### UT3409G-AE2-R Technical Overview The **UT3409G-AE2-R** is a high-performance **P-Channel Enhancement Mode Field Effect Transistor (MOSFET)**. It is primarily designed for power management applications where efficiency and space-saving are critical, such as in mobile devices and DC-DC converters. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the device: | Parameter | Symbol | Maximum Rating | Unit | | :--- | :--- | :--- | :--- | | Drain-Source Voltage | $V_{DSS}$ | -30 | V | | Gate-Source Voltage | $V_{GSS}$ | ±20 | V | | Continuous Drain Current | $I_D$ | -5.1 | A | | Pulsed Drain Current | $I_{DM}$ | -20 | A | | Static Drain-Source On-Resistance | $R_{DS(ON)}$ | 40 (at $V_{GS}$ = -10V) | mΩ | | Total Gate Charge | $Q_g$ | 15 (typ) | nC | --- ### 2. Physical and Packaging Details The part number suffix provides specific information about the manufacturing and packaging: * **Package Type:** **SOT-23-3L** (AE2 code). This is a small, three-lead surface-mount package. * **Halogen-Free:** The "G" indicates that the device is Halogen-free and Lead-free (Green). * **Packing:** The "R" indicates **Tape & Reel** packaging, suitable for automated pick-and-place assembly. --- ### 3. Pin Configuration The SOT-23 package standard pinout for this MOSFET is as follows: 1. **Gate (G):** Controls the switching of the MOSFET. 2. **Source (S):** Connected to the higher potential in a P-channel circuit. 3. **Drain (D):** Connected to the load. --- ### 4. Typical Applications Due to its low $R_{DS(ON)}$ and small footprint, it is commonly used in: * **Load Switching:** Turning power rails on/off in portable electronics. * **Battery Management:** Protection circuits and charging paths. * **PWM Applications:** High-speed switching in DC-DC converters. * **Inverters:** Low voltage power inversion circuits. --- ### 5. Part Number Breakdown | Segment | Meaning | | :--- | :--- | | **UT** | Manufacturer Code (Unisonic Technologies) | | **3409** | Part Family (P-Channel 30V MOSFET) | | **G** | Halogen-Free / Green | | **AE2** | SOT-23-3L Package | | **R** | Tape & Reel Packing |