PK-21N30WQ Product Encyclopedia Entry

Introduction

The PK-21N30WQ is a versatile electronic component that belongs to the category of power transistors. This entry provides an overview of its basic information, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Basic Information Overview

• Category: Power Transistor
• Use: Amplification and switching of electrical signals
• Characteristics: High power handling capacity, low resistance, and fast switching speed
• Package: TO-220
• Essence: Efficient power management and signal amplification
• Packaging/Quantity: Typically sold in reels or tubes containing multiple units

Specifications

• Model: PK-21N30WQ
• Maximum Voltage Rating: 300V
• Maximum Current Rating: 21A
• Maximum Power Dissipation: 150W
• Operating Temperature Range: -55°C to 150°C
• Mounting Type: Through Hole
• Package / Case: TO-220

Detailed Pin Configuration

The PK-21N30WQ power transistor typically has three pins: 1. Collector (C): Connects to the positive supply voltage 2. Base (B): Controls the transistor's switching action 3. Emitter (E): Connects to the ground or load

Functional Features

• High current and voltage handling capability
• Fast switching speed for efficient signal amplification and power management
• Low on-state resistance for minimal power loss
• Robust construction for reliable performance in demanding applications

Advantages and Disadvantages

Advantages

• High power handling capacity
• Fast switching speed
• Low resistance for efficient power management

Disadvantages

• Sensitive to overvoltage conditions
• Requires careful heat dissipation measures due to high power dissipation

Working Principles

The PK-21N30WQ operates based on the principles of bipolar junction transistors. When a small current flows into the base terminal, it controls a much larger current between the collector and emitter terminals, allowing for signal amplification and power switching.

Detailed Application Field Plans

The PK-21N30WQ power transistor finds extensive use in various applications, including: - Audio amplifiers - Power supplies - Motor control circuits - LED lighting systems - Switching regulators

Detailed and Complete Alternative Models

• PK-21N30W: Similar specifications with a different package type (TO-247)
• PK-20N30WQ: Lower current rating but compatible with similar applications
• PK-22N30WQ: Higher current rating for more demanding power management tasks

In conclusion, the PK-21N30WQ power transistor offers high-performance characteristics suitable for a wide range of power management and signal amplification applications.

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