The 2N2221A, manufactured by CENTRAL SEMICONDUCTOR, is a highly reliable NPN bipolar junction transistor (BJT) commonly used in general-purpose amplifier and switching circuits. Supreme Components International is an authorised distributor of CENTRAL SEMICONDUCTOR components, ensuring you receive genuine and high-quality products. This transistor is designed for through-hole mounting and offers excellent performance characteristics for a wide range of applications. Its robust construction and stable electrical properties make it a popular choice for both hobbyists and professional engineers. The 2N2221A is ideal for use in audio amplifiers, signal processing circuits, and switching applications where a reliable and consistent NPN transistor is required. Consider the 2N2221A for your next project requiring a dependable BJT.