The **M3H17FAG-R** is a high-performance **Power MOSFET** (Metal-Oxide-Semiconductor Field-Effect Transistor) manufactured by **Rohm Semiconductor**. It belongs to their SiC (Silicon Carbide) Schottky Barrier Diode integrated MOSFET series, specifically designed for high-efficiency power conversion. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the M3H17FAG-R: | Parameter | Value | | :--- | :--- | | **Component Type** | SiC (Silicon Carbide) MOSFET | | **Drain-Source Voltage ($V_{DSS}$)** | 650V | | **Continuous Drain Current ($I_D$)** | 30A (at $T_C = 25^\circ C$) | | **Static Drain-Source On-Resistance ($R_{DS(on)}$)** | Typ. 60mΩ | | **Package Type** | TO-263-7 (Surface Mount) | | **Gate-Source Voltage ($V_{GSS}$)** | -4V to +22V | --- ### 2. Core Features * **Silicon Carbide (SiC) Technology:** Unlike traditional Silicon MOSFETs, SiC allows for much faster switching speeds and lower energy loss at high temperatures. * **Low On-Resistance:** The low $R_{DS(on)}$ reduces conduction losses, which is critical for maintaining thermal efficiency in compact designs. * **High Thermal Conductivity:** SiC material dissipates heat more effectively than standard Silicon, allowing the part to operate reliably under high power density. * **7-Pin Package:** The TO-263-7 package provides a dedicated **Source Sense** pin, which minimizes the influence of source inductance on the gate drive, leading to cleaner and faster switching. --- ### 3. Functional Blocks & Pins The 7-pin configuration is a specific design choice to optimize performance: 1. **Drain (Large Tab):** High voltage input/output. 2. **Gate:** Controls the switching state of the MOSFET. 3. **Source Sense:** Used for the gate-driver return path to prevent voltage spikes from interfering with the control signal. 4. **Source:** Main power current return path. --- ### 4. Typical Applications Due to its high voltage rating and fast switching capabilities, the M3H17FAG-R is commonly found in: * **EV Charging Stations:** DC/DC converters and AC/DC rectifiers. * **Solar Inverters:** Converting DC power from panels to grid-standard AC. * **Switch Mode Power Supplies (SMPS):** High-efficiency industrial power units. * **Motor Drives:** Controlling high-power industrial motors with minimal energy loss. ---