The **SD10-151-R** is a high-performance, low-profile power inductor from the SD series, manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). It is commonly used in DC-DC converters and power management circuits. --- ### 1. Technical Specifications The following table summarizes the key electrical and physical characteristics of the SD10-151-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 150 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 1.488 Ω (Typical) | | **Rated Current (Irms)** | 0.316 A | | **Saturation Current (Isat)** | 0.355 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | SMD (Surface Mount Device) | | **Dimensions** | 5.2mm x 5.2mm x 1.0mm | --- ### 2. Key Features and Design * **Low Profile:** The "10" in the series name signifies a maximum height of approximately 1.0mm, making it ideal for ultra-thin electronics like smartphones or wearables. * **Magnetic Shielding:** The part is ferrite-shielded, which minimizes Electromagnetic Interference (EMI) and prevents the magnetic field from affecting surrounding components. * **Ferrite Core:** Utilizes a high-frequency ferrite core material that provides low core losses, enhancing the efficiency of the power supply. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and compliant with RoHS standards. --- ### 3. Common Applications Due to its small footprint and electrical properties, the SD10-151-R is typically found in: 1. **Buck/Boost Converters:** Used for voltage regulation in battery-powered devices. 2. **LED Drivers:** Providing stable current to lighting circuits. 3. **Portable Electronics:** Digital cameras, tablets, and handheld GPS units. 4. **LCD Displays:** Used in the biasing circuitry for panels. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **SD:** Series name (Shielded Drum Inductor). * **10:** Physical size/profile (approx. 1.0mm height). * **151:** Inductance code ($15 \times 10^1 = 150$ µH). * **R:** RoHS compliant.