BD682 Transistor: Encyclopedia Entry

Introduction

The BD682 transistor is a crucial component in electronic circuits, belonging to the category of power transistors. This entry provides an overview of the BD682 transistor, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Power Transistor
• Use: Amplification and switching applications
• Characteristics: High current and voltage capability, low saturation voltage
• Package: TO-126
• Essence: Silicon NPN power transistor
• Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

• Collector-Emitter Voltage (VCEO): 100V
• Collector Current (IC): 4A
• Power Dissipation (Ptot): 36W
• DC Current Gain (hFE): 25 - 160
• Transition Frequency (fT): 2 MHz

Detailed Pin Configuration

The BD682 transistor has a standard TO-126 package with three pins: 1. Base (B): Input terminal for controlling the transistor's operation. 2. Collector (C): Terminal connected to the positive supply voltage. 3. Emitter (E): Output terminal for the amplified or switched signal.

Functional Features

• High current and voltage capability make it suitable for power applications.
• Low saturation voltage reduces power dissipation and improves efficiency.

Advantages and Disadvantages

Advantages

• High current and voltage ratings enable use in power circuits.
• Low saturation voltage enhances efficiency.

Disadvantages

• Relatively limited transition frequency compared to other transistors.
• Moderate DC current gain may require additional circuitry for specific applications.

Working Principles

The BD682 operates based on the principles of NPN bipolar junction transistors. When a small current flows into the base terminal, it controls a larger current between the collector and emitter terminals, allowing amplification or switching of signals.

Detailed Application Field Plans

The BD682 transistor finds extensive use in various applications, including: - Audio amplifiers - Power supplies - Motor control circuits - Lighting systems

Detailed and Complete Alternative Models

Several alternative models to the BD682 transistor include: - TIP31C - 2N3055 - MJ15003

In conclusion, the BD682 transistor serves as a vital component in power circuits, offering high current and voltage capabilities along with low saturation voltage. Its application spans across diverse fields, making it a versatile choice for amplification and switching needs.

Word Count: 330