Before working with this MOSFET in compact switching designs or microcontroller-based circuits, it is important to understand the 2N7002 pinout, as correct identification of the Gate, Source, and Drain terminals ensures proper device operation and prevents failure. The 2N7002 is a small SMD N-channel MOSFET commonly used in logic-level switching, signal routing, and high-speed digital applications due to its low gate drive requirement, fast switching capability, and efficient performance in miniature SOT-23 packages.
Introduction to 2N7002 N-Channel MOSFET
The 2N7002 is a popular N-channel enhancement-mode MOSFET designed for low-power switching, level shifting, and high-speed digital control applications. It operates efficiently with logic-level gate voltages, making it ideal for Arduino, ESP32, STM32, Raspberry Pi, and other microcontroller platforms. With a 60V maximum drain-source voltage and compact SOT-23 footprint, the device is well-suited for portable electronics, embedded systems, IoT modules, and general-purpose switching tasks.
2N7002 N-Channel MOSFET
Pinout of 2N7002
Pin Configuration of 2N7002 Pinout
| Pin# | Pin Name |
|---|---|
| 1 | Gate |
| 2 | Source |
| 3 | Drain |
Understanding the 2N7002 Pinout Configuration
In its SOT-23 package, the 2N7002 pinout follows a G-S-D sequence:
- Gate – controls switching
- Source – current output terminal
- Drain – current input terminal
Correct pin orientation is crucial for high-speed and low-power switching performance.
Key Features of 2N7002 MOSFET
- Logic-level MOSFET operation
- Very high input impedance
- Fast switching capability
- Suitable for microcontroller interfaces
- Low gate drive voltage
- Compact SOT-23 SMD design
2N7002 MOSFET Datasheet and Specifications
- Type: N-Channel Enhancement MOSFET
- Drain-Source Voltage (VDS): 60V
- Continuous Drain Current (ID): 115mA
- Total Power Dissipation (Ptot): 200mW
- Gate Threshold Voltage (VGS(th)): 2.5V
- Operating and Storage Temperature Range: -55 to 150 °C
- Package: SOT-23
- Pinout: Gate – Source – Drain
Working Principle of 2N7002 MOSFET
The 2N7002 operates by applying a voltage to the Gate to control the formation of a conductive channel between the Drain and Source. When the Gate exceeds its threshold voltage, current flows through the MOSFET, enabling it to function as a high-speed switch. Its high input impedance allows direct interfacing with microcontroller GPIO pins while consuming minimal gate current, making it ideal for logic driving and lightweight load control.
More Circuit Layouts
Applications of 2N7002 MOSFET
- Level shifting for microcontrollers
- Digital switching circuits
- Signal routing and multiplexing
- Low-power LED switching
- PWM-based control
- IoT and compact SMD electronics
- Battery-powered systems
Equivalent and Alternative MOSFETs
- BSS138
- 2N7000 (through-hole version)
- IRLML2502
- AO3400A (higher current alternative)
- BS170 (similar functionality)
Frequently Asked Questions (FAQ)
Q1: What is the pinout of the 2N7002?
The pinout is G-S-D in the SOT-23 package.
Q2: Can the 2N7002 be driven by 3.3V microcontrollers?
Yes, it is a logic-level MOSFET suitable for 3.3V and 5V logic.
Q3: How much current can the 2N7002 handle?
It can switch up to 115mA continuously.
Q4: Is 2N7002 the SMD version of 2N7000?
Yes, both have similar electrical behavior but different packages and current limits.
Conclusion
The 2N7002 is a compact, efficient, and versatile N-channel MOSFET ideal for modern low-power and high-speed electronic designs. Its logic-level compatibility, small SOT-23 footprint, and dependable switching characteristics make it a favorite choice for microcontroller projects, IoT hardware, and compact digital control circuitry.
Datasheet & Pinout of 2N7002 N-Channel MOSFET
Click the following Button to download the datasheet of 2N7002 MOSFET :
More projects:
- Video Transmitter DIY Homemade FM Radio Transmitter
- Adjustable Power Supply DIY Battery Charger
- 12V-220V 500 Watt inverter DIY Homemade
- MPPT Solar Charge Controller DIY Homemade
- DIY LA4440 bass amplifier homemade
For more project and circuit diagrams, you can go through the Schematics in the main menu where you can find many interesting projects and circuit diagrams like audio amplifier circuits, voltage booster circuit, battery charger circuit and timer circuits etc., which are all beginner circuit projects. Feel free to check them out!
Thank you for visiting the article.
