The **CTC2F-R47M** is a specific type of electronic component known as a **Fixed Inductor** (specifically a Conformal Coated Axial Lead Inductor). It is commonly used in power supplies, filters, and RF circuits. ### 1. Technical Specifications The part number follows a standardized coding system. Here is the breakdown of its core parameters: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.47 µH (Microhenries) | | **Tolerance** | ±20% (indicated by the 'M' suffix) | | **Type** | Axial Leaded (Through-hole) | | **Coating** | Conformal Coated (Epoxy/Resin) | | **Core Material** | Ferrite or Phenolic (depending on specific manufacturer series) | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying equivalent parts: * **CTC2F**: The series identifier (usually refers to the physical size and the conformal coating style). * **R47**: The inductance value. The "R" acts as a decimal point. $0.47$. * **M**: The tolerance code. $M = \pm 20\%$, $K = \pm 10\%$, $J = \pm 5\%$. --- ### 3. Key Characteristics * **Form Factor:** It looks similar to a resistor (cylindrical with wire leads on both ends). This makes it easy to mount on standard Printed Circuit Boards (PCBs) using through-hole technology. * **Protection:** The conformal coating provides moisture resistance and insulation, protecting the copper windings inside from environmental factors. * **Applications:** * **Decoupling:** Filtering out high-frequency noise in power lines. * **RF Circuits:** Used in oscillators and signal processing. * **EMI Suppression:** Reducing electromagnetic interference in consumer electronics. --- ### 4. Typical Electrical Limits (Estimates) *Note: Exact values depend on the specific manufacturer (like Central Technologies), but typical values for a 0.47µH axial inductor are:* | Metric | Typical Range | | :--- | :--- | | **DC Resistance (DCR)** | ~0.06 - 0.15 Ohms | | **Rated Current (Max)** | ~800mA - 1200mA | | **Self-Resonant Frequency (SRF)** | > 300 MHz |