The **SD53-680-R** is a high-performance, low-profile, shielded drum core power inductor manufactured by **Eaton (formerly Cooper Bussmann/Coiltronics)**. It is part of the SD53 series, designed for compact electronic applications requiring efficient power management. --- ## 1. Technical Specifications The part number follows a specific nomenclature where **"680"** represents the inductance value and **"R"** indicates RoHS compliance. | Parameter | Value | | :--- | :--- | | **Inductance** | 68.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.505 Ω (Typical) | | **Rated Current (Irms)** | 0.61 Amps | | **Saturation Current (Isat)** | 0.63 Amps | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | --- ## 2. Key Physical Features * **Magnetically Shielded:** The drum core is enclosed in a ferrite sleeve. This minimizes Electromagnetic Interference (EMI), making it ideal for high-density boards where components are close together. * **Low Profile:** The "53" in the series name indicates its dimensions (approx. 5.2mm x 5.2mm x 3.0mm), making it suitable for slim portable electronics. * **Construction:** Ferrite drum core with copper wire winding, finished with a rugged epoxy coating for environmental protection. --- ## 3. Common Applications Due to its shielding and power characteristics, the SD53-680-R is commonly used in: 1. **DC-DC Converters:** Buck, Boost, and SEPIC topologies. 2. **Portable Devices:** Smartphones, tablets, and handheld gaming consoles. 3. **Computer Peripherals:** Hard disk drives and SSD power rails. 4. **LED Lighting:** Driver circuits for constant current regulation. --- ## 4. Footprint & Mounting This is a **Surface Mount Device (SMD)**. Below is a representation of how the part is typically integrated into a PCB design: ```markdown Dimensions (Nominal): - Length: 5.20 mm - Width: 5.20 mm - Height: 3.00 mm (Max) ```