Table of Contents
Introduction
The TIP3055 is a high-power NPN transistor commonly used in general-purpose and audio amplifier applications. This transistor is manufactured using epitaxial-base planar technology, making it suitable for both linear and switching operations. It features low collector-emitter saturation voltage, ensuring efficient performance in various electronic circuits. Its robust design supports a maximum collector current of 15A and a power dissipation of up to 90W, making it an excellent choice for handling substantial power loads.

The TIP3055, housed in a TO-247 package, pairs effectively with its complementary PNP counterpart, the TIP2955, enabling balanced push-pull amplifier designs. Its wide range of operating capabilities and high reliability make it a versatile component in industrial, automotive, and consumer electronic applications. Overall, the TIP3055 provides an optimal solution for engineers seeking a durable and efficient power transistor.
Features of TIP3055 Transistor
- Low Collector-Emitter Saturation Voltage:
Ensures high efficiency and minimizes power loss during operation. - High Current Capability:
Supports a maximum collector current (IC) of 15A, making it suitable for high-power applications. - High Power Dissipation:
Handles up to 90W of power dissipation at a case temperature (Tc) of ≤ 25°C. - Wide Voltage Ratings:
- Collector-Emitter Voltage (VCEO): 60V
- Collector-Base Voltage (VCBO): 100V
- Emitter-Base Voltage (VEBO): 7V
- Complementary Pair Design:
Works seamlessly with the PNP TIP2955 transistor for push-pull amplifier configurations. - Robust Thermal Stability:
Operates effectively within a junction temperature range of -65°C to +150°C. - Planar Technology:
Manufactured using epitaxial-base planar technology for reliability and improved performance. - Versatile Applications:
Suitable for general-purpose use, audio amplification, power linear circuits, and switching applications. - Durable Package:
Encased in the TO-247 package, providing excellent heat dissipation and mechanical stability.
Pinout of TIP3055

Pin Number | Pin Name |
---|---|
1 | Base (B) |
2 | Collector (C) |
3 | Emitter (E) |
Applications
- Audio Amplifiers:
- Used in power stages of audio amplifiers for high-quality sound reproduction.
- Switching Circuits:
- Employed in DC-DC converters, motor control circuits, and other switching applications.
- Power Supply Units:
- Common in regulated and unregulated power supplies for driving heavy loads.
- Motor Drivers:
- Utilized in driving DC motors in industrial and automotive systems.
- Inverter Circuits:
- Key component in inverters for converting DC to AC power.
- Voltage Regulators:
- Used in linear voltage regulation for consistent and stable power outputs.
- General-Purpose Applications:
- Suitable for a variety of circuits requiring reliable switching or amplification of high power.