The **MAH65FCG-R** is a high-performance, shielded power inductor typically manufactured by **Coilcraft** (or part of a specific industrial series). These components are designed for high-density power applications where space and efficiency are critical. --- ### 1. Technical Specifications The following table summarizes the typical parameters for the MAH65 series inductors (specifically the FC/CG variants): | Parameter | Specification (Typical) | | :--- | :--- | | **Inductance** | Usually ranges from 0.15 µH to 1.5 µH | | **Current Rating (Isat)** | High (up to 50A - 80A depending on value) | | **DC Resistance (DCR)** | Ultra-low (0.2 mΩ to 1.5 mΩ) | | **Operating Temp** | -40°C to +125°C | | **Package Size** | ~6.7 x 6.4 x 5.0 mm | | **Shielding** | Magnetic Shielding (Composite Core) | --- ### 2. Key Electronic Features #### A. Composite Core Technology The "FCG" designation often refers to a molded construction. The inductor uses a metallic powder core that is pressed around the copper coil. This results in: * **Soft Saturation:** The inductance doesn't drop off abruptly when current increases. * **Low EMI:** The molded body acts as a natural magnetic shield, reducing electromagnetic interference. #### B. High Current Handling Due to the use of flat wire or heavy-gauge copper winding internally, these parts can handle significant DC current with minimal self-heating. #### C. High Frequency Performance The MAH65 series is optimized for high-speed switching frequencies (DCDC converters operating from 500kHz up to several MHz). --- ### 3. Application Examples The MAH65FCG-R is commonly found in the following circuits: * **Voltage Regulator Modules (VRMs):** Used in CPU/GPU power delivery for servers and high-end PCs. * **Point-of-Load (POL) Converters:** Step-down (Buck) converters on motherboards. * **Automotive Electronics:** Infotainment systems and ADAS modules requiring high reliability. * **Battery Powered Devices:** Where high efficiency is needed to extend battery life. --- ### 4. Part Number Breakdown (Typical) While naming conventions vary, here is the general logic for this series: * **MAH:** Product Series (Molded Automotive/High-current). * **65:** Physical dimensions (approx. 6mm x 5mm footprint). * **F:** Frequency optimization or material grade. * **CG:** Construction type/Core material. * **R:** Standard suffix for "RoHS Compliant" or "Tape & Reel" packaging.