NXP USA Inc.
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BC557C,126
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BC557C,126

Product Overview

Category

The BC557C,126 belongs to the category of PNP transistors.

Use

It is commonly used for amplification and switching purposes in electronic circuits.

Characteristics

  • Low power dissipation
  • High current gain
  • Low noise

Package

The BC557C,126 is typically available in a TO-92 package.

Packaging/Quantity

It is usually supplied in reels or tubes with varying quantities depending on the manufacturer.

Specifications

  • Collector-Emitter Voltage (VCEO): 45V
  • Collector-Base Voltage (VCBO): 50V
  • Emitter-Base Voltage (VEBO): 5V
  • Collector Current (IC): 100mA
  • Power Dissipation (PD): 625mW
  • DC Current Gain (hFE): 110-800

Detailed Pin Configuration

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

Functional Features

The BC557C,126 transistor offers: - High current gain - Low saturation voltage - Low noise figure

Advantages

  • Suitable for low-power applications
  • High current gain allows for small base current drive
  • Low noise makes it suitable for audio applications

Disadvantages

  • Limited maximum collector current compared to other transistors
  • Relatively low power dissipation capability

Working Principles

The BC557C,126 operates as a PNP transistor, where the flow of current is controlled by the application of a small current at the base terminal. This controls the larger current flow between the collector and emitter terminals.

Detailed Application Field Plans

The BC557C,126 is widely used in various applications including: - Audio amplifiers - Signal amplification circuits - Switching circuits - Voltage regulators

Detailed and Complete Alternative Models

Some alternative models to the BC557C,126 include: - BC558 - 2N3906 - 2SA1015

In conclusion, the BC557C,126 PNP transistor is a versatile component with a wide range of applications in electronic circuits. Its high current gain and low noise characteristics make it suitable for use in audio and signal amplification circuits, while its compact TO-92 package allows for easy integration into various designs.

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Énumérez 10 questions et réponses courantes liées à l'application de BC557C,126 dans les solutions techniques

  1. What is the BC557C,126 transistor used for?

    • The BC557C,126 is a PNP bipolar junction transistor commonly used for amplification and switching applications in electronic circuits.

  2. What are the typical operating conditions for the BC557C,126 transistor?

    • The BC557C,126 transistor typically operates at a maximum collector current of 100mA and a maximum collector-emitter voltage of 45V.

  3. How do I identify the pinout of the BC557C,126 transistor?

    • The pinout of the BC557C,126 transistor is typically identified as the emitter (E), base (B), and collector (C) pins.

  4. Can the BC557C,126 transistor be used for audio amplification?

    • Yes, the BC557C,126 transistor 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 BC557C,126 transistor?

    • Common circuit configurations include common emitter amplifiers, switch circuits, and voltage regulators.

  6. What are the key parameters to consider when designing a circuit with the BC557C,126 transistor?

    • Key parameters include the biasing of the transistor, operating voltage and current, load resistance, and frequency response requirements.

  7. Can the BC557C,126 transistor be used in high-frequency applications?

    • The BC557C,126 transistor is not typically recommended for high-frequency applications due to its limited frequency response.

  8. Are there any specific considerations for heat dissipation when using the BC557C,126 transistor?

    • It's important to consider heat dissipation, especially when the transistor is operating close to its maximum ratings, and to use appropriate heatsinking if necessary.

  9. What are some common alternatives to the BC557C,126 transistor?

    • Common alternatives include the BC558, 2N3906, and 2N4403 transistors, which have similar characteristics and can be used in its place.

  10. Where can I find detailed datasheets and application notes for the BC557C,126 transistor?

    • Detailed datasheets and application notes for the BC557C,126 transistor can be found on the websites of semiconductor manufacturers or distributors, such as ON Semiconductor or STMicroelectronics.