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JANTX1N4990C
Introduction
The JANTX1N4990C is a high-reliability, military-grade semiconductor diode that belongs to the category of Zener diodes. This diode is widely used in various electronic circuits for voltage regulation and protection due to its unique characteristics. The JANTX1N4990C is packaged in a hermetically sealed glass package, ensuring its reliability in harsh environmental conditions.
Basic Information Overview
- Category: Zener Diode
- Use: Voltage regulation and protection in electronic circuits
- Characteristics: High reliability, military-grade, hermetically sealed glass package
- Package: Hermetically sealed glass package
- Essence: Semiconductor diode for precise voltage regulation
- Packaging/Quantity: Available in various packaging options, typically supplied in reels or tubes
Specifications
- Voltage Range: 3.9V to 200V
- Power Dissipation: 500mW
- Operating Temperature Range: -65°C to +175°C
- Zener Impedance: 10Ω to 1000Ω
- Tolerance: ±5% standard, tighter tolerances available on request
Detailed Pin Configuration
The JANTX1N4990C has a standard two-pin configuration with anode and cathode terminals. The physical dimensions and pin layout are as follows: - Anode (A) - Pin 1 - Cathode (K) - Pin 2
Functional Features
- Precise Voltage Regulation: The JANTX1N4990C maintains a constant voltage across its terminals, making it suitable for voltage regulation applications.
- Overvoltage Protection: It provides protection against voltage spikes and surges, safeguarding sensitive electronic components in circuits.
Advantages and Disadvantages
Advantages
- High Reliability: Designed for military and aerospace applications, ensuring long-term performance in demanding environments.
- Wide Voltage Range: Available in a wide range of voltage options, catering to diverse circuit requirements.
Disadvantages
- Limited Power Dissipation: The maximum power dissipation of 500mW may restrict its use in high-power applications.
- Tight Tolerance: Standard tolerance of ±5% may not be suitable for precision-critical applications without additional trimming.
Working Principles
The JANTX1N4990C operates based on the Zener effect, where it maintains a constant voltage drop across its terminals when reverse-biased. This allows it to regulate the voltage in a circuit by shunting excess current when the voltage exceeds the specified value.
Detailed Application Field Plans
The JANTX1N4990C finds extensive use in the following application fields: - Aerospace and Defense Electronics: Used in avionics, radar systems, and communication equipment for voltage regulation and transient protection. - Industrial Control Systems: Employed in power supplies, motor drives, and instrumentation for maintaining stable voltages and protecting sensitive components. - Telecommunications: Integrated into base stations, network equipment, and data transmission systems to ensure consistent voltage levels and surge protection.
Detailed and Complete Alternative Models
- JANTX1N746A: Similar military-grade Zener diode with a voltage range of 3.3V to 200V and a power dissipation of 500mW.
- JANTXV1N5554: High-reliability Zener diode offering a voltage range from 2.4V to 75V and a power dissipation of 500mW.
In conclusion, the JANTX1N4990C Zener diode stands as a reliable and essential component in electronic circuits requiring precise voltage regulation and protection. Its high reliability, wide voltage range, and military-grade construction make it a preferred choice in critical applications across various industries.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací JANTX1N4990C v technických řešeních
What is the JANTX1N4990C diode used for?
- The JANTX1N4990C diode is commonly used for voltage regulation, surge protection, and rectification in various technical solutions.
What are the key specifications of the JANTX1N4990C diode?
- The JANTX1N4990C diode is a 500mW Zener diode with a voltage range of 3.3V to 200V and a tolerance of ±5%.
How does the JANTX1N4990C diode provide surge protection?
- The JANTX1N4990C diode can clamp transient overvoltages by diverting excessive current away from sensitive components, thus providing surge protection.
In what types of technical solutions is the JANTX1N4990C diode commonly used?
- The JANTX1N4990C diode is frequently employed in power supplies, voltage regulators, instrumentation, and automotive electronics.
What is the temperature range for the JANTX1N4990C diode?
- The JANTX1N4990C diode operates within a temperature range of -65°C to +175°C, making it suitable for a wide range of environments.
Can the JANTX1N4990C diode be used in high-frequency applications?
- Yes, the JANTX1N4990C diode can be utilized in high-frequency applications due to its fast response time and low capacitance.
What are the potential failure modes of the JANTX1N4990C diode?
- Common failure modes include excessive current causing thermal runaway, voltage spikes leading to breakdown, and mechanical damage from mishandling.
How does the JANTX1N4990C diode contribute to voltage regulation?
- The JANTX1N4990C diode maintains a constant voltage across its terminals, aiding in stabilizing the output voltage in regulated power supplies.
What are the typical applications where the JANTX1N4990C diode is not recommended?
- The JANTX1N4990C diode may not be suitable for precision voltage references or ultra-low leakage current applications due to its inherent characteristics.
Are there any specific layout considerations when using the JANTX1N4990C diode in a circuit?
- It is important to minimize lead lengths, provide adequate heat sinking, and ensure proper PCB layout to optimize the performance and reliability of the JANTX1N4990C diode in a circuit.