The **CT1206CSF-R47M** is a high-frequency, surface-mount (SMD) wire-wound chip inductor. This component is commonly used in RF (Radio Frequency) circuits due to its high Q-factor and stable performance at high frequencies. --- ### 1. Part Number Breakdown Understanding the nomenclature helps in identifying the specific characteristics of the component: | Segment | Meaning | Specification | | :--- | :--- | :--- | | **CT** | Series Prefix | Central Technologies Chip Inductor | | **1206** | Case Size | 3.2mm x 1.6mm (Imperial 1206) | | **CSF** | Construction | Ceramic Core / Standard Force | | **R47** | Inductance Value | 0.47 µH (470 nH) | | **M** | Tolerance | ±20% | --- ### 2. Technical Specifications Below are the typical electrical and physical parameters for this specific part: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.47 µH (470 nH) | | **Tolerance** | ±20% | | **Test Frequency** | 25 MHz | | **Self-Resonant Frequency (SRF)** | ~375 MHz (Min) | | **DC Resistance (DCR)** | ~0.95 Ω (Max) | | **Rated Current (Idc)** | ~450 mA | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Key Features & Construction * **Wire-Wound Design:** Unlike multilayer inductors, the wire-wound construction allows for much higher **Q (Quality) factors** and higher current handling capabilities. * **Ceramic Core:** Provides excellent thermal stability and very high SRF (Self-Resonant Frequency), making it ideal for high-frequency filtering. * **1206 Footprint:** A standard size that is easy to handle for both automated pick-and-place machines and manual prototyping. --- ### 4. Common Applications * **RF Tuning:** Used in resonant circuits for oscillators and filters. * **Impedance Matching:** Essential for antenna matching circuits in wireless communication devices. * **Signal Conditioning:** Decoupling and EMI filtering in high-speed data lines. * **Wireless Devices:** Found in Wi-Fi modules, Bluetooth transceivers, and GPS receivers. ---