Taiwan Semiconductor Corporation
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1N4740A R1G
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1N4740A R1G

Product Overview

Category

The 1N4740A R1G belongs to the category of Zener diodes.

Use

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

Characteristics

  • Forward Voltage: 1.2V
  • Power Dissipation: 1W
  • Zener Voltage: 10V
  • Operating Temperature: -65°C to 200°C

Package

The 1N4740A R1G is typically available in a DO-41 package.

Essence

This Zener diode is essential for maintaining a constant voltage across a circuit, ensuring stable operation.

Packaging/Quantity

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

Specifications

  • Manufacturer: ON Semiconductor
  • Maximum Zener Impedance: 40Ω
  • Reverse Leakage Current: 5μA
  • Mounting Type: Through Hole
  • RoHS Compliant: Yes

Detailed Pin Configuration

The 1N4740A R1G has two pins, with the anode connected to the positive terminal and the cathode to the negative terminal.

Functional Features

  • Voltage Regulation: The Zener diode maintains a constant voltage across the circuit, preventing voltage spikes.
  • Overvoltage Protection: It protects sensitive components by diverting excess voltage away from them.

Advantages

  • Precise Voltage Regulation
  • Compact Size
  • Easy to Implement

Disadvantages

  • Limited Power Dissipation
  • Susceptible to Thermal Runaway if Not Properly Cooled

Working Principles

The 1N4740A R1G operates based on the principle of the Zener effect, where it allows current to flow in reverse when the voltage reaches its breakdown voltage, effectively regulating the voltage across the circuit.

Detailed Application Field Plans

Voltage Regulation

The 1N4740A R1G is widely used in power supplies, voltage regulators, and other electronic devices requiring stable voltage output.

Overvoltage Protection

It is employed in surge protectors, voltage clamping circuits, and automotive electronics to safeguard against voltage spikes.

Detailed and Complete Alternative Models

  • 1N4733A
  • 1N4734A
  • 1N4735A
  • 1N4736A

These alternative models offer similar voltage regulation capabilities and can be used as substitutes based on specific design requirements.

In conclusion, the 1N4740A R1G Zener diode plays a crucial role in maintaining stable voltage levels within electronic circuits, making it an indispensable component in various applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 1N4740A R1G v technických řešeních

  1. What is the 1N4740A R1G?

    • The 1N4740A R1G is a popular Zener diode with a voltage rating of 10V and a power rating of 1W.

  2. What are the typical applications of the 1N4740A R1G?

    • It is commonly used for voltage regulation, voltage reference, and overvoltage protection in various electronic circuits.

  3. What is the maximum current that can flow through the 1N4740A R1G?

    • The maximum current for reliable operation is around 100mA.

  4. How does the 1N4740A R1G provide voltage regulation?

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

  5. Can the 1N4740A R1G be used for voltage reference applications?

    • Yes, it can be used as a stable voltage reference due to its precise breakdown voltage characteristics.

  6. What are the key considerations when designing a circuit with the 1N4740A R1G?

    • It's important to consider the power dissipation, current limiting, and thermal management to ensure reliable performance.

  7. Is the 1N4740A R1G suitable for overvoltage protection?

    • Yes, it can be used to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.

  8. Are there any specific precautions to take when using the 1N4740A R1G in a circuit?

    • It's important to ensure proper heat sinking and avoid exceeding the maximum power dissipation to prevent damage to the diode.

  9. Can the 1N4740A R1G be used in low-power applications?

    • Yes, it is suitable for low-power circuits where precise voltage regulation or reference is required.

  10. Where can I find detailed specifications and application notes for the 1N4740A R1G?

    • Detailed specifications and application notes can be found in the datasheet provided by the manufacturer or on reputable electronics component websites.