Microsemi Corporation
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2N1702

2N1702 Transistor

Product Overview

The 2N1702 is a bipolar junction transistor (BJT) belonging to the category of small-signal transistors. It is commonly used for amplification and switching applications due to its high gain and low noise characteristics. The transistor is typically packaged in a TO-39 metal can package and is available in various quantities.

Basic Information

  • Category: Small-signal transistor
  • Use: Amplification and switching
  • Characteristics: High gain, low noise
  • Package: TO-39 metal can
  • Packaging/Quantity: Available in various quantities

Specifications

The 2N1702 transistor has the following specifications: - Maximum Collector-Base Voltage: 60V - Maximum Collector Current: 100mA - Power Dissipation: 300mW - Transition Frequency: 50MHz - Operating Temperature Range: -65°C to 200°C

Detailed Pin Configuration

The 2N1702 transistor features three pins: 1. Collector (C): This pin is connected to the positive supply voltage. 2. Base (B): The input terminal that controls the transistor's conductivity. 3. Emitter (E): The output terminal where the current flows out of the transistor.

Functional Features

The 2N1702 transistor offers the following functional features: - High gain amplification - Low noise operation - Fast switching speed

Advantages and Disadvantages

Advantages

  • High gain makes it suitable for amplification applications
  • Low noise operation ensures clean signal processing
  • Fast switching speed enables rapid on/off transitions

Disadvantages

  • Limited maximum collector current may restrict high-power applications
  • Relatively lower transition frequency compared to some modern alternatives

Working Principles

The 2N1702 operates based on the principles of bipolar junction transistors. When a small current is applied to the base terminal, it controls the larger current flowing between the collector and emitter terminals, allowing for amplification or switching of signals.

Detailed Application Field Plans

The 2N1702 transistor finds applications in various fields, including: - Audio amplification circuits - Signal processing and conditioning - Switching circuits in electronic devices - Oscillator and RF amplifier circuits

Detailed and Complete Alternative Models

Some alternative models to the 2N1702 transistor include: - 2N2222: A widely used general-purpose NPN transistor with similar characteristics - BC547: Another popular general-purpose NPN transistor suitable for small-signal applications - 2N3904: NPN transistor with high gain and low noise, commonly used in amplification circuits

In conclusion, the 2N1702 transistor is a versatile component with high gain and low noise characteristics, making it suitable for various amplification and switching applications across different fields.

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  1. What is the 2N1702 transistor used for?

    • The 2N1702 is a general-purpose NPN bipolar junction transistor commonly used for amplification and switching applications in electronic circuits.

  2. What are the typical operating conditions for the 2N1702?

    • The 2N1702 transistor typically operates at a maximum collector current of 100mA, with a maximum collector-emitter voltage of 40V.

  3. How do I identify the pinout of the 2N1702 transistor?

    • The pinout of the 2N1702 transistor is typically identified as the emitter (E), base (B), and collector (C) pins.

  4. Can the 2N1702 be used for audio amplification?

    • Yes, the 2N1702 can be used for small-signal audio amplification due to its low noise and high gain characteristics.

  5. What are some common circuit configurations using the 2N1702?

    • Common circuit configurations include common emitter amplifiers, switch circuits, and signal amplification stages in electronic devices.

  6. What are the key parameters to consider when designing with the 2N1702?

    • Key parameters include the maximum collector current, maximum power dissipation, gain bandwidth product, and transition frequency.

  7. Can the 2N1702 be used in low-power applications?

    • Yes, the 2N1702 is suitable for low-power applications due to its low saturation voltage and low leakage current.

  8. Are there any specific considerations for driving inductive loads with the 2N1702?

    • When driving inductive loads, it's important to use appropriate flyback diodes to protect the transistor from voltage spikes.

  9. What are the typical temperature ranges for the 2N1702?

    • The 2N1702 transistor is typically rated for operation within a temperature range of -65°C to 200°C.

  10. Can the 2N1702 be replaced with other transistors in a circuit?

    • Depending on the specific circuit requirements, the 2N1702 can often be replaced with similar NPN transistors such as the 2N2222 or BC547, but careful consideration of specifications is necessary.