The part number **0603CS-R10XGRW** refers to a high-frequency, wire-wound surface mount (SMD) inductor typically manufactured by **Coilcraft**. This specific series is known for its high Q-factors and excellent current-handling capabilities in a small footprint. --- ### 1. Part Number Breakdown The nomenclature provides specific details about the component's physical and electrical properties: | Segment | Value | Meaning | | :--- | :--- | :--- | | **0603** | Size Code | Industry standard 0603 package (approx. 1.6 x 0.8 mm). | | **CS** | Series | Ceramic core, wire-wound inductor series. | | **R10** | Inductance | **100 nH** (R = decimal point; 10 = 0.10 $\mu$H). | | **X** | Tolerance | **±5%** tolerance code. | | **G** | Termination | Gold over nickel over moly-manganese (RoHS compliant). | | **R** | Packaging | 7-inch reel (plastic carrier tape). | | **W** | Testing | Standard commercial testing. | --- ### 2. Technical Specifications The "CS" series uses a ceramic body which provides exceptional stability and low losses at high frequencies. * **Inductance:** 100 nH * **Tolerance:** ±5% * **Quality Factor (Q min):** ~60 at 350 MHz * **Self-Resonant Frequency (SRF):** Typical 1200 MHz (1.2 GHz) * **DC Resistance (DCR max):** ~0.46 Ohms * **Maximum Current (Irms):** ~400 mA * **Operating Temperature:** -40°C to +125°C --- ### 3. Key Features and Construction * **Wire-wound Design:** Unlike multilayer inductors, the wire-wound construction allows for much lower DC resistance and significantly higher Q-factors. * **Ceramic Core:** Provides high thermal stability and a high self-resonant frequency, making it ideal for RF applications. * **Small Footprint:** The 0603 size (1608 Metric) is a balance between ease of manufacturing (pick-and-place) and space-saving for mobile devices. --- ### 4. Common Applications This inductor is designed for high-frequency RF circuits where signal integrity and minimal power loss are critical: 1. **Impedance Matching:** Used in the front-end of RF transceivers. 2. **Filter Networks:** Low-pass, high-pass, and band-pass filters for wireless communication. 3. **VCOs:** Voltage Controlled Oscillators requiring stable inductance. 4. **Bluetooth/WLAN:** Signal conditioning in 2.4GHz and sub-GHz modules. ---