1N4973
Product Overview
Category:
The 1N4973 is a semiconductor diode belonging to the category of Zener diodes.
Use:
It is commonly used for voltage regulation and voltage reference applications.
Characteristics:
- Forward Voltage: 1.5V
- Power Dissipation: 500mW
- Zener Voltage Range: 3.3V to 100V
- Operating Temperature: -65°C to +200°C
Package:
The 1N4973 is typically available in a DO-35 glass package.
Essence:
The essence of the 1N4973 lies in its ability to maintain a constant voltage across its terminals, making it suitable for various electronic circuits.
Packaging/Quantity:
It is usually packaged in reels or tubes, with quantities varying based on manufacturer specifications.
Specifications
- Maximum Zener Impedance: 40Ω
- Reverse Leakage Current: 5μA
- Maximum Surge Current: 20A
Detailed Pin Configuration
The 1N4973 has two pins, anode (A) and cathode (K), with the anode being connected to the positive side of the circuit and the cathode to the negative side.
Functional Features
The 1N4973 operates as a voltage regulator by allowing current to flow in reverse when the voltage reaches the Zener voltage.
Advantages and Disadvantages
Advantages
- Precise voltage regulation
- High reliability
- Wide range of voltage options
Disadvantages
- Limited power dissipation capability
- Sensitivity to temperature variations
Working Principles
When the voltage across the diode reaches the Zener voltage, it starts conducting in the reverse direction, effectively regulating the voltage across its terminals.
Detailed Application Field Plans
The 1N4973 finds applications in various fields such as: - Voltage regulators in power supplies - Overvoltage protection circuits - Voltage reference sources in instrumentation
Detailed and Complete Alternative Models
Some alternative models to the 1N4973 include: - 1N746A - 1N4733A - BZX85C
In conclusion, the 1N4973 Zener diode serves as a reliable and precise voltage regulator, finding widespread use in electronic circuits requiring stable voltage references and regulation.
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تکنیکی حل میں 1N4973 کے اطلاق سے متعلق 10 عام سوالات اور جوابات کی فہرست بنائیں
What is 1N4973 and what is its application?
- 1N4973 is a silicon power rectifier diode commonly used in power supply circuits, voltage regulation, and general purpose applications.
What are the key specifications of 1N4973?
- The 1N4973 diode has a maximum repetitive reverse voltage of 200 volts, a forward current of 3 amperes, and a forward voltage drop of around 1 volt at the rated current.
Can 1N4973 be used for high-frequency applications?
- No, 1N4973 is not suitable for high-frequency applications due to its relatively slow recovery time.
Is 1N4973 suitable for use in switching power supplies?
- Yes, 1N4973 can be used in low to moderate frequency switching power supply designs.
What are the typical operating temperatures for 1N4973?
- The operating temperature range for 1N4973 is typically between -65°C to +175°C.
Does 1N4973 require a heatsink for certain applications?
- Yes, for high current or high power applications, a heatsink may be necessary to dissipate heat effectively.
Can 1N4973 be used in reverse voltage protection circuits?
- Yes, 1N4973 can be used in reverse voltage protection circuits due to its high reverse voltage capability.
Are there any common failure modes associated with 1N4973?
- Common failure modes include thermal runaway under high current conditions and potential damage from excessive reverse voltage.
What are some alternative diodes to consider if 1N4973 is not available?
- Alternatives to 1N4973 include diodes such as 1N400x series, 1N540x series, or other similar power rectifier diodes with compatible specifications.
Can 1N4973 be used in automotive applications?
- Yes, 1N4973 can be used in certain automotive applications where its voltage and current ratings are suitable. However, it's important to ensure that it meets specific automotive industry standards for reliability and performance.