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1N4747PE3/TR8 - Semiconductor Diode
Basic Information Overview
- Category: Semiconductor Diode
- Use: Voltage regulation and rectification
- Characteristics: Zener diode, low leakage current, high reliability
- Package: DO-41 (Axial Lead)
- Essence: Regulates voltage by maintaining a constant output voltage under varying load conditions
- Packaging/Quantity: Typically available in reels of 2000 units
Specifications
- Voltage: 20V
- Power Dissipation: 1.0W
- Zener Voltage Tolerance: ±5%
- Operating Temperature Range: -65°C to +175°C
Detailed Pin Configuration
The 1N4747PE3/TR8 is a two-terminal device with the following pin configuration: - Anode (A): Connected to the positive side of the circuit - Cathode (K): Connected to the negative side of the circuit
Functional Features
- Zener Effect: Exhibits a sharp breakdown voltage at which it starts conducting in reverse bias
- Voltage Regulation: Maintains a nearly constant voltage across its terminals, useful for stabilizing power supply voltages
- Low Leakage Current: Minimizes power loss and improves efficiency
Advantages and Disadvantages
- Advantages:
- Precise voltage regulation
- High reliability and stability
- Low cost
- Disadvantages:
- Limited power dissipation capability
- Susceptible to damage from excessive current or voltage spikes
Working Principles
The 1N4747PE3/TR8 operates based on the Zener effect, where it maintains a constant voltage drop across its terminals when reverse biased. This allows it to regulate voltage and protect circuits from overvoltage conditions.
Detailed Application Field Plans
- Voltage Regulation: Used in power supplies to maintain a stable output voltage
- Overvoltage Protection: Safeguards sensitive components from voltage spikes
- Voltage Reference: Provides a stable reference voltage for analog circuits
Detailed and Complete Alternative Models
- 1N4733A: 5.1V Zener diode
- 1N4742A: 12V Zener diode
- 1N4749A: 24V Zener diode
This comprehensive range of alternative models provides options for different voltage regulation requirements.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1N4747PE3/TR8 en soluciones técnicas
What is the 1N4747PE3/TR8 diode used for?
- The 1N4747PE3/TR8 is a Zener diode commonly used for voltage regulation and protection in electronic circuits.
What is the voltage rating of the 1N4747PE3/TR8 diode?
- The 1N4747PE3/TR8 has a nominal voltage of 20V, making it suitable for applications requiring precise voltage regulation.
How does the 1N4747PE3/TR8 diode work?
- The 1N4747PE3/TR8 operates in the reverse-biased breakdown region, allowing it to maintain a constant voltage across its terminals when properly connected in a circuit.
Can the 1N4747PE3/TR8 be used for overvoltage protection?
- Yes, the 1N4747PE3/TR8 can be employed to protect sensitive components from overvoltage conditions by shunting excess voltage away from the protected circuit.
What are typical applications of the 1N4747PE3/TR8 diode?
- Common applications include voltage regulation in power supplies, voltage reference circuits, and overvoltage protection in various electronic systems.
What is the maximum power dissipation of the 1N4747PE3/TR8 diode?
- The 1N4747PE3/TR8 has a maximum power dissipation of 1.0W, allowing it to handle moderate power levels in typical applications.
Is the 1N4747PE3/TR8 suitable for automotive electronics?
- Yes, the 1N4747PE3/TR8 can be used in automotive electronics for voltage regulation and transient protection purposes.
Does the 1N4747PE3/TR8 require a heat sink in high-power applications?
- In high-power applications, it is advisable to use a heat sink to ensure the 1N4747PE3/TR8 operates within its temperature limits and maintains stability.
Can multiple 1N4747PE3/TR8 diodes be connected in series or parallel?
- Yes, multiple 1N4747PE3/TR8 diodes can be connected in series to increase the breakdown voltage or in parallel to share current in higher power applications.
Are there any specific layout considerations when using the 1N4747PE3/TR8 in a PCB design?
- It is important to place decoupling capacitors near the 1N4747PE3/TR8 to minimize noise and ensure stable operation. Additionally, proper trace routing and thermal management should be considered for optimal performance.