BD646-S Product Overview

Product Category: Semiconductor

Use: BD646-S is a power transistor designed for use in various electronic circuits and applications.

Characteristics: The BD646-S is known for its high power dissipation capability, low saturation voltage, and high current gain. It is commonly used in audio amplifiers, power supplies, and industrial control systems.

Package: The BD646-S comes in a TO-220 package, which provides efficient heat dissipation and easy mounting on circuit boards.

Essence: This product is essential for power management and amplification in electronic devices and systems.

Packaging/Quantity: The BD646-S is typically packaged in reels or tubes and is available in various quantities to meet different production needs.

Specifications

• Collector-Emitter Voltage (VCEO): 80V
• Collector-Base Voltage (VCBO): 100V
• Emitter-Base Voltage (VEBO): 5V
• Collector Current (IC): 4A
• Power Dissipation (PD): 40W
• Transition Frequency (FT): 3MHz
• Operating Temperature: -65°C to 150°C

Detailed Pin Configuration

The BD646-S has a standard TO-220 pin configuration with the following pinout:

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

Functional Features

• High power dissipation capability
• Low saturation voltage
• High current gain
• Fast switching speed

Advantages and Disadvantages

Advantages: - Suitable for high-power applications - Efficient heat dissipation - Reliable performance in audio amplifiers and power supplies

Disadvantages: - May require additional heat sinking in high-power applications - Sensitive to overvoltage conditions

Working Principles

The BD646-S operates based on the principles of bipolar junction transistors, where the flow of current is controlled by the application of a small signal at the base terminal, resulting in amplified output current at the collector terminal.

Detailed Application Field Plans

The BD646-S is widely used in the following applications: - Audio amplifiers - Power supplies - Industrial control systems - Motor control circuits - Voltage regulators

Detailed and Complete Alternative Models

Some alternative models to the BD646-S include: - TIP31C - 2N3055 - MJ15003

These alternatives offer similar power handling capabilities and can be used as substitutes depending on specific design requirements.

This comprehensive overview provides detailed insights into the BD646-S, covering its category, characteristics, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models, making it an essential reference for engineers and enthusiasts in the semiconductor industry.