The **SD3114-101-R** is a low-profile, shielded surface-mount (SMD) power inductor. It is part of the SD3114 series manufactured by **Eaton (formerly Cooper Bussmann)**. These inductors are specifically designed for applications where space is limited and electromagnetic interference (EMI) must be minimized. --- ### ## Technical Specifications Below are the key electrical and physical characteristics of the SD3114-101-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 100 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR) Max** | 4.14 Ω | | **Irms (Rated Current)** | 0.31 A (310 mA) | | **Isat (Saturation Current)** | 0.35 A (350 mA) | | **Shielding** | Shielded (Magnetic) | | **Operating Temperature** | -40°C to +125°C | | **Dimensions (L x W x H)** | 3.1mm x 3.1mm x 1.4mm | --- ### ### Key Electronic Features 1. **Magnetic Shielding:** The component is shielded, which means the magnetic flux is contained within the core. This prevents the inductor from interfering with nearby sensitive components on the PCB and reduces audible noise. 2. **Ferrite Core Material:** It utilizes a ferrite drum core with a ferrite sleeve. Ferrite provides high efficiency and low core losses at high frequencies. 3. **Low Profile (1.4mm):** The "14" in the part number refers to its maximum height of 1.4mm, making it ideal for ultra-thin electronics like smartphones or wearables. 4. **High Power Density:** Despite its small footprint, it handles relatively high saturation currents for its size. --- ### ### Typical Applications The SD3114-101-R is commonly found in circuits requiring DC-to-DC conversion and signal filtering: * **Buck/Boost Converters:** Used as the energy storage element in power supplies. * **LED Drivers:** Providing constant current for backlight displays. * **Portable Devices:** Smartphones, tablets, and digital cameras. * **Noise Filtering:** Used in LC filters to smooth out ripple voltage in power lines. --- ### ### Component Number Breakdown `SD3114 - 101 - R` * **SD:** Series name (Shielded Drum). * **31:** Footprint size (approx. 3.1mm x 3.1mm). * **14:** Maximum height (1.4mm). * **101:** Inductance code ($10 \times 10^1$ = 100 µH). * **R:** RoHS compliant.