The **SD10-220-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Cooper Bussmann/Coiltronics)**. It is part of the SD10 series, designed primarily for surface-mount applications where space and height are critical. --- ### 1. Key Technical Specifications The part number "SD10-220-R" provides specific data about its electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 22 µH | | **Tolerance** | ±20% | | **Rated Current (Irms)** | 0.77 Amps | | **Saturation Current (Isat)** | 0.72 Amps | | **DC Resistance (DCR)** | 0.395 Ohms (Typical) | | **Package/Case** | SMD (5.2mm x 5.2mm x 1.0mm) | | **Shielding** | Shielded (Magnetic) | --- ### 2. Physical & Material Composition * **Core Material:** Ferrite core. This ensures high efficiency and low core losses at high frequencies. * **Shielding:** It features a magnetic shield, which minimizes **Electromagnetic Interference (EMI)**. This is crucial for densely packed circuit boards where noise can interfere with adjacent components. * **Dimensions:** The "10" in the series name refers to the height (approximately 1.0mm), making it an ultra-thin component. --- ### 3. Application Use Cases This specific inductor is commonly found in small consumer electronics and power management circuits: * **DC-DC Converters:** Used in "Buck" (step-down) or "Boost" (step-up) converters to store energy. * **Mobile Devices:** Ideal for smartphones, tablets, and wearables due to the 1.0mm height profile. * **Battery Powered Equipment:** Used where high efficiency is required to extend battery life. * **LCD Displays:** Often used in driver circuits for backlighting. --- ### 4. Part Number Breakdown The nomenclature follows a specific pattern: * **SD:** Series name (Shielded Drum). * **10:** Size code (refers to the ~1.0mm height). * **220:** Inductance code (22 followed by 0 zeros = 22 µH). * **R:** RoHS compliant (Lead-free). ---