The **UT2309L-AE3-R** is a specific P-Channel enhancement mode Field Effect Transistor (MOSFET) manufactured by Unisonic Technologies (UTC). It is designed for high-density cell designs and low-voltage applications. --- ## 1. Technical Specifications The following table summarizes the key electrical characteristics of the UT2309L-AE3-R: | Parameter | Symbol | Maximum Rating | | :--- | :---: | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | -30 V | | **Gate-Source Voltage** | $V_{GSS}$ | ±20 V | | **Continuous Drain Current** | $I_D$ | -1.6 A | | **Pulsed Drain Current** | $I_{DM}$ | -5.0 A | | **Power Dissipation** | $P_D$ | 0.35 W | | **Drain-Source On-Resistance** | $R_{DS(ON)}$ | 150 mΩ (at $V_{GS}$ = -10V) | | **Package Type** | SOT-23 | Surface Mount (SMD) | --- ## 2. Key Features * **Low On-Resistance:** Provides high efficiency during switching by minimizing power loss. * **Fast Switching Speed:** Ideal for high-frequency applications. * **Low Threshold Voltage:** Operates effectively at low logic-level voltages. * **Halogen-Free:** The "L" in the part number indicates a Lead-free/Halogen-free construction (RoHS compliant). --- ## 3. Pin Configuration The device uses a standard **SOT-23** package. The pinout is typically as follows: 1. **Gate (G):** Controls the state of the MOSFET (On/Off). 2. **Source (S):** The source of the charge carriers. 3. **Drain (D):** The exit point for the charge carriers. --- ## 4. Typical Applications This MOSFET is commonly found in battery-powered portable devices due to its small footprint and efficiency. Common uses include: * **Power Management:** Load switching and battery protection circuits. * **DC-DC Converters:** Used in buck or boost regulators. * **Motor Control:** Driving small DC motors in consumer electronics. ---