TIP147

The TIP147 is a high-performance, high-voltage, NPN power transistor manufactured by STMicroelectronics. It is designed for a variety of applications, including power switching and amplification in industrial and consumer electronics.

Key Features:

1. Type: NPN Bipolar Junction Transistor (BJT)
2. Package: Typically available in a TO-220 package, which allows for efficient heat dissipation and easy mounting on heatsinks.
3. Voltage Rating: The TIP147 can handle a maximum collector-emitter voltage (Vce) of up to 120V, making it suitable for high-voltage applications.
4. Current Rating: It has a maximum continuous collector current (Ic) rating of around 8A, allowing it to drive significant loads.
5. Power Dissipation: The transistor can dissipate power up to 65W, depending on the thermal management and ambient conditions.
6. Gain: The TIP147 features a high current gain (hFE), typically ranging from 20 to 150, which enhances its efficiency in amplification applications.
7. Switching Speed: While not as fast as modern MOSFETs, the TIP147 offers reasonable switching speeds for many applications, making it suitable for use in linear and switching power supplies.

Applications:

• Power Amplifiers: Used in audio and RF applications where high power and linearity are required.
• Switching Regulators: Employed in power supply circuits to switch loads on and off efficiently.
• Motor Control: Suitable for driving DC motors in various applications, including robotics and industrial machinery.
• Relay Drivers: Can be used to control relays in automation systems.

Electrical Characteristics:

• Collector-Emitter Breakdown Voltage (V(BR)CEO): Typically around 120V.
• Emitter-Base Breakdown Voltage (V(BR)EBO): Generally around 5V.
• Thermal Resistance: The thermal resistance from junction to case is low, allowing for effective heat management.

Thermal and Mechanical Considerations:

• The TO-220 package design allows for easy attachment to heatsinks, which is crucial for maintaining operational stability under high load conditions.
• The transistor's construction includes a silicon die that is encapsulated in a durable plastic housing, providing protection against environmental factors.

Conclusion:

The TIP147 from STMicroelectronics is a robust and versatile power transistor that is well-suited for a wide range of applications requiring high voltage and current handling capabilities. Its combination of high power dissipation, good thermal performance, and reliable operation makes it a popular choice among engineers and designers in the electronics industry.