The **SD10-150-R** is a high-performance, low-profile power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the SD series, which is specifically designed for surface-mount applications where space and efficiency are critical. --- ### 1. Technical Specifications The following table highlights the core electronic characteristics of the SD10-150-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 15.0 µH | | **Tolerance** | ±20% | | **Rated Current ($I_{rms}$)** | 1.08 Amps (Typical) | | **Saturation Current ($I_{sat}$)** | 0.94 Amps | | **DC Resistance (DCR)** | 0.203 Ω (Typical) | | **Self-Resonant Frequency** | ~28 MHz | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Construction The "SD10" designation refers to the physical footprint and height of the component. * **Shielding:** It is a **shielded** inductor. This means it uses a ferrite drum core with a ferrite sleeve/ring to contain the magnetic flux, reducing Electromagnetic Interference (EMI) with nearby components. * **Dimensions:** * **Length/Width:** 5.2 mm x 5.2 mm * **Height:** 1.0 mm (Max) — The "10" in SD10 indicates the ~1.0mm height profile. * **Termination:** Lead-free, RoHS compliant matte tin over copper. --- ### 3. Key Electronic Functions The SD10-150-R performs three primary roles in electronic circuits: 1. **Energy Storage:** In DC-DC converters (Buck, Boost, or SEPIC), it stores energy in its magnetic field during the "on" cycle and releases it during the "off" cycle. 2. **Filtering:** It acts as a low-pass filter, smoothing out high-frequency ripple current from switching power supplies to provide a stable DC output. 3. **EMI Suppression:** Because it is shielded, it prevents high-frequency noise from radiating and affecting sensitive analog or communication signals. --- ### 4. Common Applications Due to its low profile (1.0mm), this part is commonly found in: * **Mobile Devices:** Smartphones and tablets where board height is restricted. * **Wearables:** Smartwatches and fitness trackers. * **Computer Peripherals:** SSDs (Solid State Drives) and portable hard drives. * **LED Drivers:** Small-scale lighting circuits.