2N3439

The 2N3439 is a high-performance NPN transistor engineered for reliable signal amplification and switching in RF and analog circuits. It provides consistent electrical characteristics suitable for general-purpose and radio-frequency applications where stable gain and thermal behavior are required. Maximum collector current: 0.8 Amps Collector-emitter voltage rating: 30 Volts Transition frequency (fT): 100 MHz Power dissipation: 1.5 Watts Package: TO-66 metal can for enhanced durability and heat dissipation Compared with other transistors in its class, the 2N3439 offers a balanced combination of voltage rating, current handling, and frequency response. Its TO-66 metal can package contributes to improved thermal management and mechanical stability, supporting reliable long-term operation in demanding electronic environments. The device is well suited to RF circuits where consistent amplification and minimal distortion are important, and its performance characteristics make it a practical choice for engineers seeking a robust NPN transistor for medium-frequency designs.