The **M3H14FDG-R** is a high-performance **N-Channel Enhancement Mode MOSFET** commonly used in power management and switching applications. It is manufactured by companies like *MCC (Micro Commercial Components)* or *UBIQ*. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. Key Technical Specifications The following table outlines the primary electrical ratings for the M3H14FDG-R: | Parameter | Symbol | Typical Value | | :--- | :--- | :--- | | **Drain-Source Voltage** | $V_{DSS}$ | 30V | | **Continuous Drain Current** | $I_D$ | ~50A - 70A (Case dependent) | | **Static Drain-Source On-Resistance** | $R_{DS(on)}$ | ~1.4 mΩ @ $V_{GS}=10V$ | | **Gate-Source Voltage** | $V_{GS}$ | ±20V | | **Total Gate Charge** | $Q_g$ | ~40 - 55 nC | | **Package Type** | Package | DFN5x6 / PowerPDFN56 | --- ### 2. Physical and Structural Features * **Package (DFN5x6):** This is a surface-mount package designed for high thermal efficiency. The bottom pad allows for direct soldering to the PCB copper, facilitating rapid heat dissipation. * **N-Channel Logic:** It requires a positive gate voltage relative to the source to allow current to flow from the drain to the source. * **Trench Technology:** It typically utilizes advanced trench MOSFET technology to achieve extremely low on-resistance ($R_{DS(on)}$), which minimizes power loss during the "ON" state. --- ### 3. Applications Due to its high current handling and low resistance, the M3H14FDG-R is frequently found in: 1. **DC-DC Converters:** Used in point-of-load (POL) power supplies for motherboards and servers. 2. **Battery Protection:** Ideal for BMS (Battery Management Systems) due to low heat generation. 3. **Motor Drivers:** Suitable for small BLDC motor control circuits. 4. **Load Switching:** Used to turn high-current peripherals on or off via microcontroller signals. --- ### 4. Schematic Representation In a circuit diagram, the pinout follows the standard PowerPDFN56 configuration: ```text Pin 1-3: Source (S) Pin 4: Gate (G) Pin 5-8: Drain (D) - Usually the large thermal pad ``` ---