The **XFWICS1210-R18** is an electronic component primarily identified as a **Surface Mount Device (SMD) Wire-Wound Chip Inductor**. It is part of the 1210 series, which refers to its physical dimensions in inches (0.12 x 0.10 inches). --- ### 1. Key Technical Specifications Based on the standard nomenclature for this part number, here are the technical characteristics: | Property | Value/Description | | :--- | :--- | | **Component Type** | Wire-Wound Chip Inductor | | **Package Size** | 1210 (EIA) / 3225 (Metric) | | **Inductance** | 0.18 µH (R18) | | **Tolerance** | Usually ±5% (J) or ±10% (K) | | **Mounting Type** | Surface Mount (SMD) | | **Material** | Ceramic core with copper winding | --- ### 2. Breakdown of the Part Number The alphanumeric code provides specific details about the component's construction: * **XFWI**: Typically represents the manufacturer's series prefix (XFMRS or similar). * **CS**: Indicates a "Ceramic Series" or "Chip Standard" construction. * **1210**: The physical footprint (3.2mm x 2.5mm). * **R18**: The inductance value. The "R" acts as a decimal point, meaning **0.18 microhenries (µH)**. --- ### 3. Features and Applications #### Features * **High Q-Factor:** Ceramic cores provide excellent performance at high frequencies. * **Stable Inductance:** Maintains values across a wide temperature range. * **Miniature Size:** Ideal for high-density PCB layouts. #### Common Applications 1. **RF Circuits:** Used in impedance matching and resonance circuits for high-frequency communication. 2. **Filtering:** Used in EMI/RFI suppression to clean up signals in power lines or data lines. 3. **Signal Decoupling:** Isolating different stages of an electronic circuit to prevent interference. --- ### 4. Dimensions (1210 Package) The standard dimensions for a 1210 package are as follows: | Dimension | Millimeters (mm) | Inches (in) | | :--- | :--- | :--- | | **Length (L)** | 3.20 ± 0.2 | 0.126 | | **Width (W)** | 2.50 ± 0.2 | 0.098 | | **Height (H)** | ~2.20 | ~0.087 |