The **SD10-331-R** is a low-profile, high-power density surface mount (SMD) inductor. It is part of the SD series manufactured by **Eaton (formerly Cooper Bussmann/Coiltronics)**. This component is primarily used for energy storage and filtering in power management circuits. --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the SD10-331-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 330 µH | | **Tolerance** | ±20% | | **Rated Current (Isat)** | 0.165 A (165 mA) | | **DC Resistance (DCR)** | 4.881 Ohms (Max) | | **Core Material** | Ferrite | | **Shielding** | Shielded (Magnetic) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 5.20mm x 5.20mm x 1.00mm | --- ### 2. Part Number Breakdown The nomenclature for this part provides specific details about its construction: * **SD**: Series name (Standard Shielded Drum Core). * **10**: Physical size/profile (approx. 1.0mm height). * **331**: Inductance value code (33 followed by 1 zero = 330 µH). * **R**: RoHS compliant. --- ### 3. Key Features and Applications #### Features * **Magnetically Shielded:** The core design minimizes electromagnetic interference (EMI), making it ideal for densely packed circuit boards. * **Low Profile:** With a height of only 1.0mm, it is designed for ultra-thin electronics. * **Ferrite Core:** Ensures low core losses at high frequencies. #### Common Applications 1. **DC-DC Converters:** Used in "Buck" or "Boost" converters for voltage regulation. 2. **Portable Electronics:** Ideal for smartphones, tablets, and wearables where vertical space is limited. 3. **LED Drivers:** Used to stabilize current in lighting applications. 4. **Battery Powered Devices:** High efficiency helps prolong battery life. --- ### 4. Implementation Example When using this inductor in a circuit, it is typically paired with a switching controller and a capacitor. ```cpp // Example: Basic Buck Converter Calculation for SD10-331-R Inductance = 330uH; Max_Current = 0.165A; // Do not exceed to avoid core saturation ```