BD438 is a plastic package, axial-leaded, low-power, high-gain, 12V, 6A, moderate frequency, Darlington-transistor (PNP type) manufactured by CDIL (Continental Device India Limited). The transistor has a maximum hFE (Gain) of 5000, high current carrying capacity, and is ideal for applications requiring efficient current amplification and switching. It is suitable for use in a wide range of applications, including amplifier circuits, line drivers, and current power switched systems.