BD746B-S Product Overview

Introduction

The BD746B-S is a versatile electronic component that belongs to the category of power transistors. This product is commonly used in various electronic applications due to its unique characteristics and functional features.

Basic Information Overview

• Category: Power Transistor
• Use: Amplification and Switching in Electronic Circuits
• Characteristics: High Voltage and Current Handling Capacity, Low Saturation Voltage
• Package: TO-220AB
• Essence: Efficient Power Management
• Packaging/Quantity: Typically Sold in Reels or Trays

Specifications

• Maximum Collector-Emitter Voltage (Vce): 100V
• Maximum Collector Current (Ic): 10A
• DC Current Gain (hFE): 25 - 250
• Power Dissipation (Pd): 40W
• Transition Frequency (ft): 30MHz

Detailed Pin Configuration

The BD746B-S power transistor typically features three pins: 1. Collector (C): Connects to the positive supply voltage. 2. Base (B): Input terminal for controlling the transistor's operation. 3. Emitter (E): Connected to the ground or common reference point.

Functional Features

• High Voltage and Current Handling: Capable of handling high power loads in electronic circuits.
• Low Saturation Voltage: Ensures minimal power loss during switching operations.
• Fast Switching Speed: Enables rapid on/off transitions for efficient circuit operation.

Advantages and Disadvantages

Advantages

• High power handling capability
• Low saturation voltage reduces power dissipation
• Fast switching speed for efficient performance

Disadvantages

• Higher heat dissipation due to power handling capacity
• Sensitivity to overvoltage conditions

Working Principles

The BD746B-S operates based on the principles of bipolar junction transistors. When a small current is applied to the base terminal, it controls the larger current flow between the collector and emitter terminals. This enables amplification and switching functions in electronic circuits.

Detailed Application Field Plans

The BD746B-S finds extensive use in the following application fields: - Power Amplifiers: Utilized for amplifying audio and RF signals in electronic systems. - Switching Circuits: Employed for controlling the on/off states of various components in electronic devices. - Voltage Regulators: Integrated into power supply circuits for regulating output voltages.

Detailed and Complete Alternative Models

1. BD745C: Similar power transistor with lower voltage and current ratings.
2. BD747A: Higher power handling variant with increased voltage and current capabilities.
3. BD746B-R: RoHS-compliant version of the BD746B-S with similar specifications.

In conclusion, the BD746B-S power transistor offers exceptional performance in power management applications, making it a valuable component in various electronic systems.

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