ONSEMI BC548CTA NPN Bipolar Transistor, 30V, TO92, 100mA

The ONSEMI BC548CTA is a versatile NPN epitaxial silicon bipolar transistor engineered for a wide range of electronic applications. Its reliable design makes it an excellent choice for both general-purpose amplification and low-power switching circuits, offering stable performance in a compact, through-hole package.

With a maximum collector-emitter voltage (V_CE) of 30V and a continuous collector current rating of 100mA, this component is suitable for signal processing, audio pre-amplifiers, and driver stages. The device features a high DC current gain (h_FE) with a minimum of 420, ensuring good sensitivity and efficient signal amplification. A transition frequency of 300MHz supports its use in higher frequency applications where signal integrity is crucial.

Housed in the ubiquitous TO-92 package with three pins, it is designed for straightforward through-hole mounting on printed circuit boards (PCBs), facilitating easy prototyping and robust production assembly. The transistor has a power dissipation rating of 500mW and can operate at temperatures up to 150°C, providing a good margin for thermal management in typical operating environments.

This transistor is the direct complement to the BC558 PNP type, allowing for the design of complementary push-pull amplifier stages, a common requirement in audio output circuits and precision analogue designs. Its combination of electrical characteristics, proven reliability, and the trusted ONSEMI brand makes it a fundamental component for hobbyists, educators, and professional engineers alike.