The **SD14-R58-R** is a specific surface-mount power inductor manufactured by **Eaton (formerly Bussmann)**. It belongs to the **SD14 Series**, which is known for its low profile and high power density. --- ## 1. Component Overview The SD14-R58-R is a non-shielded, drum-core power inductor. It is designed for applications where space is limited but high current handling is required. ### Specifications Table | Parameter | Value | | :--- | :--- | | **Inductance** | 0.58 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 18.5 mΩ (Nominal) | | **Saturation Current ($I_{sat}$)** | 4.88 Amps | | **RMS Current ($I_{rms}$)** | 2.85 Amps | | **Package / Case** | 5.2mm x 5.2mm x 1.45mm | | **Operating Temperature** | -40°C to +125°C | --- ## 2. Key Features * **Low Profile:** The "14" in the part number indicates a maximum height of approximately 1.45mm, making it ideal for ultra-thin electronics like tablets and smartphones. * **Ferrite Core Material:** Provides high efficiency and low core losses at high switching frequencies. * **RoHS Compliant:** The "-R" suffix at the end of the part number indicates compliance with RoHS standards (Lead-free). * **High Current Density:** Capable of handling relatively high saturation currents compared to its physical size. --- ## 3. Typical Applications This inductor is primarily used in power management circuits where voltage needs to be stepped up or down. * **DC-DC Converters:** Buck, Boost, and SEPIC topologies. * **Portable Electronics:** Mobile phones, digital cameras, and GPS units. * **Computing:** Localized power supply for CPUs or peripherals on a motherboard. * **Battery Powered Devices:** Due to low DCR, it helps in maintaining high battery efficiency. --- ## 4. Part Number Breakdown Understanding the nomenclature helps in selecting substitutes: | Segment | Meaning | | :--- | :--- | | **SD** | Series Name (Shielded Drum - though SD14 is typically low-profile open/semi-shielded) | | **14** | Dimensional size (Approx 1.4mm height) | | **R58** | Inductance Value (R denotes decimal: 0.58 µH) | | **-R** | RoHS Compliant |