STP21N90K5 - Power MOSFET

Introduction

The STP21N90K5 is a power MOSFET belonging to the category of semiconductor devices. It is widely used in various electronic applications due to its unique characteristics and performance. This entry provides an overview of the STP21N90K5, 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 MOSFET
• Use: The STP21N90K5 is utilized as a switching device in power supply circuits, motor control, and other high-power applications.
• Characteristics: It exhibits low on-state resistance, high switching speed, and excellent thermal performance.
• Package: The STP21N90K5 is typically available in a TO-220 package, providing efficient heat dissipation.
• Essence: Its essence lies in its ability to handle high currents and voltages with minimal conduction losses.
• Packaging/Quantity: It is commonly packaged individually and sold in quantities suitable for industrial and commercial applications.

Specifications

• Voltage Rating: 900V
• Current Rating: 21A
• On-State Resistance (RDS(on)): 0.19Ω
• Gate Threshold Voltage: 4V
• Operating Temperature Range: -55°C to 150°C
• Package Type: TO-220

Detailed Pin Configuration

The STP21N90K5 typically consists of three pins: 1. Gate (G): Used to control the switching operation of the MOSFET. 2. Drain (D): Connected to the load or power supply. 3. Source (S): Connected to the ground or common reference point.

Functional Features

• High Current and Voltage Handling: Capable of handling high currents and voltages, making it suitable for power applications.
• Low On-State Resistance: Minimizes conduction losses and improves efficiency.
• Fast Switching Speed: Enables rapid switching transitions, essential for high-frequency applications.

Advantages and Disadvantages

Advantages

• High current and voltage handling capability
• Low on-state resistance for improved efficiency
• Fast switching speed for high-frequency applications

Disadvantages

• Higher gate threshold voltage compared to some alternative models
• Relatively larger package size may limit use in space-constrained designs

Working Principles

The STP21N90K5 operates based on the principle of field-effect transistors. When a sufficient voltage is applied to the gate terminal, it creates an electric field that allows current to flow between the drain and source terminals. By controlling the gate voltage, the MOSFET can be switched on and off, regulating the flow of current through the device.

Detailed Application Field Plans

The STP21N90K5 finds extensive use in various applications, including: - Power supply circuits - Motor control systems - Inverters and converters - Industrial automation - Renewable energy systems

Detailed and Complete Alternative Models

Some alternative models to the STP21N90K5 include: - IRFP4568PBF - FDPF33N25T - IXFK44N50Q3

These alternatives offer similar performance characteristics and are suitable replacements for the STP21N90K5 in different applications.

In conclusion, the STP21N90K5 power MOSFET is a versatile semiconductor device with exceptional current and voltage handling capabilities, making it an integral component in various power electronics applications.

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