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1N4742PE3/TR8
Product Overview
Category
The 1N4742PE3/TR8 belongs to the category of Zener diodes.
Use
It is commonly used for voltage regulation and protection in electronic circuits.
Characteristics
- Zener voltage: 12V
- Power dissipation: 1.0W
- Package type: DO-41
- Operating temperature range: -65°C to +200°C
- Packaging/quantity: Tape & Reel, 3000 units per reel
Specifications
- Zener voltage: 11.4V to 12.6V
- Test current: 28.9mA
- Maximum reverse leakage current: 5μA
- Maximum voltage regulation: 50mV
Detailed Pin Configuration
The 1N4742PE3/TR8 has two pins, with the anode connected to the positive terminal and the cathode connected to the negative terminal.
Functional Features
- Provides a constant voltage output when the input voltage varies
- Protects sensitive components from overvoltage conditions
- Can be used as a voltage reference in circuits
Advantages and Disadvantages
Advantages
- Precise voltage regulation
- Compact size
- Wide operating temperature range
Disadvantages
- Limited power dissipation capability
- Sensitive to temperature variations
Working Principles
The 1N4742PE3/TR8 operates based on the Zener effect, where it maintains a nearly constant voltage across its terminals when reverse-biased.
Detailed Application Field Plans
This Zener diode is widely used in: - Voltage regulators - Overvoltage protection circuits - Voltage references
Detailed and Complete Alternative Models
Some alternative models to the 1N4742PE3/TR8 include: - 1N4732A - BZX55C12 - LM336Z-12
In conclusion, the 1N4742PE3/TR8 Zener diode is a crucial component in electronic circuits, providing precise voltage regulation and protection against overvoltage conditions. Its compact size and wide operating temperature range make it suitable for various applications in electronics.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 1N4742PE3/TR8 v technických řešeních
What is the 1N4742PE3/TR8 diode used for?
- The 1N4742PE3/TR8 is a Zener diode commonly used for voltage regulation and protection in electronic circuits.
What is the voltage rating of the 1N4742PE3/TR8 diode?
- The 1N4742PE3/TR8 has a nominal voltage of 12 volts, making it suitable for applications requiring a stable 12V reference voltage.
How does the 1N4742PE3/TR8 diode regulate voltage?
- The 1N4742PE3/TR8 operates in the reverse breakdown region, maintaining a constant voltage drop across its terminals, effectively regulating the output voltage.
Can the 1N4742PE3/TR8 be used for overvoltage protection?
- Yes, the 1N4742PE3/TR8 can be employed to protect sensitive components from overvoltage conditions by shunting excess voltage to ground.
What are the typical applications of the 1N4742PE3/TR8 diode?
- Common applications include voltage regulators, power supplies, voltage references, and signal conditioning circuits.
What is the maximum power dissipation of the 1N4742PE3/TR8 diode?
- The 1N4742PE3/TR8 has a maximum power dissipation of 1 watt, allowing it to handle moderate power levels.
Does the 1N4742PE3/TR8 have polarity?
- Yes, the 1N4742PE3/TR8 is a polarized device and must be connected with the correct orientation to function properly.
What is the temperature coefficient of the 1N4742PE3/TR8 diode?
- The temperature coefficient is typically around -2.2 mV/°C, indicating a relatively stable voltage reference over a range of temperatures.
Can multiple 1N4742PE3/TR8 diodes be connected in series or parallel?
- Yes, multiple diodes can be connected in series to create higher voltage references or in parallel to increase current-handling capability.
Are there any common failure modes associated with the 1N4742PE3/TR8 diode?
- Common failure modes include thermal runaway under high current conditions and voltage breakdown due to excessive reverse bias voltage. Proper heat sinking and voltage limiting measures should be implemented to mitigate these risks.