ON Semiconductor
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BD140G
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BD140G Transistor

Product Overview

Category: Electronic Component
Use: Amplification and Switching
Characteristics: High voltage, low power, PNP type
Package: TO-126
Essence: Silicon epitaxial planar transistor
Packaging/Quantity: Bulk packaging, 50 pieces per pack

Specifications

  • Collector-Base Voltage (VCBO): -80V
  • Collector-Emitter Voltage (VCEO): -80V
  • Emitter-Base Voltage (VEBO): -5V
  • Collector Current (IC): -1.5A
  • Power Dissipation (PD): 12.5W
  • Transition Frequency (ft): 40MHz
  • Operating Temperature Range: -65°C to +150°C

Detailed Pin Configuration

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

Functional Features

  • High voltage capability
  • Low collector saturation voltage
  • Complementary to BD139G

Advantages and Disadvantages

Advantages: - High voltage rating - Low power consumption - Complementary pairing available

Disadvantages: - Moderate transition frequency - Limited current handling capacity

Working Principles

The BD140G is a PNP bipolar junction transistor designed for general-purpose amplifier and switching applications. It operates by controlling the flow of current between the collector and emitter terminals based on the current flowing into the base terminal.

Detailed Application Field Plans

The BD140G transistor finds extensive use in audio amplifiers, voltage regulators, and high-speed switching circuits. Its high voltage capability makes it suitable for applications requiring robust performance in challenging environments.

Detailed and Complete Alternative Models

  1. BD139G - NPN complement to BD140G
  2. 2N3906 - General-purpose PNP transistor
  3. TIP32C - High power PNP transistor

This comprehensive entry provides detailed information about the BD140G transistor, covering its product overview, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan BD140G dalam solusi teknis

  1. What is the BD140G transistor used for?

    • The BD140G is a PNP power transistor commonly used in audio amplifiers, voltage regulators, and other high-power applications.

  2. What are the key specifications of the BD140G transistor?

    • The BD140G has a maximum collector current of 1.5A, a maximum collector-emitter voltage of 80V, and a maximum power dissipation of 12.5W.

  3. How do I connect the BD140G in a typical audio amplifier circuit?

    • In an audio amplifier circuit, the BD140G can be used as a driver or output transistor, connected in a common-emitter configuration with appropriate biasing and coupling components.

  4. Can the BD140G be used in voltage regulator circuits?

    • Yes, the BD140G can be used in voltage regulator circuits to provide a regulated output voltage by controlling the current flow through a load.

  5. What are the typical operating conditions for the BD140G?

    • The BD140G is typically operated at a collector current of 1A, a collector-emitter voltage of 40V, and a base current of 150mA.

  6. Are there any specific heat dissipation requirements for the BD140G?

    • It is important to ensure proper heat sinking for the BD140G to maintain its temperature within safe limits, especially when operating at higher currents or power levels.

  7. Can the BD140G be used in switching applications?

    • While the BD140G is primarily designed for linear amplifier applications, it can also be used in low-frequency switching applications with appropriate drive and protection circuitry.

  8. What are the typical failure modes of the BD140G transistor?

    • Common failure modes include thermal runaway due to inadequate heat dissipation, overcurrent leading to device breakdown, and voltage spikes causing avalanche breakdown.

  9. How do I test the BD140G transistor for proper operation?

    • The BD140G can be tested using a multimeter to measure its hFE (DC current gain), continuity between its terminals, and its ability to switch on and off in response to a base current.

  10. Where can I find detailed application notes and reference designs for the BD140G?

    • Detailed application notes and reference designs for the BD140G can be found in the manufacturer's datasheet, application notes, and technical literature, as well as in electronics engineering textbooks and online resources.