Microsemi Corporation
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1N4742P/TR12
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1N4742P/TR12

Product Overview

Category

The 1N4742P/TR12 is a Zener diode, which falls under the category of semiconductor devices.

Use

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

Characteristics

  • Voltage regulation capability
  • Reverse breakdown voltage of 12V
  • Low impedance
  • Small package size

Package

The 1N4742P/TR12 is typically available in a DO-41 axial leaded package.

Essence

The essence of the 1N4742P/TR12 lies in its ability to maintain a constant voltage across its terminals when operated in the reverse breakdown region.

Packaging/Quantity

It is usually supplied in reels or tubes with varying quantities depending on the manufacturer.

Specifications

  • Reverse Breakdown Voltage: 12V
  • Power Dissipation: 1.0W
  • Operating Temperature Range: -65°C to +200°C
  • Forward Voltage: 1.2V at 200mA

Detailed Pin Configuration

The 1N4742P/TR12 has two pins, anode, and cathode, with the anode being the positive terminal and the cathode being the negative terminal.

Functional Features

  • Voltage regulation
  • Overvoltage protection
  • Stability in temperature variations

Advantages

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

Disadvantages

  • Limited power dissipation capability
  • Sensitivity to current surges

Working Principles

The 1N4742P/TR12 operates based on the principle of the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse biased.

Detailed Application Field Plans

The 1N4742P/TR12 finds applications in various electronic circuits such as: - Voltage regulators - Overvoltage protection circuits - Signal clamping circuits

Detailed and Complete Alternative Models

Some alternative models to the 1N4742P/TR12 include: - 1N4732A - BZX55C12 - 1N5242B

In conclusion, the 1N4742P/TR12 Zener diode is a crucial component in electronic circuits, providing precise voltage regulation and overvoltage protection. Its compact size and stable performance make it suitable for a wide range of applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 1N4742P/TR12 v technických řešeních

  1. What is the 1N4742P/TR12 diode used for?

    • The 1N4742P/TR12 is a Zener diode commonly used for voltage regulation and protection in electronic circuits.

  2. What is the voltage rating of the 1N4742P/TR12 diode?

    • The 1N4742P/TR12 has a nominal voltage of 12 volts, making it suitable for applications requiring a stable 12V reference voltage.

  3. How does the 1N4742P/TR12 diode regulate voltage?

    • The 1N4742P/TR12 operates in the reverse-biased breakdown region, maintaining a constant voltage drop across its terminals to regulate the output voltage.

  4. Can the 1N4742P/TR12 be used for overvoltage protection?

    • Yes, the 1N4742P/TR12 can be employed to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.

  5. What are the typical applications of the 1N4742P/TR12 diode?

    • Typical applications include voltage regulators, voltage references, overvoltage protection circuits, and power management systems.

  6. What is the maximum power dissipation of the 1N4742P/TR12 diode?

    • The 1N4742P/TR12 has a maximum power dissipation of 1.0 watt, allowing it to handle moderate power levels in circuit designs.

  7. Is the 1N4742P/TR12 suitable for automotive electronics?

    • Yes, the 1N4742P/TR12 can be used in automotive electronics for voltage regulation and transient protection in various systems.

  8. What is the temperature coefficient of the 1N4742P/TR12 diode?

    • The temperature coefficient is typically around -2.0 mV/°C, indicating a relatively stable voltage reference over a range of temperatures.

  9. Can multiple 1N4742P/TR12 diodes be connected in series or parallel?

    • Yes, multiple 1N4742P/TR12 diodes can be connected in series to create higher voltage references or in parallel to increase current-handling capability.

  10. Are there any specific layout considerations when using the 1N4742P/TR12 in a PCB design?

    • It's important to place decoupling capacitors near the 1N4742P/TR12 to minimize noise and ensure stable operation. Additionally, proper heat sinking may be required for high-power applications.