The BD682 is a 4-pin power transistor from Components Industries Limited (CDIL) that is typically used in switching and linear applications. It is a NPN silicon epitaxial planar power transistor, capable of delivering up to 500 mA of collector current. The transistor has a wide range of features, such as high voltage, excellent thermal stability, low collector-emitter saturation voltage and integrated on-chip freewheeling diodes. This versatile transistor can be used in a variety of general-purpose applications, such as switching, amplifiers, oscillators, low-power audio and line drivers.