The **UTD413G-AA3-R** is an N-Channel enhancement mode Power MOSFET typically manufactured by **UTC (Unisonic Technologies)**. It is designed for high-density, high-efficiency applications such as power management and motor control. ### 1. Key Technical Specifications The following table highlights the primary electrical characteristics of the UTD413G-AA3-R: | Parameter | Symbol | Maximum Rating | Unit | | :--- | :--- | :--- | :--- | | Drain-Source Voltage | $V_{DSS}$ | 40 | V | | Gate-Source Voltage | $V_{GSS}$ | ±20 | V | | Continuous Drain Current | $I_D$ | 12 | A | | Pulsed Drain Current | $I_{DM}$ | 30 | A | | Static Drain-Source On-Resistance | $R_{DS(ON)}$ | 45 (Typ) / 55 (Max) | mΩ | | Total Gate Charge | $Q_g$ | 15 (Max) | nC | --- ### 2. Package and Part Number Breakdown The suffixing in the part number provides specific information regarding the physical build and packaging: * **UTD413G**: The base part number identifying the N-Channel MOSFET series. * **AA3**: Refers to the **SOT-223** package type (a small surface-mount transistor package). * **R**: Indicates that the part is supplied in **Tape and Reel** format for automated assembly. * **G**: Signifies that the part is **Halogen Free** and Lead-Free (RoHS compliant). --- ### 3. Features and Benefits * **Low On-Resistance:** Minimizes power dissipation during operation, improving overall energy efficiency. * **Fast Switching:** Low gate charge allows the device to switch at high frequencies, reducing switching losses. * **Compact Footprint:** The SOT-223 package is ideal for applications where PCB space is limited but thermal management is still required. --- ### 4. Common Applications The UTD413G-AA3-R is generally used in the following circuits: 1. **DC-DC Converters:** Acting as a switch to regulate voltage levels. 2. **Load Switching:** Used to turn peripheral power rails on or off in portable electronics. 3. **Motor Control:** Driving small DC motors or brushless fans. 4. **Power Management:** Battery protection circuits and power distribution units. ---