The **SCI0805S-R47F** is a specific surface-mount electronic component, primarily categorized as a **Wire-Wound Chip Inductor**. It is designed for high-frequency applications where stability and high Q-factors are required. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify its physical and electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **SCI** | Series Type | Standard Chip Inductor (Wire-wound) | | **0805** | Case Size | Imperial size 0805 (approx. 2.0 x 1.25 mm) | | **S** | Material/Process | Often denotes a Standard or Specialized ceramic core | | **R47** | Inductance Value | **0.47 µH** (R denotes the decimal point) | | **F** | Tolerance | **±1%** (High precision) | --- ### 2. Technical Specifications While exact specs can vary slightly by manufacturer (such as Signal Construct or Chilisin), the standard parameters for an R47F 0805 inductor are generally: * **Inductance:** 470 nH (0.47 µH) * **Tolerance:** ±1% (Precision grade) * **Quality Factor (Q):** Typically 45–60 (measured at ~100 MHz) * **Self-Resonant Frequency (SRF):** Usually above 500 MHz * **DC Resistance (DCR):** Low (typically < 1.0 Ω) * **Rated Current:** Generally between 200mA and 500mA depending on the specific series rating. --- ### 3. Key Construction Features 1. **Ceramic Core:** Provides excellent thermal stability and a high SRF, making it ideal for RF (Radio Frequency) applications. 2. **Wire-Wound Technology:** Offers significantly higher Q-factors and lower DC resistance compared to multilayer inductors. 3. **Encapsulation:** Often coated with an epoxy resin to protect the fine copper wire from mechanical stress and environmental factors. --- ### 4. Common Applications Due to its high precision (1% tolerance) and 0805 form factor, this part is commonly used in: * **RF Tuning Circuits:** Matching networks for antennas. * **Filters:** Low-pass, high-pass, and band-pass filters in communication devices. * **Oscillators:** Providing stable inductance for frequency generation. * **Mobile Communication:** Used in smartphones, Wi-Fi modules, and Bluetooth transceivers. --- ### 5. Footprint Information The **0805 (2012 Metric)** package is a standard size that is easily handled by most Pick-and-Place SMT machines. | Dimension | Metric (mm) | Imperial (inches) | | :--- | :--- | :--- | | **Length** | 2.00 ± 0.20 | 0.079 ± 0.008 | | **Width** | 1.25 ± 0.20 | 0.049 ± 0.008 | | **Height** | 1.20 ± 0.20 | 0.047 ± 0.008 |