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MJ802 Transistor
Product Overview
Category
The MJ802 transistor belongs to the category of power transistors.
Use
It is commonly used as a high-power amplifier or switching device in electronic circuits.
Characteristics
- High voltage capability
- High current capability
- Fast switching speed
Package
The MJ802 transistor is typically available in a TO-3 metal can package.
Essence
This transistor is essential for amplifying and controlling high-power signals in various electronic applications.
Packaging/Quantity
It is usually packaged individually and sold as single units.
Specifications
- Maximum Collector-Emitter Voltage: 140V
- Maximum Collector Current: 15A
- Power Dissipation: 200W
- Transition Frequency: 2MHz
- Operating Temperature Range: -65°C to 200°C
Detailed Pin Configuration
The MJ802 transistor has three pins: 1. Base (B) 2. Emitter (E) 3. Collector (C)
Functional Features
- High voltage and current handling capabilities
- Fast switching speed
- Low saturation voltage
Advantages
- Suitable for high-power applications
- Robust construction
- Wide operating temperature range
Disadvantages
- Relatively large physical size
- Higher cost compared to low-power transistors
Working Principles
The MJ802 transistor operates based on the principles of amplification and control of electrical signals. When a small signal is applied at the base terminal, it controls the larger current flowing between the collector and emitter terminals.
Detailed Application Field Plans
The MJ802 transistor finds extensive use in the following applications: - Audio amplifiers - Power supplies - Motor control circuits - Switching regulators - High-power LED drivers
Detailed and Complete Alternative Models
Some alternative models to the MJ802 transistor include: - MJ4502 - 2N3055 - TIP35C - MJE2955
In conclusion, the MJ802 transistor is a crucial component in high-power electronic circuits, offering robust performance and reliability in various applications.
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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MJ802 v technických řešeních
What is MJ802?
- MJ802 is a high-power NPN silicon transistor commonly used in audio amplifier and power switching applications.
What are the typical applications of MJ802?
- MJ802 is often used in audio amplifier circuits, power supply circuits, and high-power switching applications.
What are the key specifications of MJ802?
- The key specifications of MJ802 include a collector-emitter voltage (VCEO) of 140V, a collector current (IC) of 15A, and a power dissipation (Ptot) of 150W.
How do I connect MJ802 in an audio amplifier circuit?
- In an audio amplifier circuit, MJ802 is typically connected as a power output transistor, driving the speaker load through a suitable biasing and driver circuit.
Can MJ802 be used in a switching power supply?
- Yes, MJ802 can be used in switching power supply designs to handle high currents and voltages.
What are the common failure modes of MJ802?
- Common failure modes of MJ802 include thermal runaway due to inadequate heat sinking, overcurrent conditions leading to breakdown, and voltage spikes causing damage.
How do I ensure proper heat dissipation for MJ802?
- Proper heat dissipation for MJ802 can be ensured by using a suitable heat sink and ensuring adequate airflow around the transistor.
What are the recommended operating conditions for MJ802?
- The recommended operating conditions for MJ802 include a maximum collector current (IC), maximum collector-emitter voltage (VCEO), and a safe operating temperature range.
Can MJ802 be used in automotive applications?
- Yes, MJ802 can be used in automotive applications such as car audio amplifiers and power control circuits.
Where can I find the datasheet for MJ802?
- The datasheet for MJ802 can be found on semiconductor manufacturer websites or electronic component distributor websites.