The **SD6030-4R2-R** is a high-performance, low-profile power inductor commonly used in DC-DC converter applications. It belongs to the SD6030 series, known for its shielded construction and high energy storage density. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the SD6030-4R2-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 4.2 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 22.0 mΩ (Typical) | | **Saturation Current ($I_{sat}$)** | 3.50 A | | **RMS Current ($I_{rms}$)** | 3.24 A | | **Operating Temperature** | -40°C to +125°C | | **Dimensions (LxWxH)** | 6.0mm x 6.0mm x 3.0mm | | **Shielding** | Magnetically Shielded | --- ### 2. Key Components & Construction * **Core Material:** Typically uses a Ferrite drum core. Ferrite provides high permeability and low eddy current losses, making it ideal for high-frequency switching. * **Magnetic Shielding:** The component is enclosed in a magnetic resin or ferrite sleeve. This prevents EMI (Electromagnetic Interference) from leaking and affecting nearby sensitive components on the PCB. * **Winding:** Copper wire is wound around the core. The "R2" in the part number signifies the specific inductance value (4.2), and the design ensures low DCR to minimize power loss via heat. --- ### 3. Application Use-Cases This specific inductor is designed for power management in compact electronics: 1. **Buck/Boost Converters:** Used as the energy storage element in voltage regulators. 2. **Mobile Electronics:** Ideal for smartphones, tablets, and handheld devices due to its 3.0mm low-profile height. 3. **Computer Peripherals:** Found in SSDs, graphic cards, and motherboard power phases. 4. **LED Drivers:** Provides stable current regulation for lighting circuits. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **SD:** Series name (Shielded Drum). * **6030:** Physical dimensions (6.0mm x 6.0mm x 3.0mm). * **4R2:** Inductance value (4.2 µH). The 'R' acts as the decimal point. * **-R:** RoHS compliant (Lead-free).