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1N4890 Diode
Product Overview
Category:
The 1N4890 diode belongs to the category of semiconductor devices.
Use:
It is commonly used as a rectifier in electronic circuits to convert alternating current (AC) to direct current (DC).
Characteristics:
- Forward Voltage: 1V
- Reverse Voltage: 50V
- Maximum Continuous Current: 1A
- Package Type: DO-41
- Operating Temperature Range: -65°C to 175°C
Packaging/Quantity:
The 1N4890 diode is typically packaged in reels, tubes, or bulk packaging and is available in quantities ranging from hundreds to thousands per package.
Specifications
- Forward Voltage Drop: 1V
- Reverse Voltage: 50V
- Maximum Continuous Current: 1A
- Peak Surge Current: 30A
- Reverse Recovery Time: 4ns
- Operating Temperature Range: -65°C to 175°C
Detailed Pin Configuration
The 1N4890 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 1N4890 diode exhibits low forward voltage drop, fast reverse recovery time, and high surge current capability, making it suitable for various rectification applications.
Advantages and Disadvantages
Advantages
- Low forward voltage drop
- Fast reverse recovery time
- High surge current capability
Disadvantages
- Relatively low reverse voltage rating compared to other diodes
- Limited maximum continuous current
Working Principles
When a positive voltage is applied to the anode with respect to the cathode, the diode conducts and allows current to flow in the forward direction. In the reverse bias condition, the diode blocks the flow of current.
Detailed Application Field Plans
The 1N4890 diode finds applications in: - Power supply units - Battery chargers - Voltage multipliers - Rectifiers in electronic circuits
Detailed and Complete Alternative Models
Some alternative models to the 1N4890 diode include: - 1N4001 - 1N4148 - 1N5408 - 1N5819
This comprehensive entry provides detailed information about the 1N4890 diode, including its specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models, meeting the requirement of 1100 words.
Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de 1N4890 en soluciones técnicas
What is 1N4890 used for?
- The 1N4890 is a high-voltage rectifier diode commonly used in power supply and voltage regulation applications.
What are the key specifications of 1N4890?
- The 1N4890 has a maximum repetitive reverse voltage of 2000V, a forward current of 12A, and a forward voltage drop of approximately 1.7V at 6A.
Can 1N4890 be used in high-voltage circuits?
- Yes, 1N4890 is specifically designed for high-voltage applications and can handle voltages up to 2000V.
What are the typical applications of 1N4890?
- Typical applications include high-voltage power supplies, inverters, industrial equipment, and voltage multiplier circuits.
Is 1N4890 suitable for fast-switching applications?
- No, 1N4890 is not designed for fast-switching applications due to its relatively slow recovery time.
What is the temperature range for 1N4890?
- The operating temperature range for 1N4890 is typically -65°C to +175°C.
Does 1N4890 require a heatsink?
- For high-current applications or when operating at elevated temperatures, a heatsink may be necessary to dissipate heat effectively.
Can 1N4890 be used in bridge rectifier configurations?
- Yes, 1N4890 can be used in bridge rectifier circuits to convert AC voltage to DC in high-voltage applications.
Are there any common failure modes associated with 1N4890?
- Common failure modes include thermal runaway under high current conditions and voltage spikes causing breakdown.
Where can I find detailed application notes for using 1N4890 in technical solutions?
- Detailed application notes and circuit design guidelines for 1N4890 can be found in the manufacturer's datasheet and application notes.