The ON Semiconductor MPS6521 is a versatile and high-performance bipolar junction transistor (BJT) that is designed for general-purpose amplifier and switching applications. This NPN transistor is a reliable component for a wide range of electronic circuits, offering a good balance between speed and power handling capabilities.

Key Features:

• High Current Gain Bandwidth Product: The MPS6521 provides a high fT (transition frequency) which makes it suitable for amplification of high-frequency signals.
• Low Saturation Voltage: It has a low V<sub>CE(sat) which ensures efficient operation at low voltages, minimizing power loss and heat generation.
• High Power Dissipation: With its ability to dissipate higher power, the MPS6521 can handle more significant loads without compromising performance.
• TO-92 Package: The transistor comes in a TO-92 package, which is widely used and easy to work with in prototyping and PCB design.

Electrical Characteristics:

At 25°C ambient temperature, the MPS6521 offers a collector-emitter voltage (V<sub>CEO) of 25V, collector-base voltage (V<sub>CBO) of 40V, and emitter-base voltage (V<sub>EBO) of 6V. The collector current (I<sub>C) can go up to 500 mA, making it suitable for driving moderate loads. The device also has a total power dissipation of 625 mW, providing a good margin for various applications.

Applications:

The MPS6521 is ideal for an array of applications, including but not limited to:

• Audio amplifiers and pre-amplifiers
• Signal processing
• Switching and power regulation circuits
• Driver stages in hi-fi systems and TVs

With its reliable performance and ON Semiconductor's commitment to quality, the MPS6521 is a go-to transistor for hobbyists, educators, and professional engineers alike. Whether you're working on a simple DIY project or a complex electronic system, the MPS6521 offers the functionality and performance needed to meet your circuit design requirements.