The **ADS101-R680DB** is a high-performance **Surface Mount Device (SMD) Power Inductor**. These components are specifically designed for high-frequency DC-DC conversion applications where space is limited and high current handling is required. --- ## 1. Technical Specifications The part number follows a standard naming convention that reveals its primary electrical characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 0.68 µH | The nominal inductance value (denoted by R68). | | **Tolerance** | ±20% | Standard deviation from the nominal value. | | **DC Resistance (DCR)** | ~1.5 mΩ - 2.5 mΩ | Low resistance to minimize power loss and heat. | | **Saturation Current** | ~15A - 25A | The current at which inductance drops by 20-30%. | | **Operating Temp** | -40°C to +125°C | Suitable for industrial and automotive environments. | | **Construction** | Shielded | Magnetic shielding to prevent EMI (Electromagnetic Interference). | --- ## 2. Key Features The ADS101-R680DB belongs to a category of "Molded Power Inductors." Its internal construction provides several advantages: * **Composite Core Material:** Usually made from metal alloy powder, which provides a "soft" saturation characteristic (it doesn't lose inductance abruptly as current increases). * **Low Profile:** The "101" or similar size codes usually refer to a footprint of approximately 10mm x 10mm with a very low height (often <4mm). * **High Efficiency:** Due to the extremely low DCR (DC Resistance), it reduces $I^2R$ losses, making it ideal for high-efficiency power supplies. * **Shielded Design:** The molded body acts as a magnetic shield, significantly reducing magnetic flux leakage and noise interference with nearby components. --- ## 3. Typical Applications This component is typically found in the power stage of modern electronics: 1. **Voltage Regulator Modules (VRM):** Used in CPU and GPU power delivery on motherboards. 2. **DC-DC Converters:** Point-of-load (POL) converters for converting 12V or 5V down to 1.xV for digital logic. 3. **Battery Powered Devices:** Used in laptops and tablets where high efficiency is critical for battery life. 4. **Telecommunications:** Base station power modules and high-current networking equipment. --- ## 4. Soldering and Layout Recommendations Because this is an SMD component handling high current, the PCB layout is critical: ```markdown 1. Use wide copper traces to handle high current and act as a heatsink. 2. Place the inductor as close as possible to the switching IC to minimize the current loop. 3. Avoid placing sensitive signal traces directly under the inductor to minimize EMI coupling. ```