1N4749A - Zener Diode
Product Overview
Category
The 1N4749A is a silicon planar power Zener diode.
Use
It is commonly used for voltage regulation and voltage reference applications.
Characteristics
- Voltage: 24V
- Power Dissipation: 1.0W
- Package: DO-41
- Essence: Silicon Planar Power Zener Diode
- Packaging/Quantity: Available in tape and reel packaging, with quantities varying by manufacturer.
Specifications
- Zener Voltage: 24V
- Tolerance: ±5%
- Maximum Reverse Leakage Current: 5μA
- Maximum Zener Impedance: 20Ω
- Operating Temperature Range: -65°C to +200°C
Detailed Pin Configuration
The 1N4749A has two pins, with the cathode connected to the case.
Functional Features
- Precise voltage regulation
- Low impedance
- High reliability
- Wide operating temperature range
Advantages
- Stable voltage reference
- Easy to use
- Suitable for various electronic circuits
- Robust construction
Disadvantages
- Limited current handling capability
- Sensitivity to temperature variations
Working Principles
The 1N4749A operates based on the Zener effect, where it maintains a constant voltage across its terminals when reverse biased.
Detailed Application Field Plans
The 1N4749A is widely used in: - Voltage regulators - Power supplies - Signal clamping - Surge suppressors - Instrumentation
Detailed and Complete Alternative Models
- 1N4733A (5.1V)
- 1N4734A (5.6V)
- 1N4735A (6.2V)
- 1N4736A (6.8V)
- 1N4737A (7.5V)
- 1N4738A (8.2V)
- 1N4739A (9.1V)
- 1N4740A (10V)
- 1N4741A (11V)
- 1N4742A (12V)
- 1N4743A (13V)
- 1N4744A (15V)
- 1N4745A (16V)
- 1N4746A (18V)
- 1N4747A (20V)
- 1N4748A (22V)
- 1N4749A (24V) - Subject of this entry
- 1N4750A (27V)
- 1N4751A (30V)
This comprehensive range of alternative models provides options for various voltage requirements.
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10個與1N4749A在技術方案中應用相關的常見問題與解答
What is the 1N4749A diode used for?
- The 1N4749A is a Zener diode commonly used for voltage regulation and protection in electronic circuits.
What is the voltage rating of the 1N4749A diode?
- The 1N4749A has a nominal voltage of 24V, making it suitable for applications requiring stable voltage references.
How does the 1N4749A diode regulate voltage?
- The 1N4749A operates in the reverse breakdown region, maintaining a constant voltage drop across its terminals to regulate the output voltage.
Can the 1N4749A be used for overvoltage protection?
- Yes, the 1N4749A can be employed to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.
What are typical applications of the 1N4749A diode?
- Common applications include voltage regulators, voltage references, and overvoltage protection in power supplies, amplifiers, and instrumentation circuits.
What is the maximum power dissipation of the 1N4749A diode?
- The 1N4749A has a maximum power dissipation of 1.3W, allowing it to handle moderate power levels in circuit designs.
Is the 1N4749A suitable for precision voltage references?
- While the 1N4749A provides stable voltage regulation, it may not offer the precision required for highly accurate voltage references.
What are the temperature considerations for the 1N4749A diode?
- The 1N4749A's performance is affected by temperature, so proper thermal management is important to ensure stable operation in varying environmental conditions.
Can multiple 1N4749A diodes be connected in series or parallel?
- Connecting multiple 1N4749A diodes in series can increase the overall voltage rating, while connecting them in parallel can increase the current-handling capability.
Are there any alternatives to the 1N4749A diode with similar characteristics?
- Yes, other Zener diodes with comparable voltage ratings and characteristics, such as the BZX55C24 or 1N4738A, can be considered as alternatives in specific applications.