The **SD14-151-R** is a high-power density, shielded drum core inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the SD14 series, designed for applications where space is limited and electromagnetic interference (EMI) must be minimized. --- ### 1. Key Technical Specifications The model number **SD14-151-R** contains specific data about its performance characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 150 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.985 Ω (Typical) | | **Saturation Current ($I_{sat}$)** | 0.402 Amps | | **RMS Current ($I_{rms}$)** | 0.441 Amps | | **Operating Temperature** | -40°C to +125°C | | **Size / Dimension** | 5.20mm x 5.20mm x 1.45mm | --- ### 2. Physical Construction & Design * **Shielded Drum Core:** The inductor features a ferrite drum core with a magnetic shield. This design traps the magnetic flux within the component, preventing interference with neighboring components on the PCB. * **Low Profile:** The "14" in the series name indicates a maximum height of approximately **1.45mm**, making it ideal for ultra-thin electronics like smartphones or wearables. * **Surface Mount (SMD):** It is designed for automated pick-and-place assembly. --- ### 3. Common Applications The SD14-151-R is typically used in power management circuits where voltage needs to be stepped up or down efficiently. * **DC-DC Converters:** Buck, Boost, and SEPIC topologies. * **Battery Powered Devices:** Digital cameras, mobile phones, and handheld instruments. * **LED Drivers:** Providing constant current for lighting applications. * **Computer Peripherals:** Localized power regulation on motherboards or expansion cards. --- ### 4. Part Number Breakdown Understanding the Eaton/Coiltronics nomenclature: | Segment | Meaning | | :--- | :--- | | **SD** | Series Prefix (Shielded Drum) | | **14** | Dimensional size (1.45mm height) | | **151** | Inductance Code (15 followed by 1 zero = 150µH) | | **-R** | RoHS Compliant / Lead-Free | ---