Microsemi Corporation
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1N4742E3/TR13
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1N4742E3/TR13

Product Overview

Category

The 1N4742E3/TR13 belongs to the category of Zener diodes.

Use

It is commonly used for voltage regulation and voltage reference applications.

Characteristics

  • Zener voltage: 12V
  • Power dissipation: 1.0W
  • Package type: DO-41
  • Operating temperature range: -65°C to +200°C
  • Packaging/quantity: Tape & Reel (TR) with 3000 units per reel

Specifications

The 1N4742E3/TR13 Zener diode has the following specifications: - Zener voltage: 12V - Tolerance: ±5% - Maximum reverse current: 5μA - Maximum impedance: 20Ω - Maximum temperature coefficient: 0.05%/°C

Detailed Pin Configuration

The 1N4742E3/TR13 Zener diode has a standard DO-41 package with two leads. The anode is connected to the positive terminal, and the cathode is connected to the negative terminal.

Functional Features

  • Voltage regulation: Maintains a constant output voltage across a load.
  • Voltage reference: Provides a stable reference voltage for circuitry.

Advantages and Disadvantages

Advantages

  • Precise voltage regulation
  • Compact size
  • Wide operating temperature range

Disadvantages

  • Limited power dissipation capability
  • Voltage tolerance may not be suitable for some precision applications

Working Principles

The 1N4742E3/TR13 Zener diode operates based on the principle of the Zener breakdown effect. When the voltage across the diode reaches its Zener voltage, it begins to conduct in the reverse direction, maintaining a nearly constant voltage drop across its terminals.

Detailed Application Field Plans

The 1N4742E3/TR13 Zener diode finds application in various fields, including: - Voltage regulation in power supplies - Overvoltage protection in electronic circuits - Voltage reference in instrumentation

Detailed and Complete Alternative Models

Some alternative models to the 1N4742E3/TR13 Zener diode include: - 1N4732A: 4.7V Zener voltage - 1N4761A: 27V Zener voltage - BZX55C12: 12V Zener voltage

In conclusion, the 1N4742E3/TR13 Zener diode is a versatile component widely used for voltage regulation and reference applications due to its precise characteristics and compact design.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 1N4742E3/TR13 v technických řešeních

  1. What is the 1N4742E3/TR13 diode used for?

    • The 1N4742E3/TR13 is a Zener diode commonly used for voltage regulation and protection in electronic circuits.

  2. What is the voltage rating of the 1N4742E3/TR13 diode?

    • The 1N4742E3/TR13 has a nominal voltage of 12V, making it suitable for applications requiring a stable 12V reference voltage.

  3. How does the 1N4742E3/TR13 diode regulate voltage?

    • The 1N4742E3/TR13 operates in the reverse-biased breakdown region, maintaining a constant voltage drop across its terminals, effectively regulating the output voltage.

  4. Can the 1N4742E3/TR13 be used for overvoltage protection?

    • Yes, the 1N4742E3/TR13 can be employed to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.

  5. What are typical applications of the 1N4742E3/TR13 diode?

    • Common applications include voltage regulators, voltage references, power supplies, and precision analog circuits.

  6. What is the maximum power dissipation of the 1N4742E3/TR13 diode?

    • The 1N4742E3/TR13 has a maximum power dissipation of 1W, allowing it to handle moderate power levels in circuit designs.

  7. Does the 1N4742E3/TR13 have polarity?

    • Yes, the 1N4742E3/TR13 is a polarized device and must be connected with the correct orientation to function properly.

  8. What is the temperature coefficient of the 1N4742E3/TR13 diode?

    • The temperature coefficient is typically around -2mV/°C, indicating a relatively stable voltage reference over a range of temperatures.

  9. Can multiple 1N4742E3/TR13 diodes be connected in series or parallel?

    • Yes, multiple diodes can be connected in series to create higher voltage references or in parallel to increase current-handling capability.

  10. Are there any special considerations for using the 1N4742E3/TR13 in high-frequency circuits?

    • It's important to consider the diode's capacitance and dynamic impedance at high frequencies to ensure proper performance in such applications.