The **SD3112-101-R** is a high-performance, low-profile, shielded surface-mount (SMD) power inductor. It is part of the SD3112 series manufactured by Eaton (formerly Coiltronics/Bussmann). ### 1. General Specifications The following table summarizes the key electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 100 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 3.51 Ω (Typical) / 4.14 Ω (Max) | | **Saturation Current ($I_{sat}$)** | 0.170 A (170 mA) | | **RMS Current ($I_{rms}$)** | 0.233 A (233 mA) | | **Shielding** | Magnetic Shielding (Low EMI) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Key Features * **Low Profile:** The "3112" designation indicates its small footprint (approx. 3.1mm x 3.1mm) and a very low height of only **1.2mm**. * **Magnetic Shielding:** The ferrite core construction minimizes Electromagnetic Interference (EMI), making it ideal for densely packed circuit boards near sensitive components. * **High Efficiency:** Designed for high power density and low core losses. * **RoHS Compliant:** The "-R" suffix indicates compliance with RoHS standards (Lead-free). --- ### 3. Typical Applications The SD3112-101-R is commonly used in portable electronics where space is a premium. Specific use cases include: * **DC-DC Converters:** Buck, Boost, and SEPIC topologies. * **Mobile Devices:** Smartphones, tablets, and wearable technology. * **LED Drivers:** Small-scale lighting circuits. * **LCD Displays:** Used in the power management units of thin-film displays. --- ### 4. Footprint and Mounting The device features a dual-pad surface mount design. ```markdown Dimensions (Approximate): - Length: 3.1 mm - Width: 3.1 mm - Height: 1.2 mm ``` ---