BC847A/SNR
Product Overview
Category: Transistor
Use: Amplification and switching in electronic circuits
Characteristics: Small signal NPN transistor, high current gain, low voltage drop
Package: SOT-23
Essence: Small-signal amplification
Packaging/Quantity: Reel of 3000 units
Specifications
- Collector-Base Voltage (VCBO): 45V
- Collector-Emitter Voltage (VCEO): 45V
- Emitter-Base Voltage (VEBO): 6V
- Collector Current (IC): 100mA
- Power Dissipation (Ptot): 250mW
- Transition Frequency (ft): 200MHz
- Operating Temperature Range: -55°C to 150°C
Detailed Pin Configuration
- Emitter (E)
- Base (B)
- Collector (C)
Functional Features
- High current gain
- Low saturation voltage
- Fast switching speed
Advantages and Disadvantages
Advantages: - High current gain allows for small-signal amplification - Low voltage drop reduces power dissipation - Fast switching speed enables quick response in electronic circuits
Disadvantages: - Limited collector current compared to power transistors - Limited power dissipation capability
Working Principles
The BC847A/SNR is a small-signal NPN transistor that operates by controlling the flow of current between the collector and emitter terminals through the base terminal. When a small current is applied to the base, it controls a much larger current flowing from the collector to the emitter, allowing for amplification and switching functions in electronic circuits.
Detailed Application Field Plans
The BC847A/SNR is commonly used in audio amplifiers, signal processing circuits, and general purpose switching applications. Its high current gain and fast switching speed make it suitable for low-power applications where small-signal amplification and rapid switching are required.
Detailed and Complete Alternative Models
- BC547B
- 2N3904
- 2SC945
Note: The above information provides a comprehensive overview of the BC847A/SNR transistor, including its specifications, features, application, and alternatives.
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10个与BC847A/SNR在技术解决方案中的应用相关的常见问题及解答
What is the BC847A/SNR transistor used for?
- The BC847A/SNR is a general-purpose NPN bipolar junction transistor commonly used in amplification and switching applications.
What are the key specifications of the BC847A/SNR transistor?
- The BC847A/SNR transistor typically has a maximum collector current of 100mA, a maximum collector-emitter voltage of 45V, and a maximum power dissipation of 250mW.
How can I identify the pinout of the BC847A/SNR transistor?
- The pinout of the BC847A/SNR transistor is typically Emitter-Base-Collector (EBC) when viewing the flat side with the leads pointing downward.
What are some common circuit configurations using the BC847A/SNR transistor?
- Common circuit configurations include common emitter amplifiers, switch circuits, and oscillator circuits.
What are the typical operating conditions for the BC847A/SNR transistor?
- The BC847A/SNR transistor is typically operated within a temperature range of -55°C to 150°C and is suitable for low to medium frequency applications.
Can the BC847A/SNR transistor be used for audio amplification?
- Yes, the BC847A/SNR transistor can be used in small signal audio amplification applications due to its low noise and high gain characteristics.
What are the recommended biasing techniques for the BC847A/SNR transistor?
- Common biasing techniques include fixed bias, emitter bias, and voltage divider bias, depending on the specific application requirements.
Are there any alternative transistors that can be used as substitutes for the BC847A/SNR?
- Yes, alternatives such as BC547, 2N2222, and 2N3904 can be used as substitutes, but it's important to consider their specific characteristics and limitations.
What are the typical failure modes of the BC847A/SNR transistor?
- Common failure modes include thermal runaway, saturation, and breakdown due to excessive voltage or current.
Where can I find detailed application notes and reference designs for the BC847A/SNR transistor?
- Detailed application notes and reference designs can often be found in the datasheet provided by the manufacturer, as well as in technical literature and online resources related to transistor applications.