The **F2D1-2012A-R82MC** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converter circuits. It belongs to a category of "Molded Power Inductors," which are designed for high-current applications with minimal electromagnetic interference (EMI). ### 1. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DCR (DC Resistance)** | Approx. 14.5 mΩ (typical) | | **Isat (Saturation Current)** | ~7.5A to 8.5A | | **Irms (Rated Current)** | ~6.0A to 7.0A | | **Package Size** | 2012 (Metric) / 0805 (Imperial) | | **Construction** | Metal Alloy / Molded | --- ### 2. Breakdown of the Part Number The alphanumeric code typically follows this nomenclature: * **F2D1**: Series identifier (Manufacturer specific, usually indicating high-current molded type). * **2012**: Physical dimensions ($2.0 \text{mm} \times 1.2 \text{mm}$). * **A**: Design/Revision code. * **R82**: Inductance value ($0.82 \text{ µH}$). * **M**: Tolerance ($M = \pm 20\%$). * **C**: Packaging/Finish code (often referring to Carrier Tape). --- ### 3. Key Electronic Characteristics #### A. Magnetic Shielding Because this is a **molded inductor**, the coil is embedded in a metallic powder composite. This provides "magnetic shielding," which prevents the magnetic field from interfering with neighboring components on the PCB. #### B. Soft Saturation Unlike ferrite core inductors that lose inductance sharply when current limits are exceeded, this metal alloy inductor features **soft saturation**. This means the inductance drops gradually, providing better stability in power supply spikes. #### C. Low Profile The "2012" footprint is extremely small, making it ideal for compact consumer electronics where board space is at a premium. --- ### 4. Common Applications These parts are typically found in: * **Voltage Regulator Modules (VRM):** Specifically for CPUs or GPUs. * **Mobile Devices:** Smartphones and tablets for battery management. * **DC-DC Converters:** Point-of-load (POL) converters. * **IoT Devices:** Where high efficiency and small size are required.