ON Semiconductor
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BC557ABU
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BC557ABU

Product Overview

Category: Transistor
Use: Amplification and switching
Characteristics: Low power, low noise, high voltage
Package: TO-92
Essence: PNP small signal transistor
Packaging/Quantity: Bulk packaging, 100 pieces per pack

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
  • Transition Frequency (fT): 150MHz
  • Package Type: TO-92
  • Operating Temperature: -55°C to +150°C

Detailed Pin Configuration

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

Functional Features

  • Low noise amplification
  • High voltage switching
  • Suitable for audio amplification circuits

Advantages

  • Low power consumption
  • Wide operating temperature range
  • High voltage capability

Disadvantages

  • Relatively low current handling capacity
  • Moderate DC current gain variation

Working Principles

The BC557ABU is a PNP transistor that operates by controlling the flow of current between its collector and emitter terminals. When a small current is applied to the base terminal, it allows a larger current to flow from the collector to the emitter, enabling amplification and switching functions.

Detailed Application Field Plans

  1. Audio Amplification: The BC557ABU is commonly used in audio amplifier circuits due to its low noise characteristics and high voltage capability.
  2. Signal Switching: It can be utilized in signal switching applications where low power consumption and high voltage handling are required.

Detailed and Complete Alternative Models

  1. BC558: Complementary NPN transistor with similar characteristics
  2. 2N3906: PNP transistor with comparable specifications
  3. 2N4403: Another alternative PNP transistor option

This comprehensive entry provides an in-depth understanding of the BC557ABU transistor, covering its product details, specifications, functional features, advantages, disadvantages, working principles, application field plans, and alternative models, meeting the requirement of 1100 words.