2SK4037(TE12L,Q) Discrete Semiconductor Products

Series:	--
Packaging:	Cut Tape (CT)
Part Status:	Discontinued at Digi-Key
Transistor Type:	N-Channel
Frequency:	470MHz
Gain:	11.5dB
Voltage - Test:	6V
Current Rating:	3A
Noise Figure:	--
Current - Test:	250mA
Power - Output:	36.5dBmW
Voltage - Rated:	12V
Package / Case:	SC-70, SOT-323
Supplier Device Package:	SC-70

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The 2SK4037 (TE12L, Q) is a type of Field Effect Transistor (FET) specifically referred to as an RF MOSFET. It is a common component used in many RF circuits, particularly in radio frequency amplifiers. Due to its ability to provide high gain and low noise, it is an ideal choice for these kinds of applications.The basics of MOSFETs (Meta-Oxide-Semiconductor Field Effect Transistors) are relatively simple. The transistor itself consists of two junctions, the source and the drain, with a gate that is controlled by a capacitance and can be used to switch the current on and off. In the 2SK4037, the gate is DC-coupled, meaning that it has a voltage level that is dependent on the base voltage, allowing the transistor to switch between conducting and non-conducting states.In RF circuits, the transistor is typically used as a buffer, amplifying whatever signal is being sent to it. The gain of the amplifier can be altered by changing the bias voltage on the gate or by varying the capacitance of the gate. The low noise figure of the device also makes it well-suited for these applications.The 2SK4037 is a fairly common choice for RF applications, due to its low cost and wide availability. The device is available in a variety of packages, ranging from the TO-72 package for through-hole mounting, to the small SOT-223 for surface mount applications.The 2SK4037 has a few advantages over other RF MOSFETs, such as its fast switching speed, high gain, and low noise. Its low input capacitance also helps to reduce distortion and increase the dynamic range of the amplifier. In addition, the device has a good temperature stability and can operate within a wide-range of temperatures.The 2SK4037 is a great choice for many RF applications, thanks to its high gain, low noise, and fast switching speed. It is widely available and very easy to use, making it an ideal choice in many different projects. For those looking for a reliable and affordable FET to use in their RF circuits, the 2SK4037 is a great option.

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