The **SD3814-R47-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Bussmann)**. It is part of the SD3814 series, designed specifically for applications where space is limited and efficiency is critical. --- ### 1. Technical Specifications Below are the key electrical and physical characteristics of the SD3814-R47-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.026 Ω (Typical) | | **Saturation Current ($I_{sat}$)** | 4.02 A | | **RMS Current ($I_{rms}$)** | 2.58 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 4.0mm x 4.0mm x 1.4mm | | **Shielding** | Shielded (Magnetic) | --- ### 2. Key Features * **Low Profile:** With a maximum height of 1.4mm, it is ideal for ultra-thin electronic devices. * **Magnetic Shielding:** The component is shielded to minimize Electromagnetic Interference (EMI), which is crucial for densely packed circuit boards. * **High Power Density:** It handles high saturation currents relative to its small footprint. * **Ferrite Core:** Utilizes a ferrite core material for high efficiency and low core losses at high frequencies. --- ### 3. Common Applications This inductor is typically used in DC-DC converter circuits for power management. Specific applications include: 1. **Mobile Electronics:** Smartphones, tablets, and handheld gaming consoles. 2. **Computing:** Laptops, SSD power rails, and peripheral cards. 3. **IoT Devices:** Small sensors and wearable technology requiring efficient power regulation. 4. **Buck/Boost Converters:** Serving as the energy storage element in switching regulators. --- ### 4. Part Number Breakdown Understanding the Eaton nomenclature helps in identifying variants: * **SD:** Series Prefix (Standard Inductor) * **3814:** Physical Dimensions (Approx. 3.8mm x 3.8mm footprint, 1.4mm height) * **R47:** Inductance Value ($0.47$ µH) * **-R:** RoHS Compliant