## 3N65G-TM3-R Technical Overview The **3N65G-TM3-R** is an N-Channel enhancement mode Power MOSFET designed primarily for high-speed switching applications and power supplies. It is manufactured by UTC (Unisonic Technologies Co., Ltd). ### 1. Key Technical Specifications The following table summarizes the core electrical characteristics of the device: | Parameter | Symbol | Typical Value | Unit | | :--- | :--- | :--- | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | 650 | V | | **Continuous Drain Current** | $I_D$ | 3.0 | A | | **Pulsed Drain Current** | $I_{DM}$ | 12 | A | | **Static Drain-Source On-Resistance** | $R_{DS(ON)}$ | 3.0 (Max) | $\Omega$ | | **Gate-Source Voltage** | $V_{GSS}$ | $\pm$30 | V | | **Total Gate Charge** | $Q_g$ | 12 | nC | | **Package Type** | - | TO-251 (TM3) | - | --- ### 2. Nomenclature Breakdown The part number follows the standard UTC coding system: * **3**: Represents the current rating (approx. 3 Amperes). * **N**: Indicates an N-Channel MOSFET. * **65**: Indicates the breakdown voltage (650 Volts). * **G**: Represents a "Halogen Free" or "Green" product. * **TM3**: Refers to the physical package style (**TO-251**, also known as I-PAK). * **R**: Indicates the packaging method (Tape and Reel or specific orientation). --- ### 3. Core Features & Benefits * **High Switching Speed:** Optimized for applications requiring rapid transitions between ON and OFF states. * **Low Gate Charge:** Reduces the power required from the gate driver, improving overall system efficiency. * **Robust Avalanche Characteristics:** Capable of withstanding high energy pulses (Unclamped Inductive Switching). * **Low $R_{DS(ON)}$:** Minimizes conduction losses during the "ON" state. --- ### 4. Common Applications The 3N65G-TM3-R is widely used in power management circuits, including: 1. **Switch Mode Power Supplies (SMPS):** Used as the primary switching element. 2. **LED Drivers:** Providing stable current control in lighting systems. 3. **DC-DC Converters:** Efficient voltage regulation for industrial and consumer electronics. 4. **Electronic Ballasts:** Used in fluorescent lighting control. --- ### 5. Pin Configuration (TO-251) Looking at the front of the package (from left to right): 1. **Gate (G):** Controls the MOSFET's switching. 2. **Drain (D):** Connected to the load (internally connected to the metal tab). 3. **Source (S):** Connected to the ground or negative rail.