2N8541

The 2N8541 is a silicon NPN epitaxial planar bipolar transistor designed for high-frequency amplifier and switching applications. It was manufactured by Fairchild Semiconductor and other companies. This device typically features a high transition frequency (fT) and low noise figure, making it suitable for use in radio frequency circuits, such as those found in early communication equipment and test instruments. The 2N8541 is housed in a TO-46 package, which is a small metal can with three leads. Its electrical characteristics include specific voltage and current ratings, as well as parameters like beta (current gain) and saturation voltage. These transistors were commonly used in the 1960s and 1970s before the widespread adoption of more advanced semiconductor technologies. Due to its age, the 2N8541 is now considered a vintage component and is primarily of interest to hobbyists, collectors, or for repair of older electronic equipment. While not commonly found in new designs, its historical significance lies in its contribution to the development of early high-frequency electronics.