The **2N65ZLG-TM3-R** is a specific N-channel enhancement mode Power MOSFET manufactured by UTC (Unisonic Technologies). It is designed for high-voltage, high-speed switching applications. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature where "2N65" generally denotes a 2 Ampere, 650V rated component. | Parameter | Specification | | :--- | :--- | | **Drain-Source Voltage ($V_{DSS}$)** | 650V | | **Continuous Drain Current ($I_D$)** | 2.0A | | **Pulsed Drain Current ($I_{DM}$)** | 8.0A | | **Static Drain-Source On-Resistance ($R_{DS(ON)}$)** | 5.0 $\Omega$ (Max) | | **Gate-Source Voltage ($V_{GSS}$)** | $\pm$ 30V | | **Package Type** | TO-251 (TM3) | | **Total Gate Charge ($Q_g$)** | 11.5 nC (Typical) | --- ### 2. Physical and Mechanical Features The suffix **-TM3-R** refers to the packaging and shipping method: * **TM3:** Refers to the **TO-251** package (also known as I-PAK). This is a through-hole package similar to TO-252 (D-PAK) but with long leads. * **R:** Indicates **RoHS Compliant** (Lead-free) and usually signifies the "Tape and Reel" or "Tube" packing depending on the specific UTC catalog entry. * **Z (in 2N65Z):** Often indicates "Zener Protected" gates, providing enhanced ESD (Electrostatic Discharge) protection. --- ### 3. Electronic Characteristics * **High Switching Speed:** Optimized for applications requiring fast transitions to minimize switching losses. * **Low Gate Charge:** Requires minimal current from the gate driver to switch on/off, making it compatible with many PWM controller ICs. * **Avalanche Ruggedness:** Designed to handle momentary voltage spikes beyond $V_{DSS}$ without immediate failure (within specified energy limits). --- ### 4. Typical Applications Because of its high voltage rating and relatively low current, it is commonly used in: 1. **Switch Mode Power Supplies (SMPS):** Used in the primary side of small AC/DC adapters. 2. **LED Drivers:** Ideal for driving high-voltage LED strings. 3. **Electronic Ballasts:** Used in lighting control circuits. 4. **DC-DC Converters:** High-efficiency power conversion in industrial equipment. --- ### 5. Equivalent/Alternative Parts If you cannot find the UTC 2N65ZLG, these are standard industry equivalents (though you must check the package type): * **STP2NK60Z** * **FQD2N60** * **SSS2N60B**