## SD3110-101-R Component Overview The **SD3110-101-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Bussmann)**. It belongs to the SD3110 series, which is designed for applications requiring compact footprints and high efficiency. --- ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 100 µH | | **Tolerance** | ±20% | | **Inductance Code** | 101 (10 x 10^1) | | **DC Resistance (DCR)** | 4.54 Ω (Typical) | | **Saturation Current ($I_{sat}$)** | 0.22 A | | **RMS Current ($I_{rms}$)** | 0.33 A | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Shielded (Magnetic) | --- ### 2. Physical Characteristics * **Dimensions:** Approximately 3.1mm x 3.1mm with a very low height of **1.0mm**. * **Construction:** Ferrite drum core and ring core. The shielding minimizes electromagnetic interference (EMI), which is critical for densely packed circuit boards. * **Mounting:** Surface Mount Device (SMD). * **Compliance:** RoHS compliant and Lead-free. --- ### 3. Functional Breakdown * **Inductance (100 µH):** Acts as energy storage in the form of a magnetic field. In a DC-DC converter, it smooths out the output current. * **Magnetic Shielding:** The "closed" magnetic circuit ensures that the magnetic flux stays within the component. This prevents the inductor from interfering with nearby sensitive components (like microcontrollers or RF circuits). * **Low Profile (1.0mm):** The "10" in the part number signifies the 1.0mm height, making it ideal for ultra-thin devices like smartphones, wearables, and thin IoT modules. --- ### 4. Common Applications Due to its small size and shielded nature, the SD3110-101-R is typically found in: 1. **DC-DC Converters:** Buck, Boost, and SEPIC converters. 2. **Portable Electronics:** Mobile phones, digital cameras, and tablets. 3. **LED Drivers:** Providing constant current for backlighting or flashlights. 4. **Battery Powered Devices:** Where high efficiency and space-saving are priorities. ---