The MJD200T4G with Bipolar (BJT) Transistor NPN 25 V 5 A 65MHz 1.4 W Surface Mount DPAK is a discrete semiconductor device manufactured by ON Semiconductor. The transistor is a Negative-Positive-Negative (NPN) type and includes a collector, base, and emitter. It is primarily used for higher switching and linear amplification applications. It is able to provide a voltage gain of up to 65MHz with a current rating of 5 amps. The power dissipation of this device is 1.4 watts, and it is housed in an industry standard DPAK surface-mount package. The voltage rating of the MJD200T4G is up to 25 volts, and it has a low collector-emitter saturation voltage for better efficiency. It is suitable for a wide range of applications such as power supplies, motor control, and power switching.