Taiwan Semiconductor Corporation
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1SMA4738HR3G
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1SMA4738HR3G

Product Overview

Category

The 1SMA4738HR3G belongs to the category of semiconductor devices, specifically a Zener diode.

Use

It is commonly used for voltage regulation and transient suppression in electronic circuits.

Characteristics

  • Voltage Regulation: Provides stable voltage output under varying load conditions.
  • Transient Suppression: Protects sensitive components from voltage spikes.
  • High Reliability: Designed for consistent performance over a wide range of operating conditions.

Package

The 1SMA4738HR3G is typically available in a surface-mount package, making it suitable for compact electronic designs.

Essence

The essence of this product lies in its ability to maintain a constant voltage across a circuit, ensuring the protection of sensitive components from voltage fluctuations.

Packaging/Quantity

It is usually supplied in reels or tubes, with quantities varying based on manufacturer specifications.

Specifications

  • Voltage: 11V
  • Power Dissipation: 1.5W
  • Zener Voltage Tolerance: ±5%
  • Operating Temperature Range: -65°C to +175°C
  • Package Type: SMA

Detailed Pin Configuration

The 1SMA4738HR3G typically features two pins, with the anode and cathode connections clearly labeled for easy integration into circuit designs.

Functional Features

  • Voltage Regulation: Maintains a constant voltage across the diode.
  • Transient Suppression: Quickly clamps voltage spikes to protect downstream components.
  • Fast Response Time: Rapid reaction to voltage changes ensures effective transient suppression.

Advantages

  • Stable Voltage Output: Ensures consistent performance of connected circuits.
  • Compact Design: Surface-mount package enables space-efficient PCB layouts.
  • Reliable Protection: Effectively safeguards against voltage transients.

Disadvantages

  • Limited Power Dissipation: May not be suitable for high-power applications.
  • Temperature Sensitivity: Performance may vary significantly at extreme temperatures.

Working Principles

The 1SMA4738HR3G operates based on the Zener effect, where it maintains a constant voltage drop across its terminals by allowing controlled breakdown under reverse bias conditions.

Detailed Application Field Plans

This Zener diode finds extensive use in various electronic applications, including: - Voltage Regulation: Stabilizing power supply voltages in electronic systems. - Transient Suppression: Protecting sensitive components from voltage spikes in communication equipment. - Voltage Reference: Providing a stable reference voltage for analog circuits.

Detailed and Complete Alternative Models

  • 1N4738A: A through-hole Zener diode with similar voltage and power dissipation ratings.
  • BZX85C11: Another surface-mount Zener diode offering comparable voltage regulation characteristics.

In conclusion, the 1SMA4738HR3G Zener diode offers reliable voltage regulation and transient suppression capabilities in a compact surface-mount package, making it well-suited for a wide range of electronic applications.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1SMA4738HR3G en soluciones técnicas

  1. What is 1SMA4738HR3G and what is its application?

    • 1SMA4738HR3G is a Zener diode with a voltage of 11V and a power rating of 1.5W. It is commonly used for voltage regulation and transient protection in electronic circuits.

  2. How does 1SMA4738HR3G provide voltage regulation?

    • The 1SMA4738HR3G Zener diode conducts current in the reverse-biased direction when the voltage across it exceeds its breakdown voltage, effectively regulating the voltage at its rated value.

  3. In what type of technical solutions is 1SMA4738HR3G typically used?

    • 1SMA4738HR3G is commonly employed in power supplies, voltage regulators, surge protectors, and other electronic systems requiring voltage clamping and transient suppression.

  4. What are the key specifications and characteristics of 1SMA4738HR3G?

    • The 1SMA4738HR3G has a Zener voltage of 11V, a power dissipation of 1.5W, low leakage current, and fast response time to transient events.

  5. How does 1SMA4738HR3G contribute to transient protection in circuits?

    • When subjected to voltage spikes or transients, the 1SMA4738HR3G Zener diode quickly conducts excess current, diverting it away from sensitive components and protecting them from damage.

  6. Can 1SMA4738HR3G be used in automotive applications?

    • Yes, 1SMA4738HR3G is suitable for automotive electronics, where it can protect sensitive components from voltage surges and transients commonly encountered in vehicle electrical systems.

  7. What are the temperature considerations for 1SMA4738HR3G in technical designs?

    • 1SMA4738HR3G operates within a specified temperature range, typically from -55°C to 150°C, making it suitable for a wide range of environmental conditions.

  8. Does 1SMA4738HR3G require any additional components for proper operation?

    • In most cases, 1SMA4738HR3G may require a series resistor to limit the current flowing through it and ensure proper voltage regulation.

  9. Are there any alternative components that can be used in place of 1SMA4738HR3G?

    • Depending on specific requirements, alternative Zener diodes with similar voltage ratings and power dissipation capabilities can be considered as substitutes for 1SMA4738HR3G.

  10. What are some best practices for incorporating 1SMA4738HR3G into a technical solution?

    • Proper PCB layout, thermal management, and consideration of voltage and power ratings are essential for effective integration of 1SMA4738HR3G into electronic designs.