The **SD52-470-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Coiltronics/Bussmann)**. It is part of the SD52 series, which is specifically designed for high-density surface-mount applications. --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the SD52-470-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 47.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.285 Ω (Maximum) | | **RMS Current ($I_{rms}$)** | 0.81 Amps | | **Peak Current ($I_{sat}$)** | 0.87 Amps | | **Core Material** | Ferrite | | **Shielding** | Magnetically Shielded | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Dimensions The "52" in the part number refers to the package size, while the "R" indicates RoHS compliance. | Feature | Dimension (mm) | | :--- | :--- | | **Length** | 5.2 mm | | **Width** | 5.2 mm | | **Height (Max)** | 2.0 mm | --- ### 3. Key Features & Benefits * **Magnetically Shielded:** The component is shielded to minimize Electromagnetic Interference (EMI), making it ideal for noise-sensitive circuits. * **Low Profile:** With a maximum height of 2.0 mm, it is suitable for slim electronic devices like smartphones or tablets. * **Ferrite Core:** Provides high efficiency and high saturation current levels relative to its size. * **RoHS Compliant:** Lead-free and environmentally friendly. --- ### 4. Common Applications The SD52-470-R is typically used in power management circuits where space is a premium: * **DC-DC Converters:** Used as energy storage elements in buck, boost, or SEPIC converters. * **Portable Electronics:** Tablets, digital cameras, and handheld gaming consoles. * **Computing:** HDD power supplies and VRM (Voltage Regulator Modules) for CPUs. * **Battery Powered Systems:** To ensure efficient power delivery and extend battery life. ---