The MJE521 is a robust NPN Bipolar Junction Transistor (BJT) manufactured by CENTRAL SEMICONDUCTOR. As an authorized distributor, Supreme Components International guarantees the authenticity and quality of this component. This transistor is designed for general-purpose amplification and switching applications. It features a collector-emitter voltage (Vceo) of 80V and a continuous collector current (Ic) of 3A. The MJE521's TO-126 package provides excellent thermal characteristics and facilitates easy mounting on PCBs. Its high voltage and current capabilities make it suitable for use in power supplies, motor control circuits, and audio amplifiers. The MJE521 offers reliable performance and is a cost-effective solution for various electronic designs. Consider this transistor for your next project requiring a dependable NPN BJT.