The MPSA28 from ON Semiconductor is a high-voltage NPN Darlington transistor that is designed for applications requiring high gain and high current in a small form factor. This bipolar junction transistor (BJT) is capable of amplifying low-power electronic signals to a level that can drive larger loads, making it a versatile component in various electronic circuits.

Key Features

• High Collector-Emitter Voltage: With a V<sub>CEO of 80V, the MPSA28 can handle higher voltage applications, which is beneficial for circuits operating at elevated voltages.
• High Current Gain: The Darlington configuration provides a very high current gain (h<sub>FE), typically around 1000, which allows for significant amplification of the input signal.
• Collector Current: It supports a continuous collector current (I<sub>C) of up to 500mA, making it suitable for driving moderate loads.
• Low Saturation Voltage: The device has a low V<sub>CE(sat), which means it requires less voltage to saturate, leading to increased efficiency.
• TO-92 Package: The transistor comes in a compact TO-92 package, which is widely used and easy to integrate into a variety of circuit designs.

Applications

The MPSA28 is commonly used in applications such as relay drivers, lamp drivers, and display drivers where high gain is necessary. It is also suitable for use in linear amplifiers and switching applications. Its ability to control high-current loads with a low-current input makes it an excellent choice for interfacing with microcontrollers, logic circuits, and other low-power signal sources.

Reliability and Performance

ON Semiconductor is known for its commitment to quality and reliability, and the MPSA28 is no exception. It is designed to meet the rigorous demands of the electronics industry, offering consistent performance and a long operational life. Whether you're designing a new circuit or replacing a component in an existing system, the MPSA28 is a reliable choice that will help ensure your project's success.