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1N4478 Diode
Product Overview
Category:
The 1N4478 diode belongs to the category of semiconductor devices.
Use:
It is commonly used in electronic circuits for rectification, voltage regulation, and signal demodulation.
Characteristics:
- Forward Voltage: 0.7V
- Reverse Voltage: 200V
- Maximum Continuous Current: 1A
- Package Type: DO-41
- Operating Temperature Range: -65°C to +175°C
Packaging/Quantity:
The 1N4478 diode is typically available in bulk packaging with quantities ranging from hundreds to thousands per reel or box.
Specifications
- Forward Voltage Drop: 0.7V
- Reverse Voltage: 200V
- Maximum Continuous Current: 1A
- Peak Surge Current: 30A
- Junction Temperature: -65°C to +175°C
- Storage Temperature: -65°C to +175°C
Detailed Pin Configuration
The 1N4478 diode has two pins, an anode, and a cathode. The anode is connected to the positive terminal of the circuit, while the cathode is connected to the negative terminal.
Functional Features
The 1N4478 diode acts as a one-way valve for electric current, allowing it to flow in only one direction. It exhibits low forward voltage drop and high reverse voltage capability, making it suitable for various applications.
Advantages
- Low forward voltage drop
- High reverse voltage capability
- Compact DO-41 package
- Wide operating temperature range
Disadvantages
- Limited maximum continuous current compared to higher power diodes
- Relatively lower peak surge current rating
Working Principles
The 1N4478 diode operates based on the principle of semiconductor junction behavior. When a positive voltage is applied to the anode with respect to the cathode, the diode conducts current. In reverse bias, the diode blocks the flow of current.
Detailed Application Field Plans
The 1N4478 diode finds applications in: - Power supply circuits - Voltage regulation circuits - Signal demodulation circuits - Overvoltage protection circuits
Detailed and Complete Alternative Models
Some alternative models to the 1N4478 diode include: - 1N4001 - 1N5819 - 1N5408 - 1N4148
In conclusion, the 1N4478 diode is a versatile semiconductor device with applications in various electronic circuits. Its unique combination of characteristics makes it suitable for diverse design requirements.
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Énumérez 10 questions et réponses courantes liées à l'application de 1N4478 dans les solutions techniques
What is the 1N4478 diode used for?
- The 1N4478 diode is commonly used for general-purpose rectification and switching applications.
What are the key specifications of the 1N4478 diode?
- The 1N4478 diode typically has a maximum repetitive peak reverse voltage of 1000V, a forward current of 3A, and a forward voltage drop of around 1V at the rated current.
Can the 1N4478 diode be used in high-voltage applications?
- Yes, the 1N4478 diode's high peak reverse voltage makes it suitable for use in high-voltage applications such as power supplies and inverters.
Is the 1N4478 diode suitable for fast-switching applications?
- While the 1N4478 diode is not specifically designed for fast-switching, it can still be used in moderate-speed switching applications.
What are some common circuit configurations where the 1N4478 diode is used?
- The 1N4478 diode is often used in full-wave rectifier circuits, bridge rectifiers, and freewheeling diode applications.
Does the 1N4478 diode require a heatsink in high-power applications?
- Yes, in high-power applications, it is recommended to use a heatsink to dissipate heat and ensure the diode operates within its temperature limits.
Can the 1N4478 diode handle surge currents?
- Yes, the 1N4478 diode is capable of handling short-duration surge currents, making it suitable for transient voltage suppression and protection circuits.
What are the typical operating temperatures for the 1N4478 diode?
- The 1N4478 diode is designed to operate within a temperature range of -65°C to 175°C, making it suitable for a wide range of environments.
Are there any common failure modes associated with the 1N4478 diode?
- Common failure modes include thermal runaway under high-current conditions and breakdown due to excessive reverse voltage.
Where can I find detailed application notes for using the 1N4478 diode in technical solutions?
- Detailed application notes for the 1N4478 diode can be found in manufacturer datasheets, technical manuals, and application guides provided by semiconductor companies.