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BC857B/DG/B3,215
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BC857B/DG/B3,215

Product Overview

  • Category: Transistor
  • Use: Amplification and switching in electronic circuits
  • Characteristics: Small signal NPN transistor, low power dissipation, high current gain
  • Package: SOT-23
  • Essence: General-purpose amplifier
  • Packaging/Quantity: Tape and reel, 3000 pieces per reel

Specifications

  • Collector-Base Voltage (VCBO): 45V
  • Collector-Emitter Voltage (VCEO): 45V
  • Emitter-Base Voltage (VEBO): 5V
  • Collector Current (IC): 100mA
  • Power Dissipation (Ptot): 250mW
  • Transition Frequency (fT): 100MHz
  • Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

The BC857B/DG/B3,215 transistor has three pins: 1. Emitter (E) 2. Base (B) 3. Collector (C)

Functional Features

  • High current gain
  • Low power dissipation
  • Fast switching speed
  • Small package size

Advantages and Disadvantages

Advantages: - Suitable for low-power applications - Compact SOT-23 package - High transition frequency

Disadvantages: - Limited collector current compared to other transistors - Relatively low breakdown voltage

Working Principles

The BC857B/DG/B3,215 operates as a small-signal NPN transistor, amplifying and switching electronic signals. When a small current flows into the base, it controls a much larger current between the collector and emitter.

Detailed Application Field Plans

This transistor is commonly used in audio amplifiers, signal amplification circuits, and low-power switching applications. Its small size and high current gain make it suitable for portable electronic devices and compact circuit designs.

Detailed and Complete Alternative Models

  • BC847B/DG/B3,215
  • BC856B/DG/B3,215
  • 2N3904
  • 2N2222A

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací BC857B/DG/B3,215 v technických řešeních

  1. What is the BC857B/DG/B3,215 transistor used for?

    • The BC857B/DG/B3,215 is a general-purpose PNP transistor commonly used for amplification and switching applications in electronic circuits.

  2. What are the typical operating conditions for the BC857B/DG/B3,215?

    • The BC857B/DG/B3,215 transistor typically operates at a maximum collector current of 100mA and a maximum collector-emitter voltage of 45V.

  3. Can the BC857B/DG/B3,215 be used for audio amplification?

    • Yes, the BC857B/DG/B3,215 can be used for small-signal audio amplification due to its low noise and high gain characteristics.

  4. What are the pin configurations of the BC857B/DG/B3,215?

    • The BC857B/DG/B3,215 transistor has three pins: the emitter, base, and collector, which are arranged in a specific configuration on the package.

  5. Is the BC857B/DG/B3,215 suitable for low-power switching applications?

    • Yes, the BC857B/DG/B3,215 is suitable for low-power switching applications due to its moderate current and voltage ratings.

  6. What are some common alternatives to the BC857B/DG/B3,215 transistor?

    • Common alternatives to the BC857B/DG/B3,215 include the BC557B/DG/B3,215 (NPN counterpart) and other similar general-purpose transistors with compatible specifications.

  7. Are there any specific thermal considerations when using the BC857B/DG/B3,215?

    • It is important to consider the thermal dissipation of the BC857B/DG/B3,215 transistor, especially when operating it near its maximum ratings, to prevent overheating.

  8. Can the BC857B/DG/B3,215 be used in high-frequency applications?

    • The BC857B/DG/B3,215 is not specifically designed for high-frequency applications, but it can be used in moderate frequency circuits with appropriate design considerations.

  9. What are the typical gain characteristics of the BC857B/DG/B3,215?

    • The BC857B/DG/B3,215 transistor typically has a moderate to high current gain (hFE) which makes it suitable for various amplification tasks.

  10. Where can I find detailed datasheets and application notes for the BC857B/DG/B3,215?

    • Detailed datasheets and application notes for the BC857B/DG/B3,215 can be found on the manufacturer's website or through authorized distributors.