The **SD10-1R0-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Bussmann)**. It is part of the SD10 series, designed primarily for surface-mount (SMD) applications where space and efficiency are critical. ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Inductance** | 1.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.0438 Ω (Typical) | | **Saturation Current ($I_{sat}$)** | 2.58 A | | **RMS Current ($I_{rms}$)** | 2.22 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 5.20mm x 5.20mm x 1.00mm | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **SD**: Series name (Shielded Drum Core). * **10**: Indicates the physical size/height (approx. 1.0mm height). * **1R0**: Represents the inductance value. $1R0 = 1.0 \mu H$. * **R**: Indicates compliance with RoHS standards (Lead-free). --- ### 3. Core Features and Benefits * **Magnetic Shielding:** The component is shielded, which minimizes Electromagnetic Interference (EMI). This is crucial for densely packed circuit boards where noise can disrupt sensitive signals. * **Low Profile:** With a height of only 1.0mm, it is ideal for ultra-thin electronics like smartphones, tablets, and wearable tech. * **High Energy Density:** It provides high current handling capabilities relative to its small footprint. * **Ferrite Core:** Utilizes a ferrite drum core for stable performance across high frequencies. --- ### 4. Common Applications The SD10-1R0-R is typically found in power management circuits, including: 1. **DC-DC Converters:** Used as a storage element in buck, boost, or SEPIC converters. 2. **Portable Electronics:** Ideal for mobile phones, digital cameras, and MP3 players. 3. **Computer Peripherals:** Used in SSDs, laptops, and handheld GPS units. 4. **LED Drivers:** Providing stable current for lighting applications. --- ### 5. Land Pattern (Typical Layout) ```markdown Recommended Pad Layout: - Width: 5.50 mm - Length: 5.50 mm - Pad Gap: 2.00 mm ```