.

  10. What are the packaging options available for SMA5J18-E3/5A?

    • SMA5J18-E3/5A is available in a variety of packaging options, including DO-214AC (SMA) and DO-15.