The **AMELA3012S-R30M** is a high-performance, shielded power inductor primarily designed for surface-mount technology (SMT) applications. It is part of a series often used in compact power conversion circuits due to its balance of high current handling and small physical footprint. --- ### 1. Key Technical Specifications The part number follows a standard nomenclature for electronic components. Here is the breakdown of its primary electrical characteristics: | Feature | Specification | | :--- | :--- | | **Inductance** | 0.30 µH (Indicated by "R30") | | **Tolerance** | ±20% (Indicated by "M") | | **Package Size** | 3.0 x 3.0 x 1.2 mm (approximate) | | **Construction** | Metal Alloy / Magnetic Shielded | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### 2. Physical and Material Construction * **Core Material:** These inductors typically utilize a **Metal Alloy core**. Unlike traditional ferrite cores, metal alloys offer higher saturation currents and better stability across temperature fluctuations. * **Shielding:** It is **magnetically shielded**. This prevents electromagnetic interference (EMI) from leaking out and affecting nearby sensitive components on the PCB, which is critical in dense modern electronics. * **Low Profile:** The "12" in the suffix usually denotes a height of approximately **1.2mm**, making it suitable for slim devices like smartphones, tablets, or wearable tech. --- ### 3. Electrical Performance Characteristics The AMELA3012S-R30M is engineered for high-efficiency power stages: 1. **High Saturation Current ($I_{sat}$):** Because of the metal powder core, the inductor can handle high peak currents without the inductance dropping off sharply (soft saturation). 2. **Low DC Resistance (DCR):** The internal windings are designed to minimize resistance, which reduces power loss (heat generation) and increases overall battery life/efficiency. 3. **Frequency Range:** Optimized for high-frequency switching regulators (DC-DC converters) operating in the MHz range. --- ### 4. Typical Applications This component is commonly found in the following circuits: * **DC-DC Converters:** Buck, Boost, and Buck-Boost regulators. * **Mobile Devices:** Power management units (PMICs) for CPUs and GPUs. * **IoT Modules:** Compact sensors requiring efficient power delivery. * **Laptops/Tablets:** Voltage regulation modules (VRM). ---