The BC846S is a PNP Small Signal Transistor manufactured by Diotec. This type of transistor is typically used for low power and low voltage applications, such as switching, amplifier stages, and driver circuits. It operates over a wide range of temperatures, from -65 to +150 degrees Celsius, and features a maximum collector current of 500 mA and a voltage rating of 40 V. It is a leaded part, meaning it must be installed on a circuit board to operate properly.