The 2SC1815-BL-AP is a bipolar junction NPN transistor manufactured by Micro Commercial Components (MCC). It is designed for a maximum collector-emitter voltage of 50 V and a collector current of up to 150 mA. This transistor operates efficiently at frequencies up to 80 MHz and can dissipate power up to 400 mW, making it suitable for moderate power applications. It features a current gain of 350 at a test condition of 2 mA and 6V, with a low collector cutoff current of 100 nA. With its TO-92 through-hole package, it is convenient for use in various electronic applications that require reliable switching and amplification.