2N3055 NPN Power Transistor TO-3 Metal Can – 15A 60V High Power Amplifier & Regulator in Pakistan

Overview 

The 2N3055 is a silicon Epitaxial-Base Planar NPN transistor mounted in a Jedec TO-3 metal case. It is intended for a wide variety of high-power applications. Its ability to handle up to 15 Amperes of current and dissipate up to 115 Watts makes it a staple for bench power supplies, heavy-duty DC motor speed controllers, and classic high-fidelity audio power amplifiers. If you need a transistor that can survive high-stress environments where modern plastic components might fail, the 2N3055 is your go-to.

Key Features 

• Rugged TO-3 Metal Case: Provides superior heat dissipation compared to plastic packages.

• High Current Capability: Handles up to 15A continuous collector current (I_C).

• Linear Performance: Excellent gain linearity, making it ideal for high-quality audio amplification.

• Venerable Reliability: A time-tested design used in industrial and hobbyist projects worldwide.

• Easy Mounting: The metal case acts as the Collector, allowing for direct mounting to large heatsinks.

Technical Specifications 

Feature	Specification
Transistor Type	NPN
Package	TO-3 (Metal Can)
Collector-Emitter Voltage (V_{CEO})	60V
Collector-Base Voltage (V_{CBO})	100V
Continuous Collector Current (I_C)	15A
Total Power Dissipation (P_D)	115W
DC Current Gain (h_{FE})	20 to 70
Operating Temperature	-65°C to +200°C

Popular Use Cases 

• Variable DC Power Supplies: The “pass” transistor of choice for LM317 or 7805 current boosters.

• Audio Power Amps: Famous for the “warm” sound in vintage 100W amplifiers.

• Solenoid & Relay Drivers: Handling heavy inductive loads with ease.

• Inverters: Simple DIY DC-to-AC conversion circuits.