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1N4738A-TR
Product Overview
Category
The 1N4738A-TR belongs to the category of semiconductor devices, specifically within the realm of diodes.
Use
This product is commonly used in electronic circuits for voltage regulation and rectification purposes.
Characteristics
The 1N4738A-TR is a silicon planar power Zener diode with a high reliability and low leakage current. It is designed to provide a stable voltage reference under varying operating conditions.
Package
The 1N4738A-TR is typically available in a DO-41 axial leaded package, making it suitable for through-hole mounting on printed circuit boards.
Essence
The essence of the 1N4738A-TR lies in its ability to maintain a constant voltage across its terminals, ensuring consistent performance in electronic applications.
Packaging/Quantity
These diodes are often supplied in reels or tubes, with quantities varying based on manufacturer and distributor specifications.
Specifications
- Voltage Range: 8.2V
- Power Dissipation: 1.0W
- Operating Temperature Range: -65°C to +200°C
- Zener Test Current: 20mA
Detailed Pin Configuration
The 1N4738A-TR features a standard axial lead configuration with two leads, one connected to the anode and the other to the cathode.
Functional Features
The primary function of the 1N4738A-TR is to maintain a constant voltage drop across its terminals when it is conducting in the reverse direction.
Advantages and Disadvantages
Advantages
- High reliability
- Low leakage current
- Stable voltage reference
Disadvantages
- Limited voltage range
- Power dissipation constraints
Working Principles
The working principle of the 1N4738A-TR is based on the Zener effect, where it exhibits a controlled breakdown at a specific voltage, allowing it to regulate voltage in electronic circuits.
Detailed Application Field Plans
The 1N4738A-TR finds extensive use in various electronic applications such as voltage regulators, voltage references, and surge suppressors. Its stable voltage characteristics make it suitable for precision electronic systems.
Detailed and Complete Alternative Models
Some alternative models to the 1N4738A-TR include: - 1N4739A-TR - 1N4740A-TR - 1N4741A-TR - 1N4742A-TR
These alternatives offer different voltage ratings while maintaining similar characteristics and package configurations.
In conclusion, the 1N4738A-TR serves as a reliable and stable voltage reference component in electronic circuits, finding widespread use in various applications that demand precise voltage regulation and control.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 1N4738A-TR v technických řešeních
What is the 1N4738A-TR?
- The 1N4738A-TR is a Zener diode with a voltage rating of 8.2V, commonly used in electronic circuits for voltage regulation and protection.
How does the 1N4738A-TR work?
- The 1N4738A-TR operates by allowing current to flow in the forward direction like a normal diode, but also permits it to flow in the reverse direction when the voltage reaches the breakdown voltage (8.2V in this case).
What are the typical applications of the 1N4738A-TR?
- Common applications include voltage regulation, overvoltage protection, voltage reference, and signal clamping in various electronic circuits.
What is the maximum power dissipation of the 1N4738A-TR?
- The maximum power dissipation is typically around 1.3W, making it suitable for low to moderate power applications.
Can the 1N4738A-TR be used in reverse bias?
- Yes, the 1N4738A-TR is designed to operate in both forward and reverse bias conditions, making it suitable for protection against overvoltage conditions.
What is the temperature coefficient of the 1N4738A-TR?
- The temperature coefficient is approximately -2mV/°C, which means the voltage reference will change by 2mV for every degree Celsius change in temperature.
What is the typical forward voltage drop of the 1N4738A-TR?
- The typical forward voltage drop is around 1.2V at a specified forward current.
Is the 1N4738A-TR suitable for high-frequency applications?
- While it can function at moderate frequencies, it may not be ideal for high-frequency applications due to its inherent capacitance and response time.
What are the key differences between the 1N4738A-TR and other Zener diodes?
- The 1N4738A-TR stands out due to its specific breakdown voltage of 8.2V, which sets it apart from other Zener diodes with different breakdown voltages.
Are there any precautions to consider when using the 1N4738A-TR?
- It's important to ensure that the maximum power dissipation and current ratings are not exceeded, and to handle the diode properly to prevent damage from static electricity during handling and installation.