2N3055

The 2N3055 is a silicon NPN power transistor manufactured by various companies. It is known for its robust construction and ability to handle significant power dissipation, making it a popular choice for a wide range of electronic applications. Introduced in the 1960s, it quickly became a workhorse in audio amplifiers, power supplies, and switching circuits. Its metal can package, typically TO-3, provides excellent thermal conductivity, allowing it to dissipate heat effectively. The 2N3055 has a maximum collector current rating of 15 amperes and a collector-emitter voltage rating of 60 volts. These specifications, combined with its relatively low cost, contributed to its widespread adoption in both hobbyist and professional electronics. While newer transistors with improved performance characteristics are now available, the 2N3055 remains a relevant component for certain applications and a subject of interest for electronics historians and enthusiasts. Its reliability and straightforward design have ensured its continued presence in many older designs and its use in educational contexts for demonstrating fundamental power transistor principles.