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1N4748A-TR
Product Overview
The 1N4748A-TR is a Zener diode belonging to the semiconductor category. It is commonly used for voltage regulation and transient suppression in electronic circuits. This diode exhibits characteristics such as a fixed voltage breakdown, low dynamic impedance, and high reliability. The package type for the 1N4748A-TR is axial-lead glass, and it is available in various packaging quantities.
Specifications
- Voltage: 22V
- Power Dissipation: 1.0W
- Zener Voltage Tolerance: ±5%
- Operating Temperature Range: -65°C to +200°C
Detailed Pin Configuration
The 1N4748A-TR has a standard axial-lead configuration with the anode connected to the positive terminal and the cathode connected to the negative terminal.
Functional Features
- Voltage Regulation: The 1N4748A-TR provides stable voltage output under varying load conditions.
- Transient Suppression: It effectively suppresses voltage transients and protects sensitive components in the circuit.
Advantages and Disadvantages
Advantages
- Precise voltage regulation
- Low dynamic impedance
- High reliability
Disadvantages
- Limited power dissipation capability
- Voltage tolerance of ±5% may not be suitable for some applications
Working Principles
The 1N4748A-TR operates based on the principle of the Zener effect, where it maintains a constant voltage drop across its terminals when it is reverse-biased and operated within its specified current and power ratings.
Detailed Application Field Plans
The 1N4748A-TR finds extensive use in various applications including: - Voltage regulation in power supplies - Overvoltage protection in electronic circuits - Signal clamping and limiting
Detailed and Complete Alternative Models
Some alternative models to the 1N4748A-TR include: - 1N4733A-TR (5.1V Zener voltage) - 1N4742A-TR (12V Zener voltage) - 1N4756A-TR (68V Zener voltage)
In conclusion, the 1N4748A-TR Zener diode offers precise voltage regulation and transient suppression capabilities, making it a valuable component in various electronic circuits. While it has limitations in power dissipation and voltage tolerance, its reliability and performance make it a popular choice for many applications.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1N4748A-TR en soluciones técnicas
What is the 1N4748A-TR?
- The 1N4748A-TR is a Zener diode with a voltage rating of 22V and a power rating of 1W.
What are the typical applications of the 1N4748A-TR?
- The 1N4748A-TR is commonly used in voltage regulation, voltage reference, and overvoltage protection circuits.
How does the 1N4748A-TR work in voltage regulation?
- When operated in reverse-bias breakdown, the 1N4748A-TR maintains a nearly constant voltage across its terminals, providing stable voltage regulation.
Can the 1N4748A-TR be used for voltage reference?
- Yes, the 1N4748A-TR can be used as a stable voltage reference due to its precise breakdown voltage characteristics.
What are the key specifications to consider when using the 1N4748A-TR in a circuit?
- Key specifications include the breakdown voltage (22V), power dissipation (1W), and maximum operating temperature.
How does the 1N4748A-TR provide overvoltage protection?
- When the input voltage exceeds the breakdown voltage of the 1N4748A-TR, it conducts heavily, diverting excess current and protecting downstream components.
What are the typical operating conditions for the 1N4748A-TR?
- The 1N4748A-TR operates within a specified range of temperatures and should not exceed its maximum power dissipation rating.
Are there any considerations for circuit layout when using the 1N4748A-TR?
- Proper heat sinking and placement of the diode to minimize thermal effects are important considerations for circuit layout.
Can multiple 1N4748A-TR diodes be connected in series or parallel?
- Yes, multiple 1N4748A-TR diodes can be connected in series to increase the breakdown voltage or in parallel to increase the current-handling capability.
Where can I find detailed application notes for using the 1N4748A-TR in technical solutions?
- Detailed application notes for the 1N4748A-TR can be found in the manufacturer's datasheet, which provides comprehensive guidance on its usage in various technical solutions.