The **SD52-680-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the SD52 series, which is designed for applications requiring high power density and magnetic shielding. --- ## 1. Technical Specifications The "680" in the part number indicates the inductance value, while the "R" signifies RoHS compliance. | Parameter | Specification | | :--- | :--- | | **Inductance** | 68 µH | | **Tolerance** | ±20% | | **Rated Current (Irms)** | 0.73 Amps | | **Saturation Current (Isat)** | 0.82 Amps | | **DC Resistance (DCR)** | 0.443 Ohms (Typ.) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 5.2mm x 5.2mm x 2.0mm | --- ## 2. Key Features * **Magnetically Shielded:** The drum core is enclosed in a ferrite sleeve, which minimizes Electromagnetic Interference (EMI) and protects sensitive surrounding components. * **Low Profile:** With a height of only 2.0mm, it is ideal for ultra-thin consumer electronics like smartphones or tablets. * **Ferrite Core Material:** Ensures high efficiency and low core losses at high frequencies. * **Surface Mount (SMD):** Designed for automated pick-and-place assembly. --- ## 3. Common Applications The SD52-680-R is typically used in power management circuits where space is limited: 1. **DC-DC Converters:** Used as an energy storage element in buck (step-down) or boost (step-up) converters. 2. **Battery Powered Devices:** Ideal for laptops, handheld medical devices, and digital cameras due to its small footprint. 3. **LED Drivers:** Provides stable current regulation for backlighting and illumination. 4. **Computer Peripherals:** Used in hard disk drives (HDD) and solid-state drives (SSD) power rails. --- ## 4. Part Number Breakdown Understanding the nomenclature helps in identifying similar components in the series: ```text SD 52 - 680 - R | | | | | | | +-- RoHS Compliant | | +---------- Inductance Value (68 + 0 zeros = 68µH) | +----------------- Dimensions (5.2mm x 5.2mm) +---------------------- Series Name (Shielded Drum) ```