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BC857W,115
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BC857W,115

Product Overview

  • Category: Transistor
  • Use: Amplification and switching in electronic circuits
  • Characteristics: Small signal NPN transistor, low power dissipation, high current gain
  • Package: SOT323 (SC-70)
  • Essence: Silicon epitaxial planar NPN transistors
  • Packaging/Quantity: Reel, 3000 units per reel

Specifications

  • Collector-Emitter Voltage (VCEO): 45V
  • Collector-Base Voltage (VCBO): 50V
  • 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

  1. Emitter (E)
  2. Base (B)
  3. Collector (C)

Functional Features

  • High current gain
  • Low noise
  • Complementary PNP type available (BC857)

Advantages

  • Small size
  • Low power dissipation
  • Wide operating temperature range

Disadvantages

  • Limited collector current compared to other transistors
  • Lower transition frequency compared to some alternatives

Working Principles

The BC857W,115 is a small signal NPN transistor that amplifies or switches electronic signals. When a small current flows into the base (B), it controls a larger current flowing between the collector (C) and emitter (E).

Detailed Application Field Plans

  • Audio amplification
  • Signal processing circuits
  • Switching circuits
  • Oscillator circuits

Detailed and Complete Alternative Models

  • BC847W,115
  • BC858W,115
  • 2N3904
  • 2N2222A

This comprehensive entry provides an in-depth understanding of the BC857W,115 transistor, covering its specifications, features, advantages, disadvantages, working principles, application field plans, and alternative models.

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Énumérez 10 questions et réponses courantes liées à l'application de BC857W,115 dans les solutions techniques

  1. What is the BC857W,115 transistor used for?

    • The BC857W,115 is a general-purpose PNP transistor commonly used in amplification and switching applications.

  2. What are the key specifications of the BC857W,115 transistor?

    • The BC857W,115 has a maximum collector current (Ic) of 100mA, a maximum collector-base voltage (Vcbo) of -50V, and a maximum power dissipation (Ptot) of 250mW.

  3. Can the BC857W,115 be used for audio amplification?

    • Yes, the BC857W,115 can be used for small-signal audio amplification due to its low noise and high gain characteristics.

  4. How do I identify the pinout of the BC857W,115 transistor?

    • The pinout of the BC857W,115 is typically identified as the emitter (E), base (B), and collector (C) pins.

  5. What are some common circuit configurations using the BC857W,115?

    • Common circuit configurations include common-emitter amplifiers, switch circuits, and signal processing applications.

  6. What are the temperature considerations for the BC857W,115?

    • The BC857W,115 has a maximum operating temperature of 150°C, so thermal management should be considered in high-temperature environments.

  7. Can the BC857W,115 be used in low-power applications?

    • Yes, the BC857W,115 is suitable for low-power applications due to its moderate power dissipation and low collector current.

  8. Are there any specific precautions when handling the BC857W,115?

    • Standard ESD precautions should be followed when handling the BC857W,115 to prevent damage from electrostatic discharge.

  9. What are the typical gain characteristics of the BC857W,115?

    • The BC857W,115 has a high current gain (hfe) ranging from 110 to 800, making it suitable for amplification purposes.

  10. Can the BC857W,115 be used in high-frequency applications?

    • While the BC857W,115 is not specifically designed for high-frequency applications, it can still be used in moderate frequency ranges with appropriate circuit design.

Feel free to ask if you need further information on any of these questions!