## Technical Overview: SC1206-R47 The **SC1206-R47** is a surface-mount (SMD) power inductor. The part number itself contains specific encoded information regarding its physical size and electrical properties. --- ### 1. Part Number Breakdown The nomenclature follows industry standards for passive components: | Segment | Meaning | Description | | :--- | :--- | :--- | | **SC** | Series Prefix | Often denotes a shielded or standard chip inductor series. | | **1206** | Case Size | Dimensions in inches (0.12" x 0.06") or metric 3216. | | **R47** | Inductance Value | "R" acts as a decimal point. $0.47 \mu H$ (microhenries). | --- ### 2. Key Specifications While specific manufacturers (like Signal Transformer or Pulse) may have slight variations, a typical **SC1206-R47** features the following characteristics: * **Inductance:** $0.47 \mu H$ * **Tolerance:** Typically $\pm 20\%$ (M) or $\pm 10\%$ (K). * **DC Resistance (DCR):** Very low (usually in the range of $0.1\Omega$ to $0.5\Omega$) to minimize power loss. * **Saturation Current ($I_{sat}$):** The maximum current before inductance drops; usually ranges from $300mA$ to $800mA$ depending on the specific construction. * **Operating Temperature:** Generally $-40^\circ C$ to $+125^\circ C$. --- ### 3. Construction and Materials These components are generally built using one of two technologies: 1. **Wire-wound:** A copper wire coiled around a ceramic or ferrite core, providing high Q-factors and current handling. 2. **Multilayer:** Layers of ferrite and conductive paste fired together, allowing for a smaller profile and better magnetic shielding. --- ### 4. Common Applications Due to its small 1206 footprint and low inductance, it is frequently used in: * **DC-DC Converters:** For voltage regulation in handheld devices. * **EMI Filtering:** To suppress high-frequency noise in power lines. * **Decoupling:** Providing "clean" power to high-speed integrated circuits. * **RF Circuits:** Matching networks or signal chokes. --- ### 5. Physical Dimensions (1206 Package) | Dimension | Imperial (in) | Metric (mm) | | :--- | :--- | :--- | | **Length (L)** | $0.126 \pm 0.008$ | $3.2 \pm 0.2$ | | **Width (W)** | $0.063 \pm 0.008$ | $1.6 \pm 0.2$ | | **Height (H)** | Varies by Model | $0.6$ to $1.6$ |