The **SD7030-471-R** is a high-performance, shielded surface-mount (SMD) power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the SD7030 series, designed for applications requiring high power density and low electromagnetic interference (EMI). --- ### ## Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 470 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 1.340 Ohms (Typical) | | **RMS Current ($I_{rms}$)** | 0.44 Amps | | **Saturation Current ($I_{sat}$)** | 0.50 Amps | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 7.0mm x 7.0mm x 3.0mm | --- ### ## Key Features 1. **Magnetic Shielding:** The "SD" series features a ferrite drum core with a magnetic epoxy resin shield. This significantly reduces EMI, making it suitable for noise-sensitive circuits. 2. **Low Profile:** With a maximum height of 3.0mm, it is ideal for compact consumer electronics and thin PCBs. 3. **High Power Density:** Despite its small footprint, it handles relatively high saturation currents for its size. 4. **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and meets RoHS environmental standards. --- ### ## Typical Applications Due to its high inductance (470 µH), this part is commonly used in power management circuits where high voltage conversion or significant filtering is required: * **DC-DC Converters:** Buck, Boost, and SEPIC topologies. * **LED Drivers:** Providing constant current for lighting solutions. * **Battery Powered Devices:** Used in handheld electronics to maximize efficiency. * **Filtering:** Used in power supply lines to suppress high-frequency noise. --- ### ## Physical Dimensions The **7030** designation refers to the metric dimensions of the component footprint: * **Length/Width:** ~7.0 mm x 7.0 mm * **Height:** 3.0 mm (Max)