The **UT3403L-AE3-R** is a specific part number for a P-Channel enhancement mode Field Effect Transistor (MOSFET) manufactured by UTC (Unisonic Technologies). It is designed for low-voltage, high-speed switching applications. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the UT3403L-AE3-R: | Parameter | Symbol | Value | Unit | | :--- | :--- | :--- | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | -30 | V | | **Gate-Source Voltage** | $V_{GSS}$ | ±12 | V | | **Continuous Drain Current** | $I_D$ | -2.6 | A | | **Pulsed Drain Current** | $I_{DM}$ | -10 | A | | **Drain-Source On-Resistance** | $R_{DS(ON)}$ | 115 @ $V_{GS}$=-10V | mΩ (max) | | **Drain-Source On-Resistance** | $R_{DS(ON)}$ | 150 @ $V_{GS}$=-4.5V | mΩ (max) | | **Total Gate Charge** | $Q_g$ | 5.5 | nC (typ) | --- ### 2. Package and Pin Configuration The "AE3" suffix typically denotes the **SOT-23** package, which is a small, surface-mount plastic package ideal for space-constrained designs. | Pin Number | Pin Name | Function | | :--- | :--- | :--- | | 1 | **G** | Gate: Controls the transistor state | | 2 | **S** | Source: Connected to the positive supply (in P-Channel) | | 3 | **D** | Drain: Connected to the load | --- ### 3. Features and Applications This component is highly efficient due to its low on-resistance and fast switching speeds. #### **Key Features:** * **Low On-Resistance:** Reduces power dissipation during the "ON" state. * **Low Threshold Voltage:** Can be driven by low-voltage logic circuits. * **Halogen-Free:** Compliant with environmental standards (denoted by the 'L' in the suffix). #### **Common Applications:** * **Power Management:** Used in battery-powered portable devices. * **Load Switching:** Acting as an electronic switch to turn sections of a circuit on or off. * **DC-DC Converters:** Integrated into buck or boost regulators. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **UT3403**: The series/model number. * **L**: Lead-free/Halogen-free material. * **AE3**: SOT-23 package type. * **R**: Tape and Reel packaging (for automated assembly). ---