The **CTC2F-R047K** is a specific electronic component belonging to the **Fixed Inductor** category, specifically a sub-miniature axial leaded inductor. These components are commonly used in RF (Radio Frequency) and signal processing circuits. ### 1. Part Number Breakdown The part number can be decoded to understand its specific electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **CTC2F** | Series Prefix | Sub-miniature axial leaded inductor series. | | **R047** | Inductance Value | **0.047 µH** (Microhenries). | | **K** | Tolerance | **±10%** variation from the nominal value. | --- ### 2. Technical Specifications Below are the typical technical parameters for this specific inductor model: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.047 µH | | **Tolerance** | ±10% | | **Core Material** | Phenolic (Non-magnetic) | | **DC Resistance (DCR)** | ~0.06 - 0.10 Ohms (Max) | | **Rated Current (Idc)** | ~1200 mA - 1500 mA | | **Self-Resonant Frequency (SRF)** | > 900 MHz | | **Package Type** | Axial Leaded (Through-hole) | --- ### 3. Key Physical Features * **Form Factor:** It looks similar to a small resistor but is typically coated in a green or blue epoxy resin. * **Construction:** It consists of a coil of wire wound around a phenolic core. Because the core is phenolic (essentially plastic/paper resin), it has low permeability, making it suitable for very high-frequency applications where iron cores would cause too much loss. * **Durability:** The epoxy coating provides moisture resistance and protects the fine windings from mechanical damage. --- ### 4. Common Applications Due to its low inductance and high resonant frequency, the CTC2F-R047K is typically used in: 1. **RF Oscillators:** Stable frequency generation in radio equipment. 2. **Impedance Matching:** Tuning circuits to ensure maximum power transfer between stages. 3. **High-Frequency Filtering:** Removing unwanted noise from high-speed data lines. 4. **Decoupling:** Preventing high-frequency interference from affecting power supplies. ---