The 2N7002K is a MOSFET (Metal-Oxide-Semiconductor Field-Effect transistor ) component manufactured by ON Semiconductor. The 2N7002K is a N-channel MOSFET designed for use in various applications such as switching, amplification, and signal processing.
Pin Function and Specifications
The 2N7002K has a TO-92 package. The TO-92 is a three-lead transistor package, and each pin corresponds to a specific function.
Pin Function Table: Pin Number Pin Name Pin Function Description 1 Gate (G) The Gate controls the current flow between the Drain and Source. It is used to switch the MOSFET on and off. Applying a voltage above the threshold voltage (V_GS(th)) allows current to flow from the Drain to the Source. 2 Drain (D) The Drain is the terminal through which the current flows out of the MOSFET when it is turned on. In an N-channel MOSFET, current flows from the Drain to the Source when the device is conducting. 3 Source (S) The Source is the terminal from which the current enters the MOSFET. It is usually connected to ground or a low potential in a typical N-channel MOSFET configuration.Package and Pin Configuration
The 2N7002K is packaged in the TO-92 package, which is a small, three-pin package commonly used for low-power transistors and MOSFETs .
Package Type: TO-92 Number of Pins: 3 Pinout: Pin 1: Gate (G) Pin 2: Drain (D) Pin 3: Source (S)Circuit Principle Instructions
The 2N7002K is an N-channel MOSFET, and its typical application involves switching current on and off based on the control voltage applied to the Gate (G). When a positive voltage is applied to the Gate relative to the Source, the MOSFET turns on, allowing current to flow from the Drain (D) to the Source (S). When the Gate voltage is removed (or reduced below the threshold voltage), the MOSFET turns off, and current flow is blocked.
The typical operation can be summarized as:
V_GS (Gate-Source Voltage): Controls the switching of the MOSFET.
For an N-channel MOSFET like the 2N7002K, when VGS > VGS(threshold), the MOSFET will conduct (turn on).
When VGS < VGS(threshold), the MOSFET will not conduct (turn off).
V_DS (Drain-Source Voltage): The voltage between the Drain and Source determines the MOSFET’s behavior.
If VGS > VGS(threshold) and V_DS > 0, the MOSFET is in the on state and current flows from Drain to Source.
If VGS < VGS(threshold) or V_DS = 0, the MOSFET is in the off state.
FAQ (Frequently Asked Questions)
Q: What is the 2N7002K? A: The 2N7002K is a N-channel MOSFET used for switching applications. Q: What type of package does the 2N7002K come in? A: The 2N7002K comes in a TO-92 package. Q: How many pins does the 2N7002K have? A: The 2N7002K has 3 pins: Gate, Drain, and Source. Q: What is the function of the Gate pin in the 2N7002K? A: The Gate controls the flow of current between the Drain and Source. A voltage applied to the Gate turns the MOSFET on or off. Q: What is the Drain pin used for in the 2N7002K? A: The Drain pin is where current flows out of the MOSFET when it is turned on. Q: What is the Source pin used for in the 2N7002K? A: The Source pin is where current enters the MOSFET. Q: What is the threshold voltage of the 2N7002K? A: The threshold voltage (V_GS(th)) of the 2N7002K is typically between 1.3V and 3V. Q: Can the 2N7002K be used as a switch? A: Yes, the 2N7002K can be used as a low-power switch for various electronic applications. Q: What is the maximum Drain-Source voltage of the 2N7002K? A: The maximum V_DS for the 2N7002K is typically 60V.Q: What is the maximum Gate-Source voltage for the 2N7002K?
A: The maximum V_GS is typically ±20V.Q: How much current can the 2N7002K handle?
A: The maximum Drain current (I_D) is typically 200mA.Q: Can the 2N7002K be used in high-power applications?
A: No, the 2N7002K is designed for low-power applications and is not suitable for high-power circuits.Q: Is the 2N7002K suitable for driving loads directly?
A: Yes, but it is typically used in low-power logic circuits rather than high-power loads.Q: Can the 2N7002K be used in low-voltage logic circuits?
A: Yes, it is commonly used in low-voltage logic circuits due to its low Gate threshold voltage.Q: What is the maximum power dissipation of the 2N7002K?
A: The maximum power dissipation is typically 500mW.Q: Can the 2N7002K be used in RF applications?
A: The 2N7002K is generally not suitable for high-frequency RF applications.Q: What is the typical R_DS(on) for the 2N7002K?
A: The typical RDS(on) is around 5 ohms when VGS is sufficiently above the threshold.Q: How does the 2N7002K compare to other MOSFETs?
A: The 2N7002K is a small, low-power MOSFET suitable for general switching applications but not for high-current or high-power applications.Q: What is the maximum ambient temperature for the 2N7002K?
A: The maximum ambient temperature is typically 150°C.Q: Can I use the 2N7002K in a series with other components?
A: Yes, the 2N7002K can be used in series with resistors or other components depending on the circuit design.This summary and FAQ provide a detailed understanding of the 2N7002K MOSFET, its pin functions, and common questions related to its use in electronic circuits.
