The **AMELA3012S-R68M** is a high-performance, surface-mount (SMD) power inductor typically used in DC-DC converter applications. Below is a detailed breakdown of its electronic specifications and characteristics. ### 1. General Specifications The part number follows a standard naming convention that defines its physical size and electrical properties. | Parameter | Specification | | :--- | :--- | | **Component Type** | Fixed Power Inductor | | **Inductance** | 0.68 µH (indicated by "R68") | | **Tolerance** | ±20% (indicated by "M") | | **Package Size** | 3.0 x 3.0 x 1.2 mm (indicated by "3012") | | **Mounting Type** | SMD/SMT (Surface Mount) | --- ### 2. Electrical Characteristics These inductors are designed for high efficiency and high current handling in compact spaces. * **Inductance (L):** 0.68 µH. This value is ideal for high-frequency switching regulators (usually in the 1MHz to 5MHz range). * **DC Resistance (DCR):** Usually very low (in the milliohm range) to minimize power loss and heat generation. * **Saturation Current (Isat):** The current level at which the inductance drops by a specified percentage (usually 30%). For this size, it typically handles 3A to 5A. * **Temperature Rise Current (Irms):** The current that causes the component's temperature to rise by 40°C. --- ### 3. Construction and Materials The "S" in the part number often denotes a **Shielded** construction. * **Magnetic Shielding:** Uses a magnetic resin coating or a ferrite drum core to minimize Electromagnetic Interference (EMI). This is critical for densely packed PCBs where components are close to sensitive ICs. * **Core Material:** Typically a Metal Alloy or Ferrite core, providing high saturation characteristics and stability over temperature variations. --- ### 4. Common Applications Due to its small footprint (3012 size) and low profile (1.2mm height), it is commonly found in: * **Mobile Devices:** Smartphones, tablets, and wearables. * **Power Management Units (PMICs):** Used in buck/boost converters. * **IoT Modules:** Compact wireless sensors where space is limited. * **SSD/Storage:** For voltage regulation on high-speed drives. --- ### 5. Part Number Breakdown ```text AMELA 3012 S - R68 M | | | | | | | | | +-- Tolerance (M = ±20%) | | | +------ Inductance Value (R68 = 0.68uH) | | +----------- Type (S = Shielded) | +--------------- Dimensions (3.0 x 3.0 x 1.2 mm) +-------------------- Series Identifier ```