1N4742ATR

Product Overview

Use

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

Characteristics

Zener voltage: 12V
Power dissipation: 1W
Package type: DO-41
Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

Zener Voltage: 12V
Power Dissipation: 1W
Forward Voltage: 1.5V
Reverse Current: 5μA
Operating Temperature Range: -65°C to +200°C

Detailed Pin Configuration

The 1N4742ATR has two pins, with the anode connected to the positive terminal and the cathode connected to the negative terminal.

Functional Features

Precise voltage regulation
Low reverse leakage current
High power dissipation capability

Advantages

Reliable voltage regulation
Wide operating temperature range
Compact package size

Disadvantages

Limited power dissipation compared to higher wattage diodes
Sensitive to temperature variations

Working Principles

The 1N4742ATR operates based on the Zener effect, where it maintains a constant voltage across its terminals when reverse biased.

Detailed Application Field Plans

This diode is widely used in voltage regulator circuits, overvoltage protection, and as a reference voltage source in various electronic devices such as power supplies, amplifiers, and sensors.

Detailed and Complete Alternative Models

1N4733A: Zener voltage 5.1V, Power dissipation 1W
1N4744A: Zener voltage 15V, Power dissipation 1W
BZX55C12: Zener voltage 12V, Power dissipation 500mW

In conclusion, the 1N4742ATR Zener diode offers precise voltage regulation and finds extensive use in various electronic applications due to its reliable performance and compact design.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van 1N4742ATR in technische oplossingen

What is the 1N4742ATR?
- The 1N4742ATR is a Zener diode with a voltage rating of 12V and a power rating of 1W.
What are the typical applications of the 1N4742ATR?
- It is commonly used for voltage regulation, voltage reference, and overvoltage protection in various electronic circuits.
What is the maximum current that can flow through the 1N4742ATR?
- The maximum current for reliable operation is typically around 50-60 mA.
How does the 1N4742ATR provide voltage regulation?
- The Zener diode conducts in the reverse-biased direction when the voltage across it reaches its breakdown voltage, effectively regulating the voltage at that level.
Can the 1N4742ATR be used for overvoltage protection?
- Yes, it can be used to shunt excess voltage away from sensitive components in a circuit, protecting them from damage.
What are the key specifications to consider when using the 1N4742ATR in a design?
- Key specifications include the breakdown voltage, power dissipation, and maximum current, as well as the temperature coefficient and package type.
Are there any specific thermal considerations when using the 1N4742ATR?
- It is important to consider the thermal characteristics and ensure proper heat sinking if the diode is expected to dissipate significant power.
Can the 1N4742ATR be used in automotive applications?
- Yes, it can be used in automotive electronics for voltage regulation and protection against voltage transients.
What are some common alternatives to the 1N4742ATR?
- Alternatives include other Zener diodes with similar voltage and power ratings, such as the 1N4742A, BZX55C12, or LM336Z-12.
What are the potential failure modes of the 1N4742ATR?
- Common failure modes include exceeding the maximum power dissipation, exceeding the maximum current, or exposure to voltage spikes beyond its ratings.