BC440-6 Transistor NPN 2A 40V

High-Current BC440-6 Transistor for Power and Audio Drivers

The BC440-6 Transistor functions as a high-performance NPN Silicon Planar Epitaxial BJT specifically designed for medium-power applications. It belongs to the rugged BC440 family, known for its ability to handle significant current in a compact metal-can package. The “-6” suffix specifically denotes a selected gain group, providing engineers with a predictable amplification factor for precision circuit design.

Robust 2-Ampere Performance and Thermal Reliability

Specifically, the BC440-6 manages a continuous collector current ($I_C$) of up to 2A, with a peak capacity of 3A. This high current rating makes the device an excellent choice for driving heavy-duty relays, DC motors, and high-power solenoid valves. Furthermore, the transistor handles a collector-emitter voltage ($V_{CEO}$) of up to 40V. Consequently, the unit provides a wide operating margin for standard 12V and 24V DC systems. Moreover, its TO-39 metal-can package ensures superior heat dissipation and electromagnetic shielding compared to plastic alternatives. Transitioning to the BC440-6 ensures your power management stages remain thermally stable and electromagnetically quiet.

Selected Gain for Audio and Control Circuits

Additionally, the BC440-6 offers a specific DC current gain ($h_{FE}$) range, typically between 115 and 250 at 500mA. This selected gain group allows for more accurate biasing in audio driver stages and linear power supplies. Specifically, the high gain at moderate current levels reduces the load on preceding low-power signal stages. Furthermore, because it features NPN polarity, it integrates seamlessly into standard ground-referenced switching designs.

Moreover, technicians frequently install the BC440-6 in professional audio amplifiers as a driver for larger output transistors. Specifically, its transition frequency ($f_T$) of 50 MHz ensures high-speed switching and clean frequency response in the audible range. Furthermore, the component is the NPN complement to the BC460 PNP transistor. Using these together allows for the construction of balanced, high-efficiency push-pull amplifier stages. Additionally, the rugged hermetic seal of the metal case protects the semiconductor from humidity and contaminants, ensuring a long operational life in industrial environments.

Verified Data Sheet (Technical Specifications)