The part number **0603CS-R11XJRY** refers to a high-frequency wire-wound chip inductor manufactured by **Coilcraft**. This specific series is widely used in RF (Radio Frequency) circuits due to its high Q-factor and stable performance. ### 1. Part Number Breakdown Understanding each character in the part number provides the technical specifications of the component: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **0603** | Case Size | 0603 (EIA) / 1608 (Metric) | | **CS** | Series Type | Ceramic Core, High Q Inductor | | **R11** | Inductance Value | 110 nH (R = decimal point in $\mu$H) | | **X** | Termination | Silver-palladium-platinum-glass frit | | **J** | Tolerance | ±5% | | **R** | Packaging | 7″ machine-ready reel | | **Y** | Testing/Grade | Standard Grade | --- ### 2. Technical Specifications The 0603CS series is designed for signal processing and high-frequency filtering. | Parameter | Value | | :--- | :--- | | **Inductance** | 110 nH | | **Tolerance** | ±5% | | **Quality Factor (Q min)** | 52 @ 250 MHz | | **Self-Resonant Frequency (SRF)** | 1500 MHz (Typical) | | **DCR (DC Resistance) Max** | 0.650 Ohms | | **Irms (Maximum Current)** | 400 mA | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Key Features & Applications * **Ceramic Core:** Unlike ferrite cores, the ceramic core ensures no magnetic saturation, providing exceptional thermal stability and a high Self-Resonant Frequency (SRF). * **Wire-wound Construction:** This physical design allows for significantly higher Q-factors compared to multilayer inductors, which results in lower signal loss in RF circuits. #### Common Applications: 1. **Impedance Matching:** Used in the front-end of wireless transceivers to match antenna impedance. 2. **Filter Circuits:** High-pass, low-pass, and band-pass filters for Bluetooth, Wi-Fi, and LTE. 3. **Oscillators:** Stability in Voltage Controlled Oscillators (VCOs). --- ### 4. Footprint and Mounting The 0603 package is a standard Surface Mount Device (SMD). Below is the typical pad layout recommendation: ```markdown Dimensions (Approximate): - Length: 1.80 mm (max) - Width: 1.12 mm (max) - Height: 1.02 mm (max) ``` ---