The **CTML1206F-R68K** is a surface-mount (SMD) multilayer chip inductor. It is designed for high-frequency filtering and power decoupling in compact electronic circuits. --- ### 1. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.68 µH (Microhenries) | | **Tolerance** | ±10% (Indicated by 'K') | | **Case Size** | 1206 (Metric: 3216) | | **Material** | Ferrite Core | | **Test Frequency** | 25 MHz | | **DC Resistance (DCR)** | ~0.45 Ω (Max) | | **Rated Current** | ~200 mA | | **Self-Resonant Frequency** | ~110 MHz | --- ### 2. Breakdown of the Part Number Understanding the nomenclature helps identify the physical and electrical characteristics: * **CTML**: Series prefix (Chip Inductor, Multilayer). * **1206**: Physical dimensions (0.12 x 0.06 inches or 3.2 x 1.6 mm). * **F**: Lead-free / RoHS Compliant. * **R68**: Nominal inductance value. The "R" acts as a decimal point (0.68 µH). * **K**: Tolerance code (K = ±10%). --- ### 3. Key Features and Construction * **Multilayer Technology:** Unlike wire-wound inductors, these are built by layering ferrite paste and conductive electrode paste. This results in a monolithic structure that is highly reliable. * **Magnetic Shielding:** The closed magnetic circuit design minimizes EMI (Electromagnetic Interference) and prevents crosstalk with neighboring components. * **Excellent Solderability:** Usually features nickel barrier terminations with a tin overplate, making it suitable for wave or reflow soldering. --- ### 4. Common Applications Inductors like the CTML1206F-R68K are typically found in the following scenarios: 1. **EMI Suppression:** Used in signal lines to filter out high-frequency noise. 2. **Power Supply Decoupling:** Placed near IC power pins to smooth out voltage ripples. 3. **Mobile Electronics:** Ideal for smartphones, tablets, and portable devices due to the small 1206 footprint. 4. **Resonant Circuits:** Used in oscillators and timing circuits where a specific inductance value is required. ---