The **0603CS-R10X_L** is a specific part number for a surface-mount (SMD) wire-wound chip inductor manufactured by **Coilcraft**. This component is widely used in high-frequency applications due to its high Quality (Q) factor and stability. --- ## 1. Part Number Breakdown The part number follows a specific nomenclature that describes its physical and electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **0603** | Case Size | EIA standard dimensions (0.06 x 0.03 inches or 1.6 x 0.8 mm). | | **CS** | Series Type | Ceramic core, wire-wound construction. | | **R10** | Inductance Value | R represents the decimal. 0.10 µH or **100 nH**. | | **X** | Tolerance | Typically ±5% (J) or ±2% (G); 'X' can be a specific tolerance code. | | **_L** | Termination | RoHS compliant tin-silver-over-copper terminations. | --- ## 2. Key Specifications The 0603CS series is designed for RF (Radio Frequency) circuits. Here are the typical electrical parameters for the **100 nH** (R10) variant: | Parameter | Value | | :--- | :--- | | **Inductance** | 100 nH @ 150 MHz | | **Q Factor (Minimum)** | 50 @ 500 MHz | | **Self-Resonant Frequency (SRF)** | 1600 MHz (Typical) | | **DC Resistance (DCR)** | 0.58 Ohms (Max) | | **Current Rating (IDC)** | 400 mA | | **Operating Temperature** | -40°C to +125°C | --- ## 3. Construction & Features ### Wire-Wound Technology Unlike multilayer inductors, the **CS series** uses a wire-wound construction on a ceramic core. * **Benefits:** Lower DC resistance and much higher Q factors. * **Precision:** Provides tighter tolerances than standard ceramic inductors. ### Physical Characteristics * **Core Material:** Ceramic (Non-magnetic), ensuring high frequency stability. * **Size:** Small footprint suitable for dense PCB layouts. * **Encapsulation:** Often features a clear "cap" or coating to protect the fine wire and allow for vacuum pick-and-place assembly. --- ## 4. Typical Applications This specific inductor is found in circuits where signal integrity and minimal energy loss at high frequencies are critical: 1. **RF Filters:** Band-pass and Low-pass filters. 2. **Impedance Matching:** Used in antenna circuits for smartphones and Wi-Fi modules. 3. **VCOs:** Voltage Controlled Oscillators. 4. **Bluetooth/WLAN:** High-frequency communication modules. ---