The **UT138FGP-6-TF3-R** is a specific part number belonging to a Power MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) family, typically manufactured by **Unisonic Technologies Co., Ltd (UTC)**. Below is the detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Overview This component is an **N-Channel enhancement mode power MOSFET**. It is designed for high-speed switching applications and is optimized for low gate charge and low on-state resistance. ### 2. Technical Specifications The typical electrical characteristics for this series are summarized in the table below: | Parameter | Symbol | Value (Typical) | | :--- | :--- | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | 30V - 600V (Varies by suffix) | | **Gate-Source Voltage** | $V_{GSS}$ | ±20V | | **Continuous Drain Current** | $I_D$ | ~6.0A | | **Pulsed Drain Current** | $I_{DM}$ | ~24A | | **Static Drain-Source On-Resistance** | $R_{DS(ON)}$ | Low (High Efficiency) | | **Package Type** | - | TO-220F (Full Pack) | ### 3. Part Number Decoder The suffix and prefix provide specific information about the physical and electrical properties: * **UT138**: The base series number representing the MOSFET family. * **G**: Often indicates "Halogen Free" or "Green" (RoHS Compliant). * **P**: Usually refers to a specific power rating or process technology. * **6**: Generally indicates the continuous drain current rating ($I_D \approx 6A$). * **TF3**: Refers to the **TO-220F** package (Isolated package). * **R**: Indicates the tape and reel or specific packing method. ### 4. Key Features * **High Switching Speed:** Suitable for high-frequency DC/DC converters. * **Low Gate Charge:** Reduces driving requirements and minimizes switching losses. * **Full Pack (TF3):** The TO-220F package is internally insulated, meaning it does not require an additional mica sheet for isolation when mounted to a heatsink. * **Robustness:** High ruggedness against $dv/dt$ and Avalanche energy. ### 5. Common Applications This part is commonly found in: 1. **Switch Mode Power Supplies (SMPS):** Used as the main switching element. 2. **Motor Controllers:** For PWM (Pulse Width Modulation) control. 3. **DC-DC Converters:** Efficient voltage regulation in consumer electronics. 4. **LED Drivers:** High-efficiency power management. ---