Taiwan Semiconductor Corporation
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1SMA4739 R3G
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1SMA4739 R3G

Product Overview

The 1SMA4739 R3G belongs to the category of Zener diodes and is commonly used for voltage regulation and transient suppression in electronic circuits. This diode exhibits characteristics such as high reliability, low leakage current, and precise voltage regulation. It is typically packaged in a small, surface-mount package and is available in various quantities to suit different production needs.

Specifications

  • Voltage: 11V
  • Power Dissipation: 1.5W
  • Zener Voltage Tolerance: ±5%
  • Operating Temperature Range: -65°C to +175°C
  • Package Type: DO-214AC (SMA)

Detailed Pin Configuration

The 1SMA4739 R3G has two pins, with the anode connected to the positive terminal and the cathode connected to the negative terminal.

Functional Features

This Zener diode provides a stable voltage output when it is operated within its specified voltage range. It effectively regulates voltage spikes and transients, protecting sensitive components in the circuit.

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • High reliability
  • Low leakage current

Disadvantages

  • Limited power dissipation capability
  • Sensitive to overvoltage conditions

Working Principles

The 1SMA4739 R3G operates based on the principle of the Zener effect, where it maintains a constant voltage across its terminals by allowing current to flow in reverse bias once the voltage reaches its breakdown voltage.

Detailed Application Field Plans

This Zener diode is commonly used in voltage regulation circuits, surge protection applications, and as a reference voltage source in various electronic devices. It finds extensive use in power supplies, voltage regulators, and automotive electronics.

Detailed and Complete Alternative Models

Some alternative models to the 1SMA4739 R3G include: - 1N4749A - BZX85C11 - MMSZ5240B

In conclusion, the 1SMA4739 R3G Zener diode offers precise voltage regulation and transient suppression capabilities, making it a valuable component in various electronic circuits.

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10 domande e risposte comuni relative all'applicazione di 1SMA4739 R3G nelle soluzioni tecniche

  1. What is 1SMA4739 R3G?

    • 1SMA4739 R3G is a surface mount silicon zener diode designed for voltage regulation and transient protection in various electronic circuits.

  2. What is the maximum power dissipation of 1SMA4739 R3G?

    • The maximum power dissipation of 1SMA4739 R3G is 1.5 watts.

  3. What is the operating voltage range of 1SMA4739 R3G?

    • The operating voltage range of 1SMA4739 R3G is from 3.3V to 200V.

  4. What are the typical applications of 1SMA4739 R3G?

    • Typical applications of 1SMA4739 R3G include voltage clamping, surge suppression, and transient voltage protection in electronic circuits.

  5. What is the forward voltage drop of 1SMA4739 R3G?

    • The forward voltage drop of 1SMA4739 R3G is typically 1.5V at 200mA.

  6. What is the reverse standoff voltage of 1SMA4739 R3G?

    • The reverse standoff voltage of 1SMA4739 R3G is 43.6V.

  7. What is the temperature coefficient of 1SMA4739 R3G?

    • The temperature coefficient of 1SMA4739 R3G is 0.05% per °C.

  8. Is 1SMA4739 R3G RoHS compliant?

    • Yes, 1SMA4739 R3G is RoHS compliant, making it suitable for use in environmentally friendly electronic products.

  9. What is the package type of 1SMA4739 R3G?

    • 1SMA4739 R3G is available in a DO-214AC (SMA) package.

  10. What are the storage and operating temperature ranges for 1SMA4739 R3G?

    • The storage temperature range for 1SMA4739 R3G is -55°C to +150°C, while the operating temperature range is -55°C to +175°C.