## 2SK1390-R: Electronic Specifications and Overview The **2SK1390-R** is an N-Channel Power MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) primarily designed for high-speed switching applications. It is commonly found in power supplies, motor drivers, and DC-DC converters. ### 1. Key Technical Specifications The "R" suffix typically refers to a specific gain or voltage classification provided by the manufacturer (often Renesas or Hitachi). | Parameter | Symbol | Maximum Rating | | :--- | :--- | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | 500 V | | **Gate-Source Voltage** | $V_{GSS}$ | ±30 V | | **Continuous Drain Current** | $I_D$ | 10 A | | **Pulsed Drain Current** | $I_{D(pulse)}$ | 40 A | | **Power Dissipation** ($T_c = 25^\circ C$) | $P_D$ | 100 W | | **Static Drain-Source On-Resistance** | $R_{DS(on)}$ | ~0.65 Ω | | **Channel Temperature** | $T_{ch}$ | 150 °C | --- ### 2. Physical Characteristics The device is usually housed in a power package to handle high heat dissipation. * **Package Type:** TO-3P or TO-220 (Depending on the specific manufacturing run, though TO-3P is standard for the 100W rating). * **Pin Configuration:** 1. **Gate (G):** Controls the flow of current. 2. **Drain (D):** Connected to the load. 3. **Source (S):** Connected to the ground or common. --- ### 3. Features and Applications #### Features * **Low On-Resistance:** Reduces power loss during the "ON" state. * **High Speed:** Fast switching times make it ideal for high-frequency PWM (Pulse Width Modulation). * **High Input Impedance:** Allows for easy driving from logic-level circuits (though a gate driver is recommended for high speeds). #### Common Applications * **Switching Regulators:** Used in PC and industrial power supplies. * **UPS (Uninterruptible Power Supplies):** Managing high voltage battery-to-AC conversion. * **Motor Control:** Driving DC motors through H-Bridge circuits. * **DC-DC Converters:** Voltage stepping in telecommunications equipment. --- ### 4. Basic Circuit Symbolism ```text Drain (D) | ---| Gate (G) | |<--- (N-Channel) ---| | Source (S) ```