The 2N4392 is a general purpose NPN transistor made by Central Semiconductor. This device is designed for general purpose amplification and switching applications and is suitable for use in switching regulators, logic circuits, relay and lamp drivers, DC-DC converters, level shifters, and high voltage power supplies. It has a DC current gain of =40 typically at collector current of 500µA, and can handle collector currents up to 0.5A and base current up to 80mA. The 2N4392 has a maximum operating temperature of 175 degrees Celsius, a collector-emitter breakdown voltage of 30V, and a total power dissipation of 1W.