The **SD53-100-R** is a high-performance, low-profile surface mount (SMD) power inductor manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). It is widely used in DC-DC converters and power management circuits. --- ### 1. Key Technical Specifications The part number "SD53-100-R" provides specific data regarding its electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 10.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.0454 Ω (Typical) | | **Saturation Current ($I_{sat}$)** | 1.83 Amps | | **RMS Current ($I_{rms}$)** | 1.92 Amps | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | --- ### 2. Physical Characteristics * **Dimensions:** The "53" in the series name refers to the footprint size, approximately **5.2mm x 5.2mm** with a height of **3.0mm**. * **Shielding:** It features a ferrite drum core and ring core construction. This magnetic shielding minimizes Electromagnetic Interference (EMI), making it suitable for densely packed circuit boards. * **Construction:** It is designed for pick-and-place automation and is compatible with lead-free infrared (IR) reflow soldering processes. --- ### 3. Applications The SD53 series is designed for efficiency in power conversion. Common use cases include: * **DC-DC Converters:** Buck, Boost, and SEPIC topologies. * **Consumer Electronics:** Laptops, tablets, and handheld GPS units. * **Power Management:** Regulating voltage for microprocessors and FPGAs. * **Battery Powered Devices:** High efficiency ensures longer battery life. --- ### 4. Part Number Breakdown * **SD:** Series name (Shielded Drum Inductor). * **53:** Size code (Approx 5.2mm x 3.0mm). * **100:** Inductance value in Microhenries ($\mu H$). The first two digits are significant figures, the third is the multiplier (10 x $10^0$ = 10). * **R:** RoHS compliant.