Microsemi Corporation
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1N4738CP/TR12
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1N4738CP/TR12

Product Overview

Category

The 1N4738CP/TR12 belongs to the category of semiconductor devices, specifically within the family of Zener diodes.

Use

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

Characteristics

  • Zener voltage: 8.2V
  • Power dissipation: 1.3W
  • Package type: DO-41
  • Operating temperature range: -65°C to +200°C
  • Forward voltage: 1.1V
  • Reverse current: 5µA

Package

The 1N4738CP/TR12 is typically available in a DO-41 package, which is a cylindrical axial-lead package.

Packaging/Quantity

It is commonly supplied in reels or bulk packaging, with quantities varying based on manufacturer and distributor specifications.

Specifications

  • Zener voltage: 8.2V ±5%
  • Power dissipation: 1.3W
  • Maximum forward voltage: 1.1V
  • Maximum reverse current: 5µA
  • Operating temperature range: -65°C to +200°C
  • Package type: DO-41

Detailed Pin Configuration

The 1N4738CP/TR12 Zener diode has two pins, with the cathode being shorter than the anode. The pinout configuration is as follows: - Pin 1 (Anode) - Pin 2 (Cathode)

Functional Features

The primary function of the 1N4738CP/TR12 Zener diode is to maintain a constant voltage across its terminals when it is operated in the reverse breakdown region.

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • High power dissipation capability
  • Compact size

Disadvantages

  • Limited voltage options compared to programmable voltage regulators
  • Susceptible to damage from excessive current or power dissipation

Working Principles

When the 1N4738CP/TR12 Zener diode is reverse-biased and the voltage across its terminals exceeds the specified Zener voltage, it enters the breakdown region, allowing current to flow while maintaining a nearly constant voltage.

Detailed Application Field Plans

The 1N4738CP/TR12 Zener diode finds applications in various electronic circuits, including: - Voltage regulation in power supplies - Overvoltage protection - Signal clamping and limiting

Detailed and Complete Alternative Models

Some alternative models to the 1N4738CP/TR12 Zener diode include: - 1N4739CP/TR12 (Zener voltage: 9.1V) - 1N4740CP/TR12 (Zener voltage: 10V) - BZX55C8V2 (Zener voltage: 8.2V)

In conclusion, the 1N4738CP/TR12 Zener diode is a crucial component in electronic circuits, providing precise voltage regulation and finding applications in various fields due to its reliable performance and compact design.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1N4738CP/TR12 en soluciones técnicas

  1. What is the 1N4738CP/TR12?

    • The 1N4738CP/TR12 is a Zener diode with a voltage rating of 8.2V and a power rating of 1W.

  2. What are the typical applications of the 1N4738CP/TR12?

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

  3. What is the maximum current that can flow through the 1N4738CP/TR12?

    • The maximum current for the 1N4738CP/TR12 is typically around 200mA.

  4. How does the 1N4738CP/TR12 provide voltage regulation?

    • The Zener diode conducts current in reverse-bias when the voltage across it reaches its breakdown voltage, effectively regulating the voltage across the circuit.

  5. Can the 1N4738CP/TR12 be used for overvoltage protection?

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

  6. What are the key specifications to consider when using the 1N4738CP/TR12 in a circuit?

    • Key specifications include the breakdown voltage (8.2V), power rating (1W), and maximum current.

  7. Are there any temperature considerations when using the 1N4738CP/TR12?

    • Yes, the temperature coefficient of the Zener voltage should be taken into account to ensure stable performance across temperature variations.

  8. Can multiple 1N4738CP/TR12 diodes be connected in series or parallel?

    • Yes, they can be connected in series to increase the breakdown voltage or in parallel to share the current load.

  9. What are the potential failure modes of the 1N4738CP/TR12?

    • Common failure modes include thermal runaway at high currents, exceeding the power rating, and voltage spikes causing breakdown.

  10. Are there any alternatives to the 1N4738CP/TR12 for similar applications?

    • Yes, other Zener diodes with different breakdown voltages and power ratings can be considered based on specific application requirements.