## Technical Overview of SD7030-680-R The **SD7030-680-R** is a high-performance, shielded surface-mount (SMD) power inductor. It is part of the SD7030 series manufactured by **Eaton (formerly Cooper Bussmann)**. These components are primarily used for power management and noise filtering in electronic circuits. --- ### 1. Key Technical Specifications The model number provides specific details about its electrical properties: | Parameter | Specification | | :--- | :--- | | **Inductance** | 68 µH (Microhenries) | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | ~0.211 Ω (Typical) | | **Rated Current (Irms)** | ~1.12 A | | **Saturation Current (Isat)** | ~1.10 A | | **Shielding** | Ferrite Drum Core (Magnetically Shielded) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Physical Characteristics The component is designed for automated assembly and durability. * **Package Size:** 7.0mm x 7.0mm footprint with a 3.0mm height profile. * **Construction:** Ferrite core construction which provides a high saturation point and low core losses. * **Shielding:** The magnetic shielding minimizes Electromagnetic Interference (EMI), making it safe to place near sensitive components on a PCB. * **Termination:** Lead-free (RoHS compliant) matte tin over copper. --- ### 3. Application Use Cases The SD7030-680-R is commonly found in the following circuit types: 1. **DC-DC Converters:** Acts as an energy storage element in buck (step-down) or boost (step-up) converters. 2. **Filtering:** Used in LC filters to smooth out ripple current from switching power supplies. 3. **Consumer Electronics:** Found in laptops, LED drivers, and handheld GPS units where space and efficiency are critical. 4. **Battery Powered Devices:** Due to its low DCR, it helps maximize battery life by reducing heat dissipation. --- ### 4. Part Number Breakdown * **SD7030:** Series name (7.0 x 7.0 x 3.0 mm dimensions). * **680:** Inductance code (68 followed by 0 zeros = **68 µH**). * **R:** RoHS compliant designation. ---