The **SD3814-101-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the SD3814 series, which is designed for applications requiring compact footprints and high power density. --- ### ## Technical Specifications The part number follows a specific nomenclature. In this case, **"101"** represents the inductance value, and **"R"** indicates RoHS compliance. | Parameter | Value | | :--- | :--- | | **Inductance** | 100 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 1.82 Ω (Typ) | | **Rated Current ($I_{rms}$)** | 0.42 Amps | | **Saturation Current ($I_{sat}$)** | 0.52 Amps | | **Dimensions** | 3.8mm x 3.8mm x 1.4mm | | **Shielding** | Magnetically Shielded | --- ### ### Key Electronic Characteristics 1. **Magnetic Shielding:** The component is shielded, which minimizes electromagnetic interference (EMI). This is critical for dense PCB layouts where components are placed close to sensitive analog circuits or communication modules. 2. **Low Profile:** With a height of only **1.4mm**, it is ideal for ultra-thin electronics like smartphones, tablets, and wearables. 3. **Ferrite Core Construction:** The use of a ferrite core ensures high efficiency and low core losses at high frequencies. 4. **Surface Mount Design (SMD):** It is designed for automated pick-and-place assembly, featuring robust soldering pads. --- ### ### Common Applications The SD3814-101-R is typically found in power management stages of portable devices: * **DC-DC Converters:** Used in Buck, Boost, or SEPIC topologies to store energy. * **LED Drivers:** Providing constant current for backlight displays. * **Battery Powered Devices:** Helping to regulate voltage from Li-ion batteries to internal chips (CPUs, Sensors). * **Noise Filtering:** Acting as a low-pass filter to smooth out ripples in power lines. --- ### ### Equivalent Logic (Part Number Breakdown) To understand variations of this part, use this logic: ```text SD 38 14 - 101 - R | | | | | | | | | +-- RoHS Compliant | | | +------- Inductance (10 + 1 zero = 100uH) | | +------------- Height (1.4mm) | +------------------ Footprint (3.8mm x 3.8mm) +----------------------- Series Name ```