The **CTML0805F-R47K** is a surface-mount multilayer chip inductor. This specific part is commonly used in high-frequency circuits, power management, and noise filtering applications. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics of the component: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **CTML** | Series Type | Multi-Layer Ferrite Chip Inductor | | **0805** | Case Size | 0.08 x 0.05 inches (2.0 x 1.25 mm) | | **F** | Material Code | Ferrite material (Standard frequency range) | | **R47** | Inductance Value | 0.47 µH (Microhenries) | | **K** | Tolerance | ±10% | --- ### 2. Key Electrical Specifications Below are the typical technical parameters for this class of inductor: | Parameter | Value (Typical) | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±10% | | **Test Frequency** | 25 MHz | | **DC Resistance (DCR)** | ~0.35 Ω (Max) | | **Rated Current (Idc)** | ~200 - 300 mA | | **Operating Temp** | -55°C to +125°C | --- ### 3. Construction and Features The CTML series uses a **Multilayer Technology** which offers several advantages over traditional wire-wound inductors: * **Monolithic Structure:** The coils are printed on ferrite sheets and layered, resulting in a solid, magnetically shielded body. * **Magnetic Shielding:** Because the flux is contained within the ferrite body, it has very low electromagnetic interference (EMI) and can be placed close to other components. * **High Reliability:** No external wires to break; highly resistant to mechanical shock and vibration. * **Solderability:** Features nickel barrier terminations with tin plating for excellent solder heat resistance. --- ### 4. Common Applications This specific inductor (0.47µH in 0805 size) is typically found in: 1. **Mobile Electronics:** Smartphones and tablets for power supply decoupling. 2. **Filtering:** Reducing high-frequency noise in DC-to-DC converters. 3. **Signal Conditioning:** Used in RF circuits and local area networks (LANs). 4. **Computer Peripherals:** Motherboards, video cards, and hard drives. ---