The **CW252016-R15J** is a high-frequency, wire-wound surface mount (SMD) chip inductor. It is commonly used in RF (Radio Frequency) circuits due to its high Q factor and stable performance at high frequencies. --- ### 1. Part Number Breakdown The nomenclature of this part (typically manufactured by Bourns or similar vendors) provides specific details about its construction and values: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **CW** | Series | Ceramic Wire-wound Inductor | | **252016** | Size (EIA) | 2.5mm x 2.0mm x 1.6mm (Metric 2520 / Imperial 1008) | | **R15** | Inductance | 0.15 µH (or 150 nH) | | **J** | Tolerance | ±5% | --- ### 2. Technical Specifications Below are the typical electrical characteristics for this specific component: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.15 µH (150 nH) | | **Tolerance** | ±5% | | **Quality Factor (Q)** | 25 to 30 (minimum) at 25.2 MHz | | **SRF (Self-Resonant Frequency)** | ~550 MHz | | **DCR (DC Resistance)** | ~0.70 Ohms (Maximum) | | **I rms (Rated Current)** | ~450 mA | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Key Features & Applications #### Features: - **Ceramic Core:** Provides excellent thermal stability and high SRF compared to ferrite cores. - **Wire-wound Construction:** Ensures a higher Q factor and lower DC resistance than multilayer inductors. - **Miniature Footprint:** The 1008 size is ideal for compact PCB designs. #### Common Applications: - **RF Communications:** Used in cellular phones, GPS receivers, and Wi-Fi modules. - **Impedance Matching:** Essential for antenna tuning circuits to maximize power transfer. - **Filtering:** High-frequency low-pass or band-pass filters. - **Oscillators:** Stability in VCO (Voltage Controlled Oscillator) circuits. --- ### 4. Schematic Representation In a circuit diagram, the part is represented by a standard inductor symbol: ```text L1 ---(uuuuu)--- 150 nH ``` ---