TIP3055 NPN Power Transistor Pinout Datasheet

Introduction

The TIP3055 is a high-power NPN bipolar junction transistor (BJT) used in audio amplifier circuits, power regulators, inverters, and motor drivers. It belongs to the silicon epitaxial planar transistor family and is designed to handle high currents and voltages efficiently. The TO-247 package version of the TIP3055 provides improved thermal performance, lower resistance, and enhanced mechanical durability compared to traditional TO-218 or TO-3P versions.

With a collector-emitter voltage (Vce) rating of 60V and a collector current of up to 15A, the TIP3055 is capable of driving heavy loads such as DC motors, transformers, and high-power speakers. Its power dissipation capability of around 90W makes it a reliable choice in applications that require efficient heat handling and sustained high current operation.

TIP3055 NPN Power Transistor

The TIP3055 in TO-247 package is highly popular in Class AB audio power amplifiers, where it is often paired with its complementary PNP transistor, the TIP2955. Together, they provide excellent push-pull performance, low distortion, and high efficiency. This combination makes the TIP3055 an industry standard choice for DIY audio projects, industrial motor drivers, and regulated power supply designs.

TIP3055 Pinout

TIP3055 Transistor Key Features

• High current handling capacity (up to 15A).
• Reliable performance in linear and switching applications.
• Strong mechanical durability with TO-247 package.
• Efficient thermal dissipation for continuous operation.
• Cost-effective and widely available in the electronics market.

Specifications/Characteristics of TIP3055 NPN Transistor

• Transistor Type: NPN
• Collector-Emitter Voltage (Vce): 60V
• Collector-Base Voltage (Vcb): 100V
• Emitter-Base Voltage (Veb): 7V
• Collector Current (Ic): 15A maximum
• DC Current Gain (hFE): 20 – 70
• Power Dissipation (Ptot): 90W (with proper heatsink)
• Package Type: TO-247

TIP3055 Pin Configuration

More Circuit Layouts

Key Applications of TIP3055 NPN Transistor

• Audio power amplifiers (Class AB and Class B stages)
• DC motor drivers and controllers
• Uninterruptible power supplies (UPS) and inverters
• Regulated DC power supplies
• Switching circuits for industrial loads
• Battery charger systems

PNP Complimentary Transistor

TIP2955 (Power Transistor, TO-247) is the PNP complementary transistor of TIP3055.

Equivalent Transistors of TIP3055

• 2N3055 (TO-3 package NPN transistor)
• BD249C (NPN power transistor)
• TIP35C (higher voltage NPN transistor)
• MJ15015 (NPN high-power transistor)
• 2N3773 (NPN high current transistor)

(Pin configuration of some transistors mentioned above may different from TIP3055).

Datasheet of TIP3055 NPN Transistor

Click the following Button below to download the datasheet of TIP3055 Transistor :

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