The **SD7030-151-R** is a high-performance, surface-mount (SMD) power inductor part of the SD7030 series, manufactured by **Eaton (formerly Cooper Bussmann)**. It is designed for high-power density applications where space is limited and electromagnetic interference (EMI) must be minimized. --- ### 1. Key Technical Specifications The part number "151" indicates its inductance value, while the "R" typically signifies RoHS compliance. | Parameter | Specification | | :--- | :--- | | **Inductance** | 150 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.510 Ω (Typical) | | **Rated Current (Irms)** | 0.61 Amps | | **Saturation Current (Isat)** | 0.72 Amps | | **Operating Temperature** | -40°C to +125°C | | **Dimensions** | 7.0mm x 7.0mm x 3.0mm | --- ### 2. Core Features * **Magnetically Shielded:** The component features a ferrite drum and ring core construction. This shielding significantly reduces EMI, making it safe to place near sensitive components. * **Low Profile:** With a height of only 3.0mm, it is ideal for thin electronic devices like tablets or handheld monitors. * **High Power Density:** Engineered to handle high current levels relative to its small physical footprint. * **Robust Construction:** Designed for automated pick-and-place assembly and infrared/vapor phase reflow soldering. --- ### 3. Typical Applications The SD7030-151-R is commonly found in circuits requiring energy storage and filtering: * **DC-DC Converters:** Used as the primary energy storage element in buck (step-down) or boost (step-up) converters. * **LED Drivers:** Providing stable current for lighting systems. * **Battery Powered Devices:** Essential for smartphones, laptops, and digital cameras to manage power efficiency. * **Computer Peripherals:** Used in SSDs, graphics cards, and motherboards for localized voltage regulation. --- ### 4. Decoding the Part Number The Eaton SD series follows a specific naming convention: * **SD:** Series name (Shielded Drum inductor). * **7030:** Dimensions (7.0mm width/length and 3.0mm height). * **151:** Inductance code ($15 \times 10^1 = 150 \text{ µH}$). * **R:** RoHS compliant.