## Technical Overview of UT3415G-AE3-R The **UT3415G-AE3-R** is a high-performance **P-Channel Enhancement Mode Field Effect Transistor (MOSFET)** manufactured by Unisonic Technologies (UTC). It is primarily designed for power management applications requiring low on-resistance and high efficiency. --- ### 1. Key Technical Specifications The following table outlines the core electrical characteristics of the device: | Parameter | Symbol | Maximum Rating | Unit | | :--- | :--- | :--- | :--- | | Drain-Source Voltage | $V_{DS}$ | -20 | V | | Gate-Source Voltage | $V_{GS}$ | ±8 | V | | Continuous Drain Current | $I_D$ | -4.0 | A | | Pulsed Drain Current | $I_{DM}$ | -15 | A | | Power Dissipation | $P_D$ | 1.4 | W | | On-State Resistance ($V_{GS}=-4.5V$) | $R_{DS(ON)}$ | 50 (Max) | mΩ | | Operating Temperature | $T_J$ | -55 ~ +150 | °C | --- ### 2. Physical and Packaging Information The suffix in the part number provides details about the packaging and material: * **Package Type (AE3):** This indicates a **SOT-23** surface-mount package. It is a small-footprint package ideal for space-constrained PCB designs. * **RoHS Compliance (G):** The "G" signifies that the part is **Halogen-free** and Lead-free (Green product). * **Packing (R):** The "R" stands for **Tape and Reel**, which is the standard format for automated pick-and-place assembly. --- ### 3. Key Features and Benefits * **Low $R_{DS(ON)}$:** Minimizes power loss during conduction, improving overall battery life in portable electronics. * **High-Speed Switching:** Optimized for applications requiring fast transitions. * **Low Threshold Voltage:** Can be driven by low-voltage logic levels, making it compatible with modern microcontrollers. --- ### 4. Common Applications Due to its P-Channel nature and small size, the UT3415G is frequently used in: 1. **Load Switches:** Controlling power rails to various sub-circuits. 2. **Battery Management:** Protection circuits and charging paths in mobile devices. 3. **DC-DC Converters:** Used in the high-side switch position. 4. **Power Management:** General-purpose switching in notebooks and tablets. --- ### 5. Circuit Symbol and Pinout (SOT-23) ```text SOT-23 Top View _______ G | 1 3 | D | 2 | ------- S 1: Gate (G) 2: Source (S) 3: Drain (D) ```