2N4857JAN02

Series:	--
Packaging:	Tube
Part Status:	Obsolete
FET Type:	--
Input Capacitance (Ciss) (Max) @ Vds:	--
Operating Temperature:	--
Mounting Type:	Through Hole
Package / Case:	TO-206AA, TO-18-3 Metal Can
Supplier Device Package:	TO-206AA (TO-18)

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Introduction

The 2N4857JAN02 is a JFET, or Junction Gate Field-Effect Transistor, type of transistor, designed to control currents in circuits. The specific objectives of this part of the transistor family are to provide consistent performance over long periods of time, and to provide results that are within a specified set of parameters. This transistor works according to the principal of a gated field with the gate controlling the current flow.

Structure and Components

The 2N4857JAN02 is made up of an N-Channel Junction Gate Field-Effect Transistor (JFET) that is housed in a hermetically sealed ceramic package. The package also includes a metal gate, cathode, and source. It is typically used in industrial and commercial applications where stability and reliability are paramount.

Working Principle

The 2N4857JAN02 operates on the principle of a gated field, where electricity flows from the Gate to either the Drain or Source. The Gate is the control point in this transistor, and when a voltage is applied it can control the current flow that goes from the Source to the Drain. When a positive voltage is applied to the Gate, it will open the channel and allow the current to flow, when a negative voltage is applied the channel is closed and no current flowing.

Application Fields

The 2N4857JAN02 is suitable for a variety of industrial and commercial applications such as amplifying signals, switching circuits and sensing circuits. It is also frequently used in higher frequency circuit designs. It is important to note that this particular JFET should not be used in high temperature environments.

Benefits and Features

Some of the benefits of using the 2N4857JAN02 transistor include its ability to provide reliable and consistent performance over long periods of time. It also has excellent switching efficiency, and high input and output impedance, making it suitable for use in a variety of circuits. Additionally, the metal gate of the JFET reduces conducting for greater power consumption efficiency.

Conclusion

The 2N4857JAN02 is an N-Channel JFET transistor, designed to provide consistent performance in a variety of industrial and commercial applications. It operates on the principle of a gated field, and the gate can control the current flow. It offers many benefits and features, such as high input and output impedance, consistent performance, and metal gate design for power efficiency. This particular transistor should not be used in high temperature environments.

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