The part number **0603CS-R10XGLU** refers to a high-frequency, wire-wound surface mount (SMD) inductor manufactured by **Coilcraft**. This specific component is part of the 0603CS series, known for high Q factors and tight tolerances in RF applications. ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the technical specifications: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **0603** | Case Size | 0603 (1608 Metric) | | **CS** | Series Type | Ceramic chip inductor (Wire-wound) | | **R10** | Inductance Value | 100 nH (R denotes decimal point in $\mu$H) | | **X** | Tolerance | $\pm 5\%$ (J is 5%, X is often a specialized variant/standard) | | **G** | Termination | Gold over nickel (RoHS compliant) | | **L** | Packaging | Tape & Reel (typically 7" reel) | | **U** | Environmental | Lead-free / RoHS compliant | --- ### 2. Key Technical Specifications The **0603CS-R10** is designed for performance in the VHF and UHF frequency ranges. * **Inductance:** 100 nH * **Tolerance:** $\pm 5\%$ (Standard for the G/J class) * **Quality Factor (Q):** Minimum 50 at 150 MHz * **Self-Resonant Frequency (SRF):** Typical 1200 MHz (1.2 GHz) * **DCR (Direct Current Resistance):** Maximum 0.58 Ohms * **Current Rating (Irms):** ~400 mA * **Operating Temperature:** -40°C to +125°C --- ### 3. Physical Characteristics * **Construction:** Ceramic core with a precision wire winding. * **Dimensions:** Approximately $1.8 \times 1.12 \times 1.02$ mm. * **Durability:** The wire-wound construction provides significantly higher Q factors and current handling compared to multilayer ferrites of the same size. --- ### 4. Common Applications Due to its high SRF and Q factor, this inductor is primarily used in: 1. **RF Matching Networks:** Impedance matching for antennas in cellular or Wi-Fi circuits. 2. **Filter Circuits:** Low-pass, high-pass, and band-pass filters for signal processing. 3. **VCOs:** Voltage Controlled Oscillators requiring stable inductance. 4. **Bluetooth/WLAN Modules:** High-frequency communication hardware. ---