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MPSA77
Product Overview
Category
MPSA77 belongs to the category of bipolar junction transistors (BJTs).
Use
It is commonly used as a general-purpose amplifier or switch in electronic circuits.
Characteristics
- Low noise figure
- High current gain
- Medium power dissipation
Package
MPSA77 is typically available in a TO-92 package.
Essence
The essence of MPSA77 lies in its ability to amplify and switch electronic signals with high efficiency.
Packaging/Quantity
It is usually packaged in reels, tubes, or bulk quantities depending on the supplier.
Specifications
- Collector-Base Voltage: 45V
- Collector-Emitter Voltage: 45V
- Emitter-Base Voltage: 5V
- Collector Current - Continuous: 100mA
- Power Dissipation: 625mW
- DC Current Gain (hFE) (Min): 100
- Transition Frequency: 100MHz
Detailed Pin Configuration
- Collector (C)
- Base (B)
- Emitter (E)
Functional Features
- High current gain allows for small base current to control large collector current.
- Low noise figure makes it suitable for low-noise amplification applications.
- Medium power dissipation enables it to handle moderate power levels.
Advantages
- Versatile use in various electronic circuits.
- Low noise figure enhances signal fidelity.
- High current gain provides efficient signal amplification.
Disadvantages
- Limited power dissipation may restrict usage in high-power applications.
- Moderate voltage and current ratings compared to other transistors in its class.
Working Principles
MPSA77 operates based on the principles of bipolar junction transistors, where the flow of current between the collector and emitter is controlled by the base current.
Detailed Application Field Plans
MPSA77 finds application in: - Audio amplifiers - Signal amplification circuits - Switching circuits - Oscillators
Detailed and Complete Alternative Models
Some alternative models to MPSA77 include: - BC547 - 2N3904 - 2N2222
In conclusion, MPSA77 is a versatile bipolar junction transistor with high current gain and low noise figure, making it suitable for a wide range of electronic applications.
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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan MPSA77 dalam solusi teknis
What is MPSA77?
- MPSA77 is a high voltage NPN Darlington transistor commonly used in switching applications.
What are the typical applications of MPSA77?
- MPSA77 is often used in applications such as relay drivers, lamp drivers, and high voltage switching circuits.
What is the maximum collector-emitter voltage for MPSA77?
- The maximum collector-emitter voltage for MPSA77 is 300V.
What is the maximum collector current for MPSA77?
- The maximum collector current for MPSA77 is 500mA.
What is the gain (hFE) of MPSA77?
- The gain (hFE) of MPSA77 typically ranges from 1000 to 10000.
Can MPSA77 be used for low voltage applications?
- While MPSA77 is designed for high voltage applications, it can also be used in low voltage applications with appropriate circuit design.
Is MPSA77 suitable for use in audio amplifier circuits?
- MPSA77 is not typically used in audio amplifier circuits due to its high voltage and low current characteristics.
What are the thermal characteristics of MPSA77?
- MPSA77 has a maximum junction temperature of 150°C and a thermal resistance of 83°C/W.
Can MPSA77 be used in automotive applications?
- MPSA77 is not specifically designed for automotive applications and may not meet the stringent requirements for automotive-grade components.
Are there any common failure modes associated with MPSA77?
- Common failure modes for MPSA77 include overvoltage stress leading to breakdown and excessive power dissipation causing thermal failure.