The **2N7002L-AE2-R** is a specific variant of the widely used 2N7002 N-Channel enhancement-mode Field Effect Transistor (MOSFET). It is designed primarily for low-voltage, low-current switching applications and logic level interfacing. --- ## 1. Technical Specifications The following table summarizes the core electrical characteristics of the 2N7002L-AE2-R: | Parameter | Symbol | Value | | :--- | :--- | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | 60 V | | **Gate-Source Voltage** | $V_{GSS}$ | ±20 V | | **Continuous Drain Current** | $I_D$ | 300 mA | | **Static Drain-Source On-Resistance** | $R_{DS(on)}$ | 2.0 $\Omega$ to 5.0 $\Omega$ (Typical) | | **Gate Threshold Voltage** | $V_{GS(th)}$ | 1.0 V to 2.5 V | | **Power Dissipation** | $P_D$ | 350 mW | | **Operating Temperature** | $T_j$ | -55°C to +150°C | --- ## 2. Key Features and Part Number Breakdown The suffixing in the part number often refers to the manufacturer (typically UTC - Unisonic Technologies) and the packaging style. * **2N7002L**: The base model. The "L" often denotes "Low Threshold" or specific lead-free compliance depending on the manufacturer. * **AE2**: Refers to the **SOT-23-3** package type. This is a small, surface-mount plastic package with three leads. * **R**: Indicates that the parts are supplied on a **Tape and Reel** for automated pick-and-place assembly. ### Terminal Configuration (SOT-23) 1. **Gate (G)**: Controls the flow of current between Drain and Source. 2. **Source (S)**: The terminal where current exits. 3. **Drain (D)**: The terminal where current enters. --- ## 3. Applications Due to its low gate threshold voltage and small footprint, this MOSFET is commonly used in: * **Level Shifting**: Translating logic signals between different voltage domains (e.g., 3.3V to 5V). * **Small Signal Switching**: Driving small relays, LEDs, or transistors. * **Load Switches**: Controlling power to sub-circuits in battery-powered devices. * **Gate Drivers**: Acting as a pre-driver for larger power MOSFETs. --- ## 4. Working Principle (N-Channel) Since this is an **Enhancement Mode** device, the MOSFET remains "OFF" (non-conductive) when the Gate-Source voltage ($V_{GS}$) is 0V. When a positive voltage higher than the threshold ($V_{GS(th)}$) is applied to the Gate, an N-type channel is formed, allowing current to flow from the Drain to the Source.