FQA20N40

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FQA20N40 is a N-channel MOSFET that is suitable for switching and amplification applications. It is one of the most popular and widely used types of Field Effect Transistors (FETs).

MOSFETs are four-terminal devices, comprising the Source, Drain, Gate, and Body (substrate). FETs are three terminals devices, comprising the Drain, Source, and Gate. This structure of terminal pins makes them suitable for amplification and switching applications, as it enables them to be operated from very small changes in voltage or current. FQA20N40 is a single MOSFET type, meaning it has only one channel per device.

The functionality of FQA20N40 is mainly determined by the voltage applied between the Source and Gate terminals. The Gate forms a semiconductor dielectric barrier and the Gate voltage controls the current between the Drain and Source terminals. The current is proportional to the Gate voltage, meaning increasing the voltage at the Gate will result in higher current flowing between the Drain and Source terminals. FQA20N40 transistors are capable of amplifying both AC and DC signals.

MOSFETs are used in a wide range of electronic applications due to their superior features, such as their excellent frequency response, low input capacitance, and low on-state resistance. FQA20N40 is widely used in audio power amplifiers, low side switching applications, switching regulators, and low voltage DC motors. It can also be used in logic circuits and power supply circuits.

FQA20N40 transistors can operate at voltages up to 20 volts, making them suitable for low voltage power applications. The maximum source-drain current depends upon the temperature and the device voltage, given a typical value of 60mA. The maximum drain-source on-state resistance is 400 Ohms, with a temperature coefficient of 40mOhms/K. The maximum gate-source voltage is +/- 18V with a threshold voltage of 2V.

In summary, FQA20N40 is an N-channel MOSFET transistor capable of amplifying both AC and DC signals. It is used in audio power amplifiers, low side switching applications, switching regulators, logic circuits, and power supply circuits. With a maximum voltage of 20 volts and a maximum current of 60mA. FQA20N40 has a low on-state resistance of 400 Ohms, with a temperature coefficient of 40mOhms/K and a maximum gate-source voltage of +/- 18V with a threshold voltage of 2V.

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