1N4738A
Product Overview
Category
1N4738A belongs to the category of semiconductor diodes.
Use
It is commonly used as a voltage regulator in electronic circuits.
Characteristics
- Zener diode
- Voltage regulator
- Small signal diode
- Low leakage current
Package
1N4738A is typically available in a DO-41 axial leaded package.
Essence
The essence of 1N4738A lies in its ability to regulate voltage and protect sensitive components in electronic circuits.
Packaging/Quantity
It is usually packaged in reels or tubes, with quantities varying based on manufacturer specifications.
Specifications
- Zener Voltage: 8.2V
- Power Dissipation: 1.0W
- Maximum Forward Voltage: 1.2V
- Operating Temperature Range: -65°C to +200°C
Detailed Pin Configuration
1N4738A has two pins, anode and cathode, which are identified by the color band on the diode body.
Functional Features
- Voltage regulation
- Overvoltage protection
- Stability in varying temperatures
Advantages
- Precise voltage regulation
- Compact size
- Wide operating temperature range
Disadvantages
- Limited power dissipation capability
- Sensitivity to reverse voltage
Working Principles
1N4738A operates based on the principle of the Zener effect, where it maintains a constant voltage across its terminals when reverse biased.
Detailed Application Field Plans
1N4738A 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 1N4738A include: - 1N4739A (9.1V Zener voltage) - 1N4740A (10V Zener voltage) - 1N4741A (11V Zener voltage)
In conclusion, 1N4738A is a crucial component in electronic circuits, providing stable voltage regulation and overvoltage protection. Its compact size and precise functionality make it a popular choice for various applications.
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What is the 1N4738A diode used for?
- The 1N4738A is a Zener diode commonly used for voltage regulation and stabilization in electronic circuits.
What is the voltage rating of the 1N4738A diode?
- The 1N4738A has a nominal voltage rating of 8.2 volts.
How does the 1N4738A diode regulate voltage?
- The 1N4738A operates in the reverse-biased breakdown region, maintaining a nearly constant voltage across its terminals when properly biased.
Can the 1N4738A be used for overvoltage protection?
- Yes, the 1N4738A can be employed to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.
What are the typical applications of the 1N4738A diode?
- Typical applications include voltage regulation in power supplies, voltage reference circuits, and as a component in signal conditioning circuits.
What is the maximum power dissipation of the 1N4738A diode?
- The 1N4738A has a maximum power dissipation of 1.3 watts.
Is the 1N4738A suitable for low current applications?
- Yes, the 1N4738A can be used in low current applications due to its ability to maintain a stable voltage across its terminals.
What is the temperature coefficient of the 1N4738A diode?
- The temperature coefficient of the 1N4738A is typically around -2.2 mV/°C, indicating a relatively stable voltage reference over a range of temperatures.
Can multiple 1N4738A diodes be connected in series or parallel?
- Multiple 1N4738A diodes can be connected in series to create higher voltage references, but connecting them in parallel is not recommended due to potential current imbalance.
Are there any precautions to consider when using the 1N4738A diode?
- It's important to ensure that the maximum power dissipation and current ratings are not exceeded, and proper heat sinking may be necessary in high-power applications to prevent overheating.