The BC556A is a versatile PNP small signal transistor from DIPTRONICS. As an authorized distributor, Supreme Components International offers this transistor in the industry-standard TO-92 package. This bipolar junction transistor (BJT) is designed for general-purpose amplification and switching applications. Its key features include low noise, high gain, and excellent linearity. The BC556A is commonly used in audio amplifiers, signal processing circuits, and switching circuits. Its compact size and ease of use make it a favorite among hobbyists and professional engineers alike. Supreme Components International guarantees the authenticity and quality of this DIPTRONICS transistor.