The BC557C-BP, manufactured by Micro Commercial Components (MCC), is a PNP Bipolar Junction Transistor (BJT) designed for general-purpose amplification and switching. It features a maximum collector-emitter voltage of 45 V and can handle a collector current up to 100 mA. The transistor exhibits a transition frequency of 150 MHz and a power dissipation capacity of 625 mW, with a through-hole package type TO-92 that facilitates its incorporation into various circuits. It also presents a low leakage current of 100 nA and a base-emitter saturation voltage of 650 mV at 5 mA and 100 mA, respectively. The current gain, or hFE, is 420 when measured at a test condition of 2 mA collector current and 5 V collector-emitter voltage.