The part number **0603CS-R11XGLU** 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. --- ### 1. Part Number Breakdown The alphanumeric code provides specific details about the component's physical and electrical characteristics: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **0603** | Case Size | 0.06 x 0.03 inches (1.6 x 0.8 mm) | | **CS** | Series Type | Ceramic core, wire-wound inductor | | **R11** | Inductance Value | 110 nH (R denotes decimal, 11 = 110) | | **X** | Tolerance | ±10% | | **G** | Termination | Gold over nickel (RoHS compliant) | | **L** | Testing/Packaging | Standard screening | | **U** | Packaging | Tape and reel (7" reel) | --- ### 2. Key Technical Specifications Below are the typical electrical parameters for the 110 nH variant in this series: * **Inductance:** 110 nH * **Tolerance:** ±10% * **Quality Factor (Q min):** 50 at 250 MHz * **Self-Resonant Frequency (SRF typ):** 1750 MHz * **DC Resistance (DCR max):** 0.48 Ohms * **Current Rating (Irms):** 400 mA * **Operating Temperature:** -40°C to +125°C --- ### 3. Physical Construction and Benefits * **Wire-Wound Technology:** Unlike multilayer inductors, the wire-wound construction allows for much higher Q factors and lower DC resistance, making it more efficient for RF signals. * **Ceramic Core:** Provides excellent thermal stability and high-frequency performance. * **Small Footprint:** The 0603 (1608 metric) size is ideal for high-density PCB designs in portable electronics. --- ### 4. Typical Applications This component is designed for RF and wireless communication circuits where signal integrity and low loss are critical: * **Impedance Matching:** Used in the front-end of RF transceivers. * **Filters:** High-pass, low-pass, and band-pass filter circuits. * **Oscillators:** Frequency-determining elements in VCOs (Voltage Controlled Oscillators). * **Mobile Hardware:** Smartphones, Wi-Fi modules, and Bluetooth devices. ---