BC407B NPN silicon transistor

The BC407B is a vintage NPN silicon transistor designed for high-frequency applications, typically housed in a TO-106 package. It operates with a collector-emitter voltage of up to 45V and supports collector currents up to 100 mA. With a transition frequency around 150 MHz, it is suitable for RF and general-purpose amplification tasks. The transistor’s power dissipation rating is approximately 250 mW, and the "B" suffix indicates a specific gain (hFE) range, making it a reliable choice for precision electronic circuits requiring stable performance.