BC558 PNP Transistor

The BC558 is a PNP epitaxial silicon transistor manufactured in a standard TO-92 package. It is widely used in general-purpose amplification and switching circuits due to its reliability and cost-effectiveness. This transistor features a maximum collector-emitter voltage of -30V, a continuous collector current of 100mA, and a power dissipation of 300mW to 500mW depending on the manufacturer. It is commonly found in audio pre-amplifiers, signal processing, and low-current switching applications. The BC558 is a complementary pair to the NPN BC548 transistor. Choose this component for your projects requiring a dependable, widely available PNP transistor that meets standard electronic design requirements.