The **MF1302T-R68** is a Surface Mount (SMD) power inductor commonly used in high-frequency DC-DC converter applications. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications The part number follows a specific nomenclature used by manufacturers (like Coilmaster or similar high-current inductor producers). | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.68 µH (Indicated by R68) | | **Tolerance** | ±20% (Standard for this series) | | **Inductance Code** | R68 | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Package/Case** | Molded Power Inductor | ### 2. Electrical Characteristics The "MF" series is typically characterized by high saturation currents and low DC resistance (DCR), making them efficient for power management. * **Saturation Current ($I_{sat}$):** This is the current level where the inductance drops by a specific percentage (usually 20-30%). For a 0.68µH inductor in this footprint, $I_{sat}$ is typically quite high, often ranging from **15A to 25A** depending on the specific package size. * **Heating Current ($I_{rms}$):** The continuous DC current that causes a temperature rise (usually $\Delta T = 40^\circ C$). * **DC Resistance (DCR):** Extremely low, usually measured in **mΩ** (milliohms), to minimize power loss via heat. ### 3. Key Features * **Magnetic Shielding:** These parts are usually "molded," meaning the coil is embedded in a metal powdered iron core. This provides excellent EMI (Electromagnetic Interference) shielding. * **Low Profile:** Designed for compact electronics like laptops, servers, and mobile devices. * **High Frequency:** Optimized for high-speed switching frequencies (up to several MHz). ### 4. Typical Applications The MF1302T-R68 is primarily found in: 1. **Voltage Regulator Modules (VRM):** For CPUs and GPUs. 2. **DC-DC Converters:** Buck, Boost, or Buck-Boost topologies. 3. **Battery Powered Devices:** Where efficiency and space are critical. 4. **Servers and Networking:** High-current power rails. --- ### 5. Identification Code Breakdown | Part Segment | Meaning | | :--- | :--- | | **MF** | Series Code (Molded Ferrite/Metal Powder) | | **1302** | Dimensions (Approx. 13mm x 13mm base, 2mm height) | | **T** | Packaging (Taping/Reel) | | **R68** | Inductance Value (0.68 microhenries) |