AFT21S140W02GSR3

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The AFT21S140W02GSR3 is a RF (radio frequency) MOSFET (metal-oxide-semiconductor field-effect transistor) from Alpha and Omega Semiconductor (AOS). It is a Dual N-channel, part of AOS’s AlphaMOS Power Transistor product family.

Application Field

The AFT21S140W02GSR3 can be used in a variety of applications, including wireless communication systems, industrial, medical, and consumer electronics. Because of its low on-resistance, it is suited for efficient, low-power switching applications.

In wireless communication systems, it is suitable for implementation in base station power amplifiers and other RF, microwave and millimeter-wave applications such as frequency converters, mixers, amplifiers, low noise amplifiers and RF switches. It is also suitable in consumer and industrial applications, such as power converters, Class-D audio amplifiers, motor drivers and solenoid/actuator drivers. Furthermore, it is applicable in medical applications, such as MRI and X-ray imaging.

Working Principle

The AFT21S140W02GSR3 functions using the same principle as other MOSFETs. It uses a gate to control the flow of current from the source to the drain. The gate is insulated from the other terminals. When a voltage is applied to the gate, it creates an electric field that modulates the conductivity between the source and the drain. This allows for current to be switched on and off easily and quickly, which makes the MOSFET suitable for low-power switching applications.

At low gate voltages, the AFT21S140W02GSR3 features low on-resistance and voltage drop. This helps to reduce power losses in applications when the MOSFET is on. Furthermore, its low gate-to-drain and gate-to-source capacitance results in better switching speed, higher efficiency and improved device integration.

The AFT21S140W02GSR3 also features a high-temperature rating of up to 175°C. This allows it to be used in applications that involve high temperatures and in harsh environments.

Conclusion

The AFT21S140W02GSR3 is an RF MOSFET from Alpha and Omega Semiconductor that is suitable for use in various applications, including wireless communication systems, industrial, medical and consumer electronics. Its low on-resistance, low gate capacitance and high-temperature rating make it an ideal choice for low-power switching applications.

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